555 Code Practice Oscillator (CB25530E)

This circuit was found in the November 1992 issue of Radio Electronics magazine. It uses headphones and the tone is set at R3.

MMBZ Transient Suppressor Diodes
June 2017 - In its huge line of available components, Mouser Electronics highlights the new...
Audio Amplifier 741 (CB25288E)
The circuit below was found in the March 1990 issue of Radio Electronics magazine. The circuit...
LED Astable (CB25419E)
This transistorized astable for LEDs was found in the January 1992 issue of Radio Electronics...