Updated design based on the original Polivoks VCO
http://www.ericasynths.lv/en/shop/diy/diy-kits-1/diy-polivoks-vco-2/
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Erica Synths Polivoks VCO Oscillator Eurorack ModuleProfessionally NEW built, tested, tuned and calibrated to high national standards, using the highest quality components and has never been used in any eurorack enclosure before. Calibrated with a 50000 count multimeter. Assembled by an electronics engineer with ten years of experience. Only available as DIY. Module width 12HP; Module depth 42mm Eurorack flat ribbon power cable and a set of two Befaco M3 Knurlies screws are include.Will not sell order to United States, Russia and Belarus DIY Polivoks-inspired Oscillator VCO with nice extra – VCO Sync input. Simultaneous triangle, saw and pulse wave outputs, PWM CV and exponential FM inputs with attenuator. In VCO’s exponential converter we use the original matched transistor IC KR198NT1B (КР198НТ1Б) that was used in Polivoks synthesizer 1982. +-10V regulators for greater stability of operation, signal amplitudes adjusted to match requirements of contemporary modular synths. All output signals are also available simultaneously. CV inputs redesigned to accept positive CV signals. PWM circuit with manual and voltage controlled pulse width. Sync input, so you can synchronize the Polivoks VCO to another VCO in your system.FEATURES:Made in ex-USSR/Russia matched transistor IC KR198NT1B (КР198НТ1Б), used in the Polivoks Synth VCOTriangle, saw and pulse wave outputs Manually adjustable and CV controlled pulse width Great tracking across 8 octaves Exponential FM input with attenuator Sync input Octave switch – 5 octaves Audio output amplitude: 10VptpOctave range C0 - C8 Width: 12HPModule depth: 42mm Power consumption 35 mA +12V, 36 mA -12VSkiff friendly design Hopefully the pics speak for themselves overall it's incredibly straight and clean, and complete. Everything works perfectly!DELIVERY FROM EUROPEAN UNION, LATVIA by registered mail with the tracking number. The parcel can be tracked all over the world. Shipment from Latvia is carried out by Latvijas Pasts (Post of Latvia) and on the territory of the recipient's country by those local services that deliver regular post and registered parcels.You will receive the item as shown in the pics. Returns are not accepted. Import duties, taxes and charges are the buyer's responsibility.

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