Amplifier for 12 V (CB8962E)

This configuration with the LM383 appears elsewhere on this site. The circuit shown was obtained from a 90s American documentation.

Audio Generator 4093 (CB6887E)
The circuit, shown in the figure, consists of an audio oscillator that generates signals between...
Spy transmitter detector (CB7546E)
This circuit was found in a 1992 PE Hobbyst. The circuit detects the presence of spy...
LED Flasher Using in Unijunction Transistor (CB531E)
This circuit produces low power flashes in a LED. Frequency is adjusted by P1 and depends also on...