$1 shipping when combined. The CEM3340 was responsible for the main VCO used in quite a few classic synths Electrosmith 3340 VCO - Iconic-sounding chip in a compact module. If you’ve used a sprung breadboard before, you should be right at home, as the layout is basically the same. Things like soft / hard sync and FM modulation. Smaller, they have the Kareishuu VCO which I think is a really nicely featured, good sounding VCO for the size. . Apr 5, 2024 · I’ve been trying to follow and replicate Sam’s CEM3340 Basic VCO and despite following the layout almost identically, I’m not getting any sound… Instead of a nice, clean sawtooth or triangle wave, I get clicks every couple of seconds. Arduino Wavetable Voltage Controlled Oscillator Oct 21, 2021 · I know this might be somewhat of a dumb question, but is it possible to add a rotary switch to LMNC’s cem3340 vco like he has on 1222 performance oscillator? I already looked at the schematics and understand that they are very different, for example in his 1222 design, there is the reference trim pot that is connected to the rotary pot. There are other VCO designs that don’t use ICs that cost that much, though they’re either much more complicated circuits or much less capable. And now there's also a Sinewave output. CEMosc has at it’s heart a CEM3340 or AS3340. $100. CEM3340 or AS3340? So the original CEM3340 is the bee’s knees, however there is a cheaper clone called the AS3340 and i gotta say, i can’t tell the damn difference! links to bother :-CEM3340. Experimentalists anonymous diy archives VCO is an analog voltage controlled oscillator based on the reissue of the legendary Curtis CEM3340 IC. This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. That is the new chip. Nov 27, 2021 · And offsets so the outputs are centered on zero would be good too. These are CEM3340 VCO modules that are optimized for performance, having big spaced Whether you don't yet have a 3340 VCO, or you need a second (or third), this Timo VCO is an effective/stable workhorse module that doesn't need a ton of rack real-estate. 47K subscribers in the synthdiy community. Brand New. CEM3340 VCO – Division 6. It uses the famous CEM3340 "Curtis Oscillator“ precision VCO chip, that is also being used in fabled synths like the Sequential Pro-1 and OB-xa. Just like the beloved CEM3340, the AS3340 and AS3345 are completely self contained, precision voltage controlled oscillators, featuring both exponential and linear control scales and up to four buffered output waveforms: triangle, sawtooth, square, and pulse with voltage controllable pulse width. "Dear all, I've been speaking with onchip for the last 3 months and they have already produced a new batch of CEM 3340. Featuring the legendary CEM3340 IC, the 3340 Voltage-Controlled Oscillator module offers that classic, rich analog sound found in many famous synthesizers from the past, along with a wide range of sound shaping and modulation possibilities. Assembled modules are built to order. Couldn’t figure out what the hell was wrong with it, so i just built it again. It is a much better design and it will give you the correct control over Pulse Width. com ) In this first demo video, we illustrate just how accurate our CEM3340 VCO design is. The core of the VCO circuit is built on an N8 Eurorack breadboard. Other manufacturers manufactured copies of the Curtis Chips as well since the patents had expired. Featuring an OnChip CEM3340 re-issue at the core of the design, surrounded by nine 20mm slide pot controls. Cem3340 vco now available – division 6 Vco easyeda Cem3340 vco – division 6. I suggest you take a look at my other 3340 VCO design (the 'Really Good AS3340 VCO") project 18 on this website. By a bizarrecoincidence, I shall be able to answer this for certain tomorrow as I have a working CEM VCO and a not-quite-working AS3340 VCO so I was going to test by swapping the IC's over. Very recommend for repair vintage instruments to ensure the original behaviour and performance with the rest of original chips. I offer it here also in case people are interested. By integrating a complete analog VCO on a chip, it made more compact and cost-effective synth designs possible. I will also share with you gerber files to have both printed circuit board and panel board manufactured by professionals at low cost. G, and cloned/compatible devices are available from CoolAudio (v3340) and from the Latvian company Alfa (AS3340). Beni di alta