This circuit was based on Maxim's MAX4374. The circuit senses the current in a 0 to 20 V line and has a timed output signal, with time given by R1 and C1. Power is supplied with 5V.
This mechanical reverberator circuit for guitar was found in the February 1970 issue of Radio...
Found in an old English publication this circuit uses a dual gate MOSFET. Coils not specified....
This is the receiver for the previous circuit transmitter. Similarly, no information about the...