This circuit was found in a Motorola documentation from 1968. The circuit makes use of FETs and bipolar of the time and can be applied to modern equivalents.
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...