Cem3340 vco design review. The Range button switches between three different octaves.

Cem3340 vco design review These are CEM3340 VCO modules that are optimized for performance, having big spaced out knobs that are easy to operate on the fly, and each module has is own onboard tuner, to keep them all in tune during your gig. This is a recreation of the famed CEM3340 found in a host of classic synths (see boxout). By integrating a complete analog VCO on a chip, it made more compact and cost-effective synth designs possible. The AS Alfa 3340 VCO chip is Alfa’s modern version of the famous CEM3340 voltage-controlled oscillator. Sep 12, 2019 · This is a short description of the sounds you can expect from a CEM3340 VCO build. The design has been updated to use +12V and -12V power rails, as the original is designed to operate from +9V battery power. 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 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 This document provides the bill of materials and build instructions for a Timo Rozendal CEM3340 VCO module for eurorack modular synthesizers. Currently, all we get to see is a front panel design but it gives us a good idea as to what to expect. 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. Division 6's compact CEM3340 VCO is an analog oscillator with an assertive sound. I suggest you take a look at my other 3340 VCO design (the 'Really Good AS3340 VCO") project 18 on this website. The 3340 chip they use comes from a Latvian manufacturer (ALFA). Other Instructables in this serie: 4 Channels Mixer. It has basic waveforms and 3 simultaneous sync options. Division 6 CEM3340 VCO This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. $12. If you’ve used a sprung breadboard before, you should be right at home, as the layout is basically the same. It produces +-10vpp sine, triangle, ramp and modulateable pulse waveforms that track 1v/oct over a wide (6+ octave) range. The AS3340 is Alfa’s fantastic clone of the famous CEM3340 voltage-controlled oscillator. I'm bread boarding a VCO circuit using an Alfa AS3340, [1], which is kinda a clone of a CEM3340, if that's fair. Thomas Henry Rides Again. 1 inch graph paper then transferring the drawing to a copper clad board with carbon paper and finally making the traces with a sharpie. Also could I use the original pcb design and just change the CEM3340 to the AS3340? Reply Delete There hasn’t been a better design than the 3340. In Stock. DIY Build guide / BOM (pdf) Panel Template This VCO is based on the Aries AR-338 PMS VCO, which features phase modulated sync and a pan-pulse output. com)nlc1016 cem3340 vco, black magpie version (NLC1016MGPBMSTR) - nlc cem3340 vcoblack magpie versioncurrenNLC1016 C Division 6 CEM3340 VCO PCBs and Panel - Eurorack Oscillator PCB Set. Features Original CEM3340 (Rev. Detailed Description This module is an accurate reproduction of the SH-101 voltage controlled oscillator, using a CEM3340 (or AS3340) chip in the core. The datasheet design uses pretty much all the features of the chip, and shows one or two of its quirks too. The highly accurate exponential and linear control inputs are virtual ground summing nodes, allowing multiple control voltages to be mixed within the device itself. (They are Oct 28, 2018 · if all you need is a square wave vco for downclocking, and want analog, id suggest a 4046 based design. To make building and using the circuit convenient, we are offering boards and full kits in… CEM3340 VCO BOM Page 1/2 0. Just the phase modulated sync and pan-pulse sections are based on the Aries 338 PMS VCO, which uses a SSM2030. I can't get anything accurate over 2 octaves. 00. 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. building, modifying and repairing synthesizers Nov 7, 2019 · Hi Mikel. Assembled modules are built to order. I did this so I don't have to keep plugging cables in & out, and it's just a case of changing the knob positions to get a different wave out. 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. 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. Visual Bill of Materials; Bill of Materials; Assembly Instructions; Schematic; Calibration Video; Back to Main Product Page This module is based on the classic CEM3340 VCO chip, although I’m using a AS3340 clone. If you’re looking for a stripboard CEM3340 VCO design this is probably for you. 5v whenever I have it powered up. Coolaudio clone of the CEM3340 VCO. It is a nice stable analog vco with good tracking. It's almost as basic as the CEM3340 schematics can get with a few little extras I've come up with. VCO based on the CEM3340 chip. Read datasheets. The Electrosmith 3340 VCO is an all analog, voltage controlled waveform generator that uses a reissue of the legendary Curtis CEM3340 IC. Equipped with linear and exponential FM, and hard and soft sync, it has a really wide tonal palette. Page: 6 Pages. Resources. Jun 3, 2016 · Curtis Electromusic currently offers the sought after CEM3340 VCO, a rework of the original design. The SSI2130 is a newer design with many more features than the 3340, such as an onboard waveform mixer, triangle-to-sine converter, and waveform inverter to support "through-zero FM". 