Re: Need an Isolation Transformer for CTX-S (Philips 14CT2006)
Here's the modified circuit which includes the audio input which I think would be essential if you intend using it with a VCR.
As only one op amp is needed the quad op amp IC2 can be replaced by a single op amp such as a 741 or TL071. The pinout shown is OK for a 741 or TL071. If you use a different op amp check the pinout.
The unused inputs to the 4053 switch, pins 1,3,2 and 5 must be grounded.
I've also corrected the orientation of D6 & D9 and added a 12k resistor in series with D8 in the time constant switch control line.
Keith
|