qualità cem3340 cem 3340 vco ic-completamente testatoDivision 6 cem3340 vco 3340 vco – electrosmith submodule build – knopsl modularCem 3340 タイプの vco その2. " And via johnny83 on the Muff Wiggler Forum including contact info, price, and availability. Can be used as a standalone board, put in an enclosure, or mounted behind a modular synthesizer panel (a Eurorack-f Troubleshooting LMNC’s CEM3340 VCO Hey guys, So I’ve just finished building three of LMNC’s CEM3340 VCOs and so far all of them work fine except for the square wave outputs, which output at very low volume most of the time. The answer to my DIY VCO prayers. For enterprises, more professional users May 18, 2022 · This module is based on the classic CEM3340 VCO chip, although I’m using a AS3340 clone. On this page is a description of the design by Thomas Henry, illustrated with plenty of waveform illustrations taken from his oscilloscope. The circuit was featured in 2019/Issue 3 of Nuts & Volts magazine. Download. This is a short description of the sounds you can expect from a CEM3340 VCO build. This is a pair of Division 6 CEM3340 VCO's lovingly built by me from the factory kits. The sound of the Rev G version is exactly the same as the early CEM3340 batches, as you can see in this comparison: (search for 'New vs. 3340 vco schematic for pcb design. Thonk. CEM3340 VCO BOM Page 1/2 0. Jul 31, 2022 · He also has an interesting article about historic designs using the CEM3340. Nov 7, 2019 · Hi Mikel. 00 $ 100. Firstly it doesn’t require a temperature coefficient resistor. To make building and using the circuit convenient, we are offering boards and full kits in… Jun 1, 2019 · 何事もかたちから入るのが大事、ということでなんか有名っぽいICの型番を覚えた。使い方はまったくわからないけど。 CEM3340 VCO用のIC。2hp VCOとかMalekko Mantherで使われてて知った。これはセカンドソース品ではなく、リイシュー版が出回っている。 This design does not use the built in CEM3340 pulse generator. Spirit: 2x CEM3340 VCO, 2x CEM3350 Dual VCF, 3x CEM3360 Dual VCA Bit ONE: 6x SSM2044 VCF Early Models, 6x CEM3328 VCF Late Models Bit 01: 6x CEM3328 VCF Bit 99: 6x CEM3328 VCF. Aug 16, 2018 · This is the minimally modified example schematic from the first page of the datasheet, with SMD parts, except for the high quality 1000 pF through-hole Mica capacitor, as recommended in the datasheet, and the 2 trimmers. They are available for $15 each! Top . He has a CEM3340 VCO with every little function available and lots of knobs. DIY 1. This VCO is based on the Aries AR-338 PMS VCO, which features phase modulated sync and a pan-pulse output. Aug 4, 2019 · 3340 VCO (PCB and Front Panel Only for DIY) New 2 color front panel design. The 3340 is a design from the seventies, the ssi2130 was designed in 2018 or so, it has really excellent stability and tracking, over 11 octaves, and a built in 5 input vca mixer, together with through zero FM and through zero phase modulation which unique in vco ic's Division 6 CEM3340 VCO Main Board Oscillator. G) architecture for a rich, analog sound. The power rails they chose likely had more to do with the rest of the synths design than trying to coax character from the VCO (in the 80s, they were trying to make VCOs are characterless as possible!). (however, I'm sure after shipping they will need some retuning- easily done following the video available on the Division 6 website) This module is based on the classic CEM3340 VCO chip, although I’m using a AS3340 clone. G Analog VCO with three waveforms (Ramp, Triangle, Square/Pulse) There hasn’t been a better design than the 3340. Miasma's dual VCO could bring a familiar sound to your rack. Check Details. Curtis CEM3340 IC – Reissued VCO Chip – Thonk – DIY Synthesizer Kits There hasn’t been a better design than the 3340. With the recent re-issues of the classic CEM Hi, I'd like to do a POC for designing a patch storage memory to read and write to an oscillator. All you need externally is just a +/-15 V power supply (+/-12 V of an Eurorack module power supply works as well) and a potentiometer for the voltage controlled input to Division 6's compact CEM3340 VCO is an analog oscillator with an assertive sound. The Pulse Width input of the chip on pin 5 needs to vary between 0V and +5V to get the correct Pulse Width control. If you need a quick overview of the design and features of the N8 Eurorack breadboard, this guide provides a diagram of the layout and connections. Jun 28, 2024 · Cem3340 cem 3340 vco ic 3340 vco schematic for pcb design Cem 3340 vco integrated circuit diagram. Locally (in