5W Amplifier with LM383 (CB25309E)

This circuit for the car was found in the April 1990 Radio Electronics magazine. The speaker is 4-ohms.

Detector stage (CB20558E)
In the figure we have a typical detector stage for a radio receiver. The circuit is from 1963,...
50 W power control (CB8145E)
Found in a 1968 Texas Instruments documentation this circuit uses an SCR from that time. Modern...
Balanced Microphone Preamplifier I (CB4943E)
This circuit was obtained from an American publication of the 80's. The integrated circuit is of the...