This small audio amplifier uses an uncommon integrated circuit today. The circuit is from a documentation from the 70s and is indicated for portable receivers of the time.
This is the decoder circuit for the previous encoder (CB17011E) using integrated circuit MC14028. This...
This simple voltage regulator or stabilizer uses only two component and can source up to 100 mA to a...
We found this preamplifier for the 10 and 11-meter range in an old documentation for radio...