Using the 741 this basic circuit was found in the November 1973 Radio Electronics magazine. The power supply must be symmetrical. The components can be recalculated for other frequencies.
This circuit is suitable for automotive signaling applications. The integrated circuit is not...
This circuit is from the LM3914 manual and can be found elsewhere on this site and from other...
This circuit was obtained from the April 1978 Radio Electronics magazine. The other circuit is a...