Direction Signal (CB25608E)

This circuit was found in the September 1993 Electronics Now magazine. It is based on the 555 and powers an audible indicator.

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Optical Isolator Power Switch (CB12413E)
This solid-state relay (SSR) or shield was found in a 1995 Electronics Now. The transistor can be...
Transmitter for Thermocouple LM10 (CB14312E)
The components used in this National Semiconductor circuit are not common today, but the...
Stereo Headphones Amplifier (CB982E)
The circuit presented in the figure is an amplifier for stereo sources with the Maxim MAX9723...