Found in old American documentation, this circuit demodulates signals from 1 kHz to 10 kHz for telemetry applications using the FM band.
This amplifier was found in a Japanese publication in 1972. Transistors are uncommon today, and...
The current of this source is 200 mA at the most, and the output depends on the zener that may...
Found in Mallory documentation from 1968 this circuit uses an integrated circuit from that time. The...