Using a DAC038 IC this circuit is from Radio Electronics from May 1983. The circuit must be powered with a 5 V source and uses common operating outputs.
This optically coupled circuit was found in the February 1968 Radio Electronics magazine. The...
This limit detector or window discriminator uses an old operational amplifier, but it can be...
We found this circuit in a 1974 integrated circuit manual. Operational amplifiers can be of...