Finland) there was some interest in the design, so I decided to make a second revision and do a small run of boards. Jun 28, 2023 · In 2016, it was announced that the CEM3340 VCO had been remanufactured by OnChip using the original design, the CEM3340 RevG. Description: Voltage Controlled Oscillator. CEM3340 VCO – Division 6 I'm working on a VCO design using the AS3340 IC, a clone of the famous CEM3340. Mar 26, 2020 · Hi, I’m a beginner at DIY electronics so my question is probably pretty stupid. Cem3340 vcoCem 3340, tube cem3340; röhre cem 3340 id46756, ic Voltage controlled oscillator circuitIntegrated circuit. It has basic waveforms and 3 simultaneous sync options. May 24, 2020 · Anyway, yes, you do need a CEM3340 or the cheaper clone for this design, no way around that. Jan 5, 2024 · Cem3340 vco – division 6. With the recent re-issues of the classic CEM Jul 30, 2021 · Dual Voltage-Controlled Oscillator (VCO) with CEM3340 Architecture. Each VCO features a vast range of modulation capabilities, including hard sync, PWM, 1V/octave and exponential/linear FM. If you’re looking for a stripboard CEM3340 VCO design this is probably for you. After making a feature list I realised that most of them where covered by Kassutronics design and the collection of 3340 designs on Electric Druid, Eddy Jul 8, 2016 · The above video, via Gregory Cox, captures a comparison of new vs old CES 3340 VCO chips, running in a Oberheim OB-8 synthesizer. Alas, in the following years everything went digital and the CEM chips went out of production. Jul 28, 2021 · Yeah, I have P6 too, played P5 in store and satisfy with its discrete VCO voices (not sure it is CEM3340 or SSI2130 based though, I think it is CEM3340). Notes on the CEM3372 VCF. A nice stable analog VCO with good tracking. Buy It Now. Curtis' own company OnChip Systems re-issued the CEM3340 Rev. Is AS3340 the same including sound etc. Cosmic Instruments 10HP voltage controlled oscillator Eurorack module based on the famous CEM3340/AS3340 chip 3340 VCO Eurorack - Fully Assembled Cosmic Division 6 CEM3340 VCO This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. I've built up the test circuit on a proto board, and it only oscillates at super high, almost inaudible frequencies unless I place my finger between the -15v and ground rail. This is not a reissue or clone, this the original IC. File Size: 3MbKbytes. And, crucially, it had full temperature compensation making it very stable. CEM 3340のデータシート: 直リンしていいのかわからなかったのでリンクしないけど、Curtis CEM3340 IC – Reissued VCO Chip – Thonk – DIY Synthesizer Kits & Componentsにある。 Stripboard CEM3340 VCO. If building Sam’s VCO, I recommend sticking with the CEM3340. The chip tests good outside of this circuit. DIY 3340 VCO (Voltage Controlled Oscillator) (PCB, Front Panel and AS3340) This is a basic circuit design from CEM3340 datasheet. The datasheet can be found here. It has also been cloned by CoolAudio as the V3340 and by Alfa as the AS3340. The Kassutronics VCO 3340 is designed to be a good balance between feature set and simplicity. Electric Druid. I have finally finished the circuit for my CEM3340 VCO! I received the PCBs this morning and spent my day off from work soldering and testing! Inputs: 1V/oct CV Exponential FM Linear FM PWM Sync (with a switch for HARD/SOFT) Outputs: Sawtooth Triangle Sine PWM (with on-board or external control) The AS Alfa 3340 VCO chip is Alfa’s modern version of the famous CEM3340 voltage-controlled oscillator. You can see the post for the breadboard CEM3320 VCF This is the CORE of a VCO module made with a CEM3340 chip. Featuring an OnChip CEM3340 re-issue at the coreof the design, surrounded by nine 20mm slide pot controls. We thought you'd like these too… 9V Power Converter Adapter for guitar pedals, MIDI For SaleCEM3340 VCO Chip – Brand New - Voltage Controlled Oscillator ChipFactory tested and certified. Mar 25, 2019 · "CEM3340 based single VCO, precision analog, high quality, with HS+/-, SS1/2, LIN/EXP FM, and 5 independent waveform outputs : sine, triangle, ramp, square / PWM, sub. This simple design is similar to the filter circuit on the Sequential Circuits Prophet 1 synthesizer. It's a self-tuning CEM3340 VCO with wave mixer. Just the phase modulated sync and pan-pulse sections are based on the Aries 338 PMS VCO, which uses a SSM2030. Can be used as a standalone board, put in an enclosure, or mounted behind a modular synthesizer panel (a Eurorack-format panel is available from