3-transistor amplifier (CB23537E)

This transformerless 16-ohm speaker circuit was found in a Radio Electronics from October 1963. The circuit is powered by 12 V and the gain is 50 dB.

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Digital CMOS Switch (CB16601E)
This bistable touch circuit using CMOS technology controls a relay. The supply voltage must be...
Machine gun (CB11961E)
This project is from the book Science Fair Projects by Newton C. Braga. In it we have a relay that...
Triggered sawtooth generator (CB7599E)
This circuit was obtained in an old documentation, but it is still current by the used components....