30 MHz Amplifier (CB5939E)

This low noise circuit was obtained from a 1980s US RF publication. Transistors used are uncommon today and the gain is 19 dB..

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Bq26601 3 A Battery Charger
July 2017 - Texas Instruments' new 3 A bq25601 single cell battery charger can be found on Mouser...
Ring Counter using PUT (CB5205E)
This circuit was found in old documentation. PUTs are uncommon components today. The circuit...
0 to 20 second timer (CB20370E)
This simple timer with unijunction transistor was found in an old American technical...