LED Sequencer (CB21711E)

This is one of the many versions of this circuit that appear on this site. We got it from an internet documentation.

LM381 Tone Control (CB25277E)
The diagram shows a tone control with the LM381 IC. The circuit is from a Radio Electronics from...
Cheap radio control (CB7172E)
Very simple, this radio control circuit for short distances was found in an Electronic Design from...
Non-inverting amplifier with LM741 (CB25921E)
From an article in Radio Electronics magazine, May 1989, this circuit requires a dual power...