Self-Tuning Eurorack VCO by DUSKWORK. Although more compact, each VCO features a vast range of modulation capabilities, including hard sync, PWM, 1V/octave and exponential/linear FM. It was widely used in the 80s by many synth manufact CEM3340 VCO Rev. The Electrosmith 3340 VCO is an all analog, voltage controlled waveform generator that uses a reissue of the legendary Curtis CEM3340 IC. I've been looking at more complete designs with Sync and FM from ElectricDruid, N8Synth, Division 6, Skull and Circuits and then found someone has done a compact LMNC design using TL074, link below, so I have decided to start here. I'd really like to add a VCA and VCO next to really get this going, but I'm having trouble finding schematics for +/- 12V VCAs and +/- 12V VCOs based on the CEM3340. I’ve took some inspiration from the Maximus VCO design from Thomas Henry. Feb 27, 2024 · Cem3340 cem 3340 vco ic Op amp voltage controlled oscillator 3340 vco schematic for pcb design. The CEM3340 outputs 3 waveforms with different output levels. The CEM3340 VCO chip is one of the legendary chips designed by Doug Curtis that played an important role in the analog polysynths. I used the che 2. Feb 13, 2020 · Hey yall, I got some time today to take a look at my old VCO build. I’m planning on building LMNC’s CEM3340 VCO design and understand most of it apart from a couple of things. Jun 6, 2018 · The CEM3340 VCO chip is one of the legendary chips designed by Doug Curtis that played an important role in the analog polysynths of the 1980s. Stay tuned for more on this important breaking story. - Euro format (10HP), circuit and panel PCBs, no wiring. This layout has been made using the schematic of the Thomas Henry CEM3340 Deluxe VCO, which has a sinewave output. Page: 6 Pages. Things you'll need: -CEM3340 VCO module (of course!) -Power supply -Oscilloscope or tuner or som Original Vintage CEM3340 VCO IC. CEM3340 VCO Now Available – Division 6. G. The CEM3340 pitch tracking might become the standard by which you track your other oscillators. Smooth support for design sizes of over 5,000 devices or 10,000 pads 3. Any of these chips will work correctly in the designs above. Polarity doesn’t Apr 25, 2020 · Schematic_CEM3340_VCO_V3_2020-04-24_19-20-26 1169×827 45 I am waiting for my first two orders to turn up to verify quality and my design before I order the VCO. 3340 VCO (Eurorack Voltage Controlled Oscillator) This is a basic circuit design from CEM3340 datasheet. $6 delivery Jun 10 - 11 . Kassutronics VCO 3340 (Wood Panel) - kassutronics vco 3340Wood Panel VersionPicture reflects prototype pa This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. This 3340 Dual Voltage-Controlled Oscillator (VCO) has a smaller footprint per VCO than our standard 3340 VCO module; making it suitable for cases where space is more limited, or where you want to maximise functionality per HP. Can be used as a standalone board, put in an enclosure, or mounted behind a modular synthesizer panel (a Eurorack-format panel is available from us, or create your own). This 3340 Dual Voltage-Controlled Oscillator has a smaller footprint per VCO than our standard 3340 VCO module; making it suitable for cases where space is more limited, or where you want to maximise functionality per HP. I intend to design add-ons (hence the large amount of spare space on the stripboard layout!) CEM3340 Rev G VCO Integrated Circuit. To achieve a uniform 10 vpp output around 0 volt, I used a series of op-amps. We have all three chips available in the shop. Hi all - selling this Timo Rozendal CEM3340 VCO module. Therefor, certain synthesizers require certain changes to use them, as noted back in the 80's! These drop into most synthesizers in our How to tune / calibrate the CEM3340 VCO from Division 6. Aug 4, 2020 · An interesting design choice is that it doesn't seem to use the PWM/Square wave from the CEM3340, but waveshapes them from other signals. 100% compatible with older CEM3340 chips. If you look at the stripboard layout on his website, he says to connect to the SAW/TRIANGLE OUT/CV IN wires to the ‘tip’ of the corresponding jack. The 3340 is the oscillator ·CEM3340 VCO Kit · Soldering Iron · Solder · Wire Cutters · 9mm Socket · 10mm Socket 2 Install Resistors Working one value at a time, prep the leads of the resistors like you did with the diodes. NET (a massive thank you to every one on this sub-reddit that helped me to learn the skills I needed to successfully design & build a proper module! Timo Rozendal's 8hp Eurorack module based on the Curtis CEM3340 VCO. Apr 21, 2021 · After a week or so surfing around on the internet and trying to figure out where I could find all the components I finally decided to take the easy route and go for a AS3340 based VCO design. It is well known as a very good-sounding voltage-controlled filter. 