LED Astable (CB25419E)

This transistorized astable for LEDs was found in the January 1992 issue of Radio Electronics magazine. The frequency is given by the capacitors.

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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...