Found in a 90s Hands On Electronics, this small preamp finds applications like microphones and other sources. Its gain is 3 dB with a response of 120 to 20 000 Hz.
This circuit is from a Radio Electronics magazine from August 1990. The circuit uses components from the...
The figure shows how to implement an audio power output for an operational stage. With the...
This soft start circuit was found in a 1965 General Electric documentation. The SCR and bridge...