100% recommend NLC for DIY, but they do require you to be able to do SMD. The AR-338 used a SSM2030, so it was not too hard to modify the sub-sections to suit the CEM3340. The powerful oscillator, whose core is a discrete Curtis IC CEM3340 chip, delivers sawtooth, triangle and square with pulse width modulation. Watch. The final decision was to use the CEM3340 chip which has recently been put back into circulation with the CEM3340 revision G A quick history lesson of this chip shows it was a fundamental building block IC created by Doug Curtis in the late seventies and utilized in so many popular synths; Roland Jupiter 8, Sequential Prophet 5 (later revisions Listing is for ONE new chip CEM3340 Rev G reissued by the former Curtis Electromusic, compatible with old CEM3340s. To my utter delight and amazement, Curtis Electromusic, which morphed into OnChip Systems, has re-issued the venerable CEM3340. Aug 9, 2020 · The square wave is generated by running the sawtooth through an internal voltage divider and comparing it to the control voltage, which gives you an effective range of just over 0 V to just under 4 V (supply/3). So it was my first and last SMD DIY module. CEM3340 VCO copy - EasyEDA open source hardware lab. But then we’re entering the realm of improving the circuit and there’s a good deal more of that possible: 1222 Tuner VCO Module fixes/improvements focuses on the 1222 module but most of it is applicable to stripboard versions too. Hi, I've breadboarded the Look Mum No Computer CEM3340 oscillator design using Electricdruid_v3340 and want to do a stripboard prototype now. Dec 17, 2017 · Has anyone succeeded building this yet? I went with 12V BOM revisions as stated in Fonik's build doc, using the TL431 and I have a dead VCO. Panel Template CEM3340 VCO. It is a premium polyphonic oscillator bank, comprising eight CEM3340 (Rev. Timo Rozendal's 8hp Eurorack module based on the Curtis CEM3340 VCO. When I do that, the pitch shoots down and everything works more or less normal. When Thomas Henry contacted me from his fortress in the frozen north, asking if I was interested in testing a new design using the CEM3340, I was more than on-board. The SH-101 circuit is pretty vanilla as 3340 implementations go, and doesn’t really sound any different than any other vanilla 3340 circuit. Four simultaneous, buffered 10Vpp (±5V) waveforms including DC-coupled ramp Saved searches Use saved searches to filter your results more quickly CEM3340 VCO Main Board - Fully Built Oscillator Circuit. - Hard and soft sync. Price $100 + $5 Shipping. Aug 1, 2015 · The Digisound-80 VCO and VCLFO modules are fantastic (I've got 5 of them in my Digisound) - excellent stability, linear and exponential FM, and soft sync, plus positive and negative hard sync, as well as both bipolar and unipolar waveforms, and PWM of course. Other Instructables in this serie: 4 Channels Mixer. 00. - Exp and linear (DC coupled) frequency inputs. The AS3340 is Alfa’s fantastic clone of the famous CEM3340 voltage-controlled oscillator. It produces +-10vpp sine, triangle, ramp and modulateable pulse waveforms that track 1v/oct over a wide (6+ octave) range. The excellent super stable and versatile CEM3340 voltage controlled oscillator, originally d I'm building a bunch of simple VCO's and wanted to use CEM3340 but can't find a seller. It provides Ramp, Pulse/Square, and Triangle outputs,has inputs for oscillator sync, is temperature compensated and stable, and provides excellent 1V/Oct tracking. Price: TBD Availability: Stay tuned via VSL social media (IG, YT, FB or vintagesynthlab. The first design I had posted here was a bit sketchy so I now present a new layout here. Insert the resistors into their proper locations (see BOM). Build it from a kit! This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. The CEM3340 is putting out no waveshapes (powered from either the TL431 or the +12V rail). HONEYEATER is a classic analog VCO with two sub-oscillators and mixable waveforms. In recent years, clones and equivalents of the original CEM3340 have been