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Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s)...

were commonly named Vactrols, after a trademark of Vactec, Inc. The trademark has since been genericized, but the original Vactrols are still being manufactured...

manufactured by Doepfer: A-101-1 – Vactrol multimode filter A-101-2 – Vactrol low-pass filter / VCA A-101-3 – 12 stage vactrol phaser A-101-6 – Six Stage Opto...

Schematic of an AGC used in the analog telephone network; the feedback from output level to gain is effected via a Vactrol resistive opto-isolator....

Schematic diagram of a vactrol-based inverse law voltage-controlled amplifier with split grounds...

comparators Programmable low/high-pass filters Motorized potentiometer Vactrol Console automation "Digital potentiometers - frequently asked questions"...

passes through the laser beam. Resistive opto-isolators, also known as vactrols, are formed of a photoresistor in conjunction with a light source. The...

modulation. Many of Don Buchla's designs, including the Lopass Gates, contain vactrols - photoresistive opto-isolator employed as voltage-controlled potentiometers...

Description 185 Module 2009/2021 Multi-stage Sequencer by RYK Modular. Updated version released 2021 175 Module 2022 Triple Vactrol Resonator by RYK Modular...

including the Low-Pass Gates (later called Dynamic Managers) contain vactrols (photoresistive opto-isolators used as voltage-controlled potentiometers)...