This Wien bridge oscillator was found in Radio Electronics from the 90s. The circuit uses the 741 which is a current component. The circuit requires a symmetrical power source.
Found in RCA documentation from the 1970s, this circuit is intended for firing thyristors in inverter...
This micro FM transmitter or wireless FM microphone makes use of a ceramic capsule as a microphone or...
This circuit is from the November 1974 issue of Radio Electronics magazine. The capacitor...