produced, including the AS3340 from Alfa Rpar AS, and both the original and clones are once again widely available. Great care was taken to keep the 101-VCO fully analog circuit as close to the original as possible. But as it is typical 3340 design, it needs many mods to be good for me and SMD design is for no-modding users rather. Features Original CEM3340 (Rev. The self-tuning idea was inspired by Look Mum No Computers VCO with a tuner module. Easy to build, easy to tune and all the extra's like Synchronization, Frequency Modulation and PWM. Manufacturer: Curtis Electromusic. Not sure if that's for quality/calibration reasons or just a side-effect of designing it to have a common "shape" control over multiple outputs. Thomas' write-up, which we will get to shortly, will guide you through the design complete with images of the waveforms the VCO Maximus produces. No problem with SMD soldering, I have done it with soldering tip 0. We offer also AS 3310 - 3320 - 3360 The CEM3340 VCO chip is one of the legendary chips designed by Doug Curtis that played an important role in the analogue polysynths of the 1980s. Digisound-80 modular. They have been carefully calibrated and tuned and track together fairly well. Synthrotek. Cem3340 vco now available – division 6Sound semiconductor intros ssi2131 vco integrated circuit – synthtopia . It doesn't sound very far from P5 with vintage mode on. This attempts to compensate for the pitch change with temperature that occurs with VCOs. Fabricated using the original Doug Curtis design information. Inspired by Look Mum No Computer's DIY strip board layout. Please note that Alfa recommend a 51K resistor on the pulse output in place of the 10K resistor that the CEM3340 used. Here’s what Cox has to say about the video: This video is a demonstration of the newly manufactured Curtis Electromusic CEM3340 oscillator IC. A subreddit for practical questions about component-level electronic circuits: design, repair, component buying, test gear and tools. The CEM3340 or its AS3340 equivalent has two main advantages over many other VCO designs. For plus it was cheap PCB+panel set, for minus - I am not a fan of PCB front panels. Old Curtis CEM3340 Rev G Comparison' at May 2, 2018 · I recently designed a basic VCO around the AS3340, which is a clone of the CEM3340 VCO chip. SOP-16 package. CEM3340 VCO Documentation. I've built it. All of th Part #: CEM3340. Division 6 CEM3340 VCO Eurorack Module. Description/Usage 18hp Has phase modulated sync & pan-pulse output based on the Aries PMS-338 VCO. It's big, but cool. Instead, an typical opamp circuit is used for the Pulse wave output. The boards are available fully-assembled or in kit format. The Poly-8 VCO module is one of a kind. It was widely used in the 80s by many synth manufacturers such as Roland and Oberheim. I'm designing a little FM carrier circuit that modulates a CEM3340 carrier with an external signal, but it's not clear to me how to tailor the input level and bias circuitry at the VCO's linear FM input. I have looked at some different articles and some say it's as simple as reading a potentiometer, to save the signal to patch storage then load the signal to write and send out the CV to a potentiometer where a sample and hold is needed to hold the signal. 80-2 VCO: CEM3340 VCO 80-3 VC LFO: CEM3340 VCO 80-4 VC Mixer: 3x CEM3330 dual VCAs 80-6 VCF: CEM3320 VCF 80-7 VC State Variable Filter: SSM2040 VCF 8-Channel Polyphonic VCO Bank with CEM3340 Architecture. A couple of comments on Sam’s design: First, the ‘square’ output of Sam’s design is more accurately described as a pulse output, as the pulse width is of course variable. Jun 4, 2016 · Curtis Electromusic currently offers the sought after CEM3340 VCO, a rework of the original design. Simultaneous outputs of sine, triangle, sawtooth, and square waves are available along with linear/e Great care was taken to keep the 101-VCO fully analog circuit asclose to the original as possible. It's almost as basic as the CEM3340 schematics can get with a few little extras I've come up with. 4 mm. Listed:over a month ago Sep 21, 2019 · Since Coolaudio started reissuing old IC’s used in various synths I always eyed the V3340, which is a reissue of the CEM3340 chip as used in many classic synths such as the Roland SH101, Prophet 5, Memory Moog and plenty of others. More rigorous design constraints, more standardized processes 4. The V3340 chip is CoolAudio’s modern clone of the