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. The 3340 offers triangle, saw and pulse wave outputs which we’ll complement by adding sine wave out. Things you'll need: -CEM3340 VCO module (of course!) -Power supply -Oscilloscope or tuner or som PCB for a CEM3340 based VCO with sine, triangle, saw, and pulse waves. " And via johnny83 on the Muff Wiggler Forum including contact info, price, and availability. 4 mm. Although they are pin-to-pin compatible, AS3340 needs 2 different resistors than CEM3340. Apr 2, 2021 · I am using AS3340 and CEM3340 chips in some different VCOs. Now I am asking if it is really possible to swap the CE3080 with the TL074 since the CE3080 is really hard to get. The current draw is about 200mA which seems a bit excessive I am using fixed 1 amp 12v fixed Regulators which get quite hot but still power the unit ok. To achieve a uniform 10 vpp output around 0 volt, I used a series of op-amps. Jul 13, 2020 · Obsession doesn’t pretend to be a straight-up emulation of the original OB-Xa, but rather a modern interpretation of it focused on the multi-voice architecture and analog modeling of the temperature-dependent fluctuations of the Curtis CEM3340 VCO chips. ;FeaturesSquare, triangle, and sawtooth wavesCoarse and finetuning controlsAdjustable 1V/O CV Simple 6HP Eurorack-format CEM3340 VCO (converted to kicad) - newdigate/kicad-vco3340. Sep 21, 2019 · Hi Built module and working well. 1 offer from $35. Polarity doesn’t Description/Usage 18hp Has phase modulated sync & pan-pulse output based on the Aries PMS-338 VCO. Four simultaneous, buffered 10Vpp (±5V) waveforms including DC-coupled ramp I had the same PWM issue when I put together the CEM3340 VCO Maximus, but I found a solution. It lists over 70 components needed including resistors, capacitors, ICs, diodes, jacks, pots, and switches. The powerful oscillator, whose core is a discrete Curtis IC CEM3340 chip, delivers sawtooth, triangle and square with pulse width modulation. Right now, I'm getting: 0v - 250hz | 0v - 250hz 1v - 510hz | 1v - 500hz 2v - 1000hz | 2v - 962hz I've tuned a lot of VCOs and have never had this behaviour before. 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) First, the datasheet design. - Euro format (10HP), circuit and panel PCBs, no wiring. CEM3340 VCO LMNC : Page 2 of 2 As far as LMNC's new VCO design--I dunno. 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. Plan and track work An 4HP Eurorack VCO module using Coolaudio V3340 (CEM3340 second-source). Can this be done by feeding a DC voltage into the linear FM input, or is an offset into the integrator (such as the JH living VCO) required. Easy to build and calibrate too. CEMosc has at it’s heart a CEM3340 or AS3340. Learn how to build this module here: htt I'm building three of LOOK MUM NO COMPUTER's DIY Synth oscillator modules. . Ships from and sold by Audio Electronics & More. Full temperature compensation makes these VCOs extremely stable, and eliminates the need for a temperature compensation resistor. 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. g. The CEM3340 was responsible for the main VCO used in quite a few classic synths There hasn’t been a better design than the 3340. Aug 20, 2019 · I've built it. It featured triangle, sawtooth, square and pulse waveforms with voltage-controllable pulse width. 3340 pin 16 dedicated +10v with tl431 Jul 28, 2021 · I'm a fan of this classic design (the VCO from the Pro 1, Memorymoog etc. CEM3340 REV G VCO IC by OnChip Systems. 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. 00 I built a faceplate and a timber case for the CEM3340 VCO and hooked it up to an Arturia Keystep for some sweet arps. It's a self-tuning CEM3340 VCO with wave mixer. It does tend to pull my +12v line down to 11. It's a Curtis CEM3340 based analog oscillator with triangle, puls It is pin-for-pin compatible with the CEM3340. Can be used as a standalone board, put in an enclosure, or mounted behind a modular synthesizer panel (a Eurorack-f In this Instructables I will show you how to assemble a full oscillator module based on AS3340 (CEM3340 clone). The Mosaic Analog VCO Module features a triangle core CEM3340 based VCO and provides four waveforms (sine, triangle, sawtooth, square) with smooth and accurate 1V/Oct tracking over 10 octaves. The CEM3340 or its AS3340 equivalent has two main advantages over many other VCO designs. May 4, 2019 · Finished up my implementation of a CEM3340 VCO. Insert the resistors into their proper locations (see BOM). CEM3340 seems to work OK in every design, AS3340 in most but not in all. Timo Rozendal's 8hp Eurorack module based on the Curtis CEM3340 VCO. basicbasic wrote:The CEM VCO from nonlinearcircuits is based on the Digisound design AFAIK. I used the che Fair disclaimer, I have never built a synth and have no experience with other designs (excluding the 2 op amp VCO that is V/Hz) There is a design in the service manual of the Jupiter 6 which is based of the CEM3340 I don’t know much about better discrete VCO designs. + Images in this review For SaleCEM3340 VCO Chip – Brand New - Voltage Controlled Oscillator ChipFactory tested and certified. As we’ll see, this lead to them being widely ignored. 