[sdiy] Vactrols == Optocouplers?

[Colin f]

> Oki, then optoisolator == vactrol?

Nope. Vactrols have a light dependent resistor.
Opto-isolators have a phototransistor.
It's much easier to swap a fixed resistor for an LDR to make a circuit
voltage controlled than it would be to adapt it to use the phototransistor
in an opto-isolator. It would be easier to adapt the circuit to use an OTA
configured as VCR if you cant find a vactrol.

Cheers,
Colin f




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