famous CEM3340 voltage-controlled oscillator. As you can see, for such a feature rich VCO, there are not all that many components. I first built the circuit on a breadboard. Description. Oscillator Module PCB Voltage Controlled Frequency Source Broadband. Hello everyone! I am in the works of building myself a DIY eurorack modular synth. I would say that is unnecessary. Incidentally, this is the same chip that was used in some Roland classics (e. The Electrosmith 3340 VCO employs a reissue of the iconic Curtis CEM3340 IC, used in legendary synths such as the Prophet, SH-101, Jupiter-6 and a whole lot more. This is the ONLY authorized remake of the original trademarked by CEM. Jan 14, 2020 · Synthesizer Build part-18: A REALLY GOOD AS3340 VCO DESIGN!! This is the Digisound-80 VCO. Compared to other CEM3340 VCOs this module was especially made for live usage, with Coarse a Apr 6, 2024 · Cem-1 94v0 Pcb Schematic Design Services Circuit Board - Buy Pcb Design. Many believe this chip to be the greatest sounding analog oscillator of all time. 1μF Ceramic C2, C6, C7 x1 C5 1nF Poly Film x3 CAPACITORS 1N4148 D1, D2 x2 DIODES 4148 104 102-or- 104 10nF Ceramic C3, C4 x2 103 -or- 103 1nF Ceramic C1 x1-or- 102 B20K R1, R2 (Control Board) x2 POTENTIOMETERS 1000 3. Nov 3, 2016 · basicbasic wrote:The CEM VCO from nonlinearcircuits is based on the Digisound design AFAIK. In this guide, we’ll build a Eurorack 3340 VCO module using N8 Synth’s 10HP Eurorack prototype boards. All of these inputs are The VCO Maximus is a CEM3340 based VCO Module. CEM3340 VCO Schematics and PCB! : synthdiy. It was widely used in the 80s by many synth manufacturers such as Mar 1, 2024 · CEM3340 Voltage Controlled Oscillator (VCO): The CEM3340 VCO is probably the best-known of Curtis’ chips. I dont really have the capacity to check that this works right as is The Curtis CEM3340 VCO has been reissued by Curtis Electromusic. G) VCOs in a clean, compact and ergonomic design. 00. The CEM3340 VCO chip has been re-released as the Rev. This is to avoid the influence of PWM on the frequency of the oscillator, which has been reported to be a problem, especially with the AS3340 versions of the chip. 5mm Jack x7 CONNECTORS J1-J7 (Control Board) Header RA 12P x1 P1 10P Box Header x1 P2 10K Trimmer x1 May 13, 2023 · Voltage controlled oscillator circuit using lm566 vco ic Cem3340 vco schematics and pcb! : synthdiy Cem-1 94v0 pcb schematic design services circuit board. To go along with my stripboard CEM3340 VCO I needed a stripboard CEM3320 VCF. Note the Rev G in the image. Good info on implementation of the CEM3340 can be found here :-Electric Druid CEM3340 Page The Coolaudio V3340M IC (CEM3340 clone) is a high precision Voltage Controlled Oscillator, featuring both exponential and linear control scales plus up to 4 buffered output waveforms: triangle, sawtooth, square, and pulse with voltage controllable pulse width. Still, if cost is the driving issue, that’s probably the way to go for now. Easy to build and calibrate too. They are available for $15 each! Jul 28, 2021 · Yeah, I have P6 too, played P5 in store and satisfy with its discrete VCO voices (not sure it is CEM3340 or SSI2130 based though, I think it is CEM3340). Rather than just be boring, i also attempted to add the other features that were not included in the original stripboard design. Visual Bill of Materials; Bill of Materials; Assembly Instructions; Schematic; Calibration Video; Back to Main Product Page May 4, 2020 · @casiokid @twinturbo, I would recommend: adding a 1k protection resistor in series with the buffer outputs (and connecting the outputs to the tip, @twinturbo you’ve got one connected to the sleeve) adding a negative offset to the outputs so that they swing positive and negative (the outputs of the 3340 only go above ground) adjusting the output buffer gains so that the output signals have Division 6 CEM3340 VCO Eurorack Module This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. You can source your own chip, of buy AS3340 direct fr Finished up my implementation of a CEM3340 VCO. $140. Nov 11, 2020 · After I had finished the VCO I wanted to add a Sinewave option to it. The story behind the CEM3340 and the VCO Maximus, discussion of the controls, and a video of the VCO Maximus in action can be found on this page. - Circuit and panel PCBs both single sided for ease of DIY. CEM3340 VCO - EasyEDA. SH-101). Designed by Synthrotek in United States of America