73 votes, 13 comments. 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… Jan 14, 2020 · Now I am thinking about building synth. May 2, 2018 · I recently designed a basic VCO around the AS3340, which is a clone of the CEM3340 VCO chip. I offer it here also in case people are interested. 00. Please note that Alfa recommend a 51K resistor on the pulse output in place of the 10K resistor that the CEM3340 used. ). I have a pair of the 2hp version (which they call the "VCO"), which I enjoy very much. 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). Now updated to the 3340a. Contribute to jacobbarssbailey/vco3340 development by creating an account on GitHub. ESP32 is a series of low cost, low power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. Build tips are provided such as buying extra components in case of loss and checking orientations. Testing my newly built CEM3340 VCOs. Both oscillators have a similar set of controls. Code review. Part #: CEM3340. Many believe this chip to be the greatest sounding analog oscillator of all time. On this page is a description of the design by Thomas Henry, illustrated with plenty of waveform illustrations taken from his oscilloscope. There seem to be some subtle differences between the Alfa chips and CEM originals, particularly with respect to pulse width. CEM3340 VCO PCB. Kassutronics VCO 3340 (Wood Panel) -   kassutronics vco 3340Wood Panel VersionPicture reflects prototype pa This design does not use the built in CEM3340 pulse generator. I'm currently looking at voltage doubler schematics and there a lot of them. Arduino Wavetable Voltage Controlled Oscillator Testing the pulse, saw, sine and triangle outputs plus PWM and oscillator sync for the new CEM3340 VCO design Jun 28, 2023 · 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; Digisound-80 modular. Jan 6, 2021 · Poly-8 VCO. Stripboard layout is attached for review. It is a much better design and it will give you the correct control over Pulse Width. Manage code changes Discussions. Inspired by Look Mum No Computer's DIY strip board layout. All of these inputs are Nov 11, 2020 · It will be easy enough to mount this little stripboard on one of the M3 bolts used to mount the print of the 'Really Good VCO' and thus add a Sinewave output to that VCO. EDIT: Doh! that one is based on an Aries design. You can source your own chip, of buy AS3340 direct fr 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 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. ; The boards are available fullyassembled or in kit format. Images in this review No customer reviews. This attempts to compensate for the pitch change with temperature that occurs with VCOs. 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. Readme Jul 16, 2012 · Hi, If we can actually buy new CEM3340's then I might design a VCO PCB based around them. May 19, 2021 · This item: Division 6 CEM3340 VCO Oscillator Main Board PCB . They will be ready to ship within 1 week of ordering, usually I manage it in 1-2 days. Mar 1, 2024 · CEM3340 Voltage Controlled Oscillator (VCO): The CEM3340 VCO is probably the best-known of Curtis’ chips. The Curtis CEM3340 VCO has been reissued by Curtis Electromusic. Born from frustration of playing shows, or not having a tuner to hand and getting in tune enough to get going, instead of sitting around being out of tune. For plus it was cheap PCB+panel set, for minus - I am not a fan of PCB front panels. Manufacturer: Curtis Electromusic. Might not be the prettiest one out there 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. 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. 8 CEM3340 based oscillators setup as a row of individual modular oscillators with sawtooth, triangle and square wave outputs. Dec 17, 2017 · The design notes from Thomas Henry are amazing to read aswell. Thonk. As far as I know, at least a few of the 2hp "VCO"'s competitors use the very same chip. 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. CEM 3340 Core Schematic Module. The 1222 Performance VCO is Look Mum No Computer's first Oscillator PCB Design. A nice stable analog VCO with good tracking. 