Found in a1968’s Burr Brown documentation, this shield uses an integrated circuit from that time, which is uncommon today.
We found this circuit with JFETs in a Radio Electronics magazine from June 1969. The circuit has...
Indicated for frequency measurements, this circuit can operate with inputs up to 1 MHz. We found...
This general-purpose transistor audio amplifier was found in the March 1990 issue of Radio...