There hasn’t been a better design than the 3340. This is a basic circuit design from CEM3340 datasheet. However, the OP wants a VCO with an authentic CEM3340 chip. Any question write meEvery chip is tested before dispatch, to ensure working Juergen Haible Dual VCO - 2 x CEM3340; Kijimi - 16 x AS3340, 24 x CEM3360; MIDIbox 3396 – CEM3396; PAiA 6750 Hyperflange & Chorus, 1 x CEM3340; PAiA Proteus 1 – 1 x CEM3310, 1 x CEM3320, 1 x CEM3330, 2 x CEM3340; PAIA EKx-40 VCO - 1 x CEM3340; Powertran Transcendent polysynth - per voice: 2 x CEM3310, 2 x CEM3340; Thomas Henry Deluxe VCO Great care was taken to keep the 101-VCO fully analog circuit as close to the original as possible. Thomas Henry Rides Again. Equipped with linear and exponential FM, and hard and soft sync, it has a really wide tonal palette. I'm building three of LOOK MUM NO COMPUTER's DIY Synth oscillator modules. To clear up a common misconception, the Rev G 3340 has existed since the 1980's. It also allowed for hard and soft frequency synchronization. Testing the pulse, saw, sine and triangle outputs plus PWM and oscillator sync for the new CEM3340 VCO design This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. building, modifying and repairing synthesizers Feb 7, 2018 · One of the first modules to feature the CEM3340 VCO chip that famously produced the sound of the SH-101, Prophet 5 and other classic synths. or is it worth buying… frequency central cem3340 VCO, full kit euro 10hpVersion 2CEMosc is a stable AS3340 based VCO which tracks beautifully, and is feature rich. Arduino controlled CEM3340 The legendary VCO Oscillator chip from the Roland SH-101 and MC-202, MemoryMoog, Sequential Prophet 5 and Pro-One, Digisound Modular, PAiA Proteus, Crumar Spirit, Oberheim OB-8, OB-Xa and OB-SX and many more! These are BRAND NEW chips, this is the real thing as manufactured by Curtis Electromusic with the full blessing of the late Doug Curtis In this Instructables I will show you how to assemble a full oscillator module based on AS3340 (CEM3340 clone). The IC provides Ramp, Pulse/Square, and Triangle outputs, has inputs for hard and soft sync, is temperature compensated and stable, and provides excellent 1V/Oct tracking. VCO features simultaneous triangle, sawtooth, and square wave outputs with linear FM, hard sync, and PWM capabili Aug 19, 2015 · - CEM 3340 based VCO, essentially the reference design. They will be ready to ship within 1 week of ordering, usually I manage it in 1-2 days. Aug 18, 2024 · The VCO-555 by Thomas Henry an approximation of the CEM3340; CEM3340/3345 data sheet; Picture of de-encapsulated defect CEM3340 at Stromeko Synth World; Dual VCO (CEM3340-based, with through-zero FM and various types of sync) by Juergen Haible; Things to come: CEM3340 VCO, nonlinearcircuits, 17 August 2016 The design is a wonderful, versatile, and musical creation made possible by a combination of the genius of Thomas Henry and Doug Curtis' CEM3340. Coolaudio clone of the CEM3340 VCO. There seem to be some subtle differences between the Alfa chips and CEM originals, particularly with respect to pulse width. Powering the 3340 vco (was cem 3340 vco help!) Jun 3, 2016 · Curtis Electromusic currently offers the sought after CEM3340 VCO, a rework of the original design. Oct 19, 2020 · とりあえず触ってみた時に読んだサイトのメモ。V3340、AS3340も同じはず。 参考にしたサイト. - Designed for +/- 15V, may run at +/- 12 with some adjustment. Apr 24, 2020 · Our CEM3340 VCO is a straight-forward, easy-to-build implementation of the CEM3340 voltage-controlled oscillator IC by Curtis Electromusic. Now updated to the 3340a. AS3340. Build guide / BOM (pdf) 2. The CEM3340 based architecture is revered for its classic sound, making the Electro-Smith 3340 perfect for sound design applications. It featured triangle, sawtooth, square and pulse waveforms with voltage-controllable pulse width. Thomas Henry’s VCO MAXIMUS (Eurorack DIY) Introduction Back in 1987 Thomas Henry published the CEM3340 based Deluxe VCO in his book Build A Better Music Synthesizer. Currently the design takes a line-level input, scaling it through a 3360 VCA, then through an op-amp for final scaling. g. EDIT: Doh! that one is based on an Aries design. Add to Cart. Vco easyeda Nonlinearcircuits: things to come: cem3340 vco Rf oscillators: vco integrated circuits for microwave/mmwave products. The reissue (this listing) is the same as the Rev G of the 80's. rvys ljpddpk rwnky arwtx higkf vyaotkt avauo bdbqpl wyhcwz evmgnc