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. Code Review. Compared to other CEM3340 VCOs this module was especially made for live usage, with Coarse a The modern CEM3340 is the "rev G" but should be a drop-in replacement for the 3340s in a classic analog synth. The datasheet can be found here. The CEM3340 outputs 3 waveforms with different output levels. Division 6 CEM3340 VCO Eurorack Module from Synthrotek on Tindie. You can tap the Trianglewave straight from pin 10 of the AS3340 (or CEM3340) chip or from pin 12 of the TL074 quad opamp chip. Look Mum No Computer CEM3340 Performance VCO I'm building three of LOOK MUM NO COMPUTER's DIY Synth oscillator modules. a. Good info on implementation of the CEM3340 can be found here :-Electric Druid CEM3340 Page Next up in the #2hpTuesdays series of videos on the 2hp Eurorack modules is the VCO module. I think that will be even easier. Collaborate outside of code How to tune / calibrate the CEM3340 VCO from Division 6. The VCO Maximus is a CEM3340 based VCO Module. Saved searches Use saved searches to filter your results more quickly May 18, 2021 · This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. 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 May 18, 2021 · This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. SH-101). Apr 24, 2020 · Our CEM3340 VCO is a straight-forward, easy-to-build implementation of the CEM3340 voltage-controlled oscillator IC by Curtis Electromusic. 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. The boards are available fully-assembled or in kit format. ·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. Stripboard CEM3340 VCO. Hi, I've breadboarded the Look Mum No Computer CEM3340 oscillator design using Electricdruid_v3340 and want to do a stripboard prototype now. 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 CEM3340 VCO PCB. i think the HCT variant is the fastest, around 40MHz. I've recently built NLC's CEM3340 VCO and am having trouble with the calibration. The CEM3340 is extremely unusual in that it offers both Hard and Soft Sync inputs (pin 6 and pin 9), and neither of them work the way you might expect. In this guide, we’ll build a Eurorack 3340 VCO module using N8 Synth’s 10HP Eurorack prototype boards. Finished up my implementation of a CEM3340 VCO. The ESP32 series employs either a Tensilica Xtensa LX6, Xtensa LX7 or a RiscV processor, and both dual-core and single-core variations are available. The design is a wonderful, versatile, and musical creation made possible by a combination of the genius of Thomas Henry and Doug Curtis' CEM3340. I constructed the PC boards myself after drawing my circuit on . - Hard and soft sync. Contribute to xnotox/CEM3340 development by creating an account on GitHub. There’s voltage controller PWM, Sync and FM with a Lin/Exp switch. The excellent super stable and versatile CEM3340 voltage controlled oscillator, originally d The VCO itself is based around the classic CEM3340 chip by Curtis Electronics, and I'm using all 3 wave outputs (square, triangle & sawtooth) - they all feed into the TL072 mixer in the third image. So it was my first and last SMD DIY module. I wish more designers published those. File Size: 3MbKbytes. Incidentally, this is the same chip that was used in some Roland classics (e. This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. The self-tuning idea was inspired by Look Mum No Computers VCO with a tuner module. It has the basic waveforms and 3 simultaneous sync options. using the TL431 and I have a dead VCO. $16. The CEM3340 VCO chip is one of the legendary chips designed by Doug Curtis that played an important role in the analog polysynths. 47K subscribers in the synthdiy community. Aug 28, 2019 · 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) First, the datasheet design. The AR-338 used a SSM2030, so it was not too hard to modify the sub-sections to suit the CEM3340. This design does not use the built in CEM3340 pulse generator. To my utter delight and amazement, Curtis Electromusic, which morphed into OnChip Systems, has re-issued the venerable CEM3340. It also allowed for hard and soft frequency synchronization. Although more compact, each VCO features a vast range of modulation capabilities, including hard sync, PWM, 1V/octave and exponential/linear FM. Fabricated using the original Doug Curtis design information. CEM3340 VCO Documentation. 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. AS3340. Note the Rev G in th. In this article, we will dive into the features of the Mosaic Analog VCO Module and explore the unique sound that can be achieved with the Curtis CEM3340 IC. The core of the VCO circuit is built on an N8 Eurorack breadboard. Design of a frequency synthesizer to generate the 20 GHz output signal from 100 MHz HONEYEATER is a classic analog VCO with two sub-oscillators and mixable waveforms. However. (Yes, Nonlinear Circuits also has a vco based on this chip, but that one is bigger and with some extra's that my version does not feature. Description: Voltage Controlled Oscillator. "Dear all, I've been speaking with onchip for the last 3 months and they have already produced a new batch of CEM 3340. I already studied the original digisound 80 VCO design and made a pcb in kicad out of those. - Exp and linear (DC coupled) frequency inputs. Here’s what Cox has to say about the video: This video is a demonstration of the newly manufactured Curtis Electromusic CEM3340 oscillator IC. Firstly it doesn’t require a temperature coefficient resistor. Now i will use potentiometers from the outputs of the sequencer section to the vco, but it would be fun to have much more complex inputs/waveforms available from a signal generated by the Arduino (sorry analog synth purists). - arkival/JordanAceto-CEM3340_VCO May 18, 2021 · This VoltageControlled Oscillator is based on the Curtis CEM3340 IC. Manage code changes Issues. 00 $ 12. G) architecture for a rich, analog sound. - Circuit and panel PCBs both single sided for ease of DIY. No problem with SMD soldering, I have done it with soldering tip 0. As you can see, for such a feature rich VCO, there are not all that many components. - Designed for +/- 15V, may run at +/- 12 with some adjustment. a cmos 555 could also get you close, but its less linear if i recall correctly. And, crucially, it had full temperature compensation making it very stable. Manage code changes Simple 6HP Eurorack-format CEM3340 VCO. The circuit was featured in 2019/Issue 3 of Nuts & Volts magazine. I’ve took some inspiration from the Maximus VCO design from Thomas Henry. Jan 5, 2025 · SH-101 VCO PCB. The datasheet for the chip has a circuit [1], as has LookMomNoComputer [2] and electricdruid [3] has a few circuits. Download. Based on Look Mum No Computer’s excellent diy modular. These are CEM3340 VCO modules that are optimized for performance, having big spaced VCO module for Eurorack modular synthesizers; 4 individual VCO sections plus master VCO section; Capable of monophonic, paraphonic, and polyphonic operation; Waveforms include saw, triangle, and square; Supports frequency modulation (linear and exponential) and pulse-width modulation; CEM3340-based VCO (triangle core) Size: 18HP wide, 40mm deep 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. ; Can be used as a standalone board, put in an enclosure, or mounted behind a modular synthesizer panel (a Eurorackformat panel is available from us, or create your own). The Range button switches between three different octaves. 00 Ex Tax: $16. The CEM3340 is There hasn’t been a better design than the 3340. That is the new chip. They are available for $15 each! 3D design Copy of CEM3340 VCO Case created by Varin BloodAxe with Tinkercad PCB for a CEM3340 based VCO with sine, triangle, saw, and pulse waves. The Pulse Width input of the chip on pin 5 needs to vary between 0V and +5V to get the correct Pulse Width control. Hello everyone! I am in the works of building myself a DIY eurorack modular synth. 100% compatible with older CEM3340 chips. The 3340 is the oscillator chip found in many of the famous polysynths of the analog era; the Sequential Prophet 5 and T8, the Oberheim OB-Xa and OB-8, the Roland Jupiter 6 and MKS-80, and even the MemoryMoog. About this item. Note the Rev G in the image. - arkival/JordanAceto-CEM3340_VCO Oct 18, 2016 · I have made a small vanilla implementation of the cem3340 vco for eurorack in 8 hp. I will also share with you gerber files to have both printed circuit board and panel board manufactured by professionals at low cost. Top. 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. 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. nlc1016 cem3340 vco, black magpie version (NLC1016MGPBMSTR) - nlc cem3340 vcoblack magpie versioncurrently shipping v6 pcbs (by synthcube. CEM3340 VCO. They are available for $15 each! frequency central cem3340 VCO, full kit euro 10hpVersion 2CEMosc is a stable AS3340 based VCO which tracks beautifully, and is feature rich. Aug 22, 2018 · The Neutron features two similar oscillators based around the V3340 VCO chip. Electric Druid. 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 Simple 6HP Eurorack-format CEM3340 VCO. it only has 1 CV input, and 1course tune, however you can add more CV inputs if you want straight away, by simply adding another 100k resistor to a jack socket coming off pin 15 of the CEM3340!!! Aug 19, 2015 · - CEM 3340 based VCO, essentially the reference design. 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. 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. The schematic can be found at an external link This Voltage-Controlled Oscillator is based on the Curtis CEM3340 IC. 5mm Jack x7 CONNECTORS J1-J7 (Control Board) Header RA 12P x1 P1 10P Box Header x1 P2 10K Trimmer x1 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. Instead, an typical opamp circuit is used for the Pulse wave output. Try newer version - AS3340A. I'd like to add a linear detune function. This is the ONLY authorized remake of the original trademarked by CEM. 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. SOP-16 package. Top . xmau jyhl pgsypxf jmmaqn znaek aqdkkwq xylhg eqq qxpwaohlm utnoln