Found in an American documentation from the 90's, this circuit aims to light a neon lamp with voltages from 5 to 15 V. It is a small inverter that operates close to 15 kHz.
We found this 4-transistor receiver for the AM MW range in a 1960 transistor manual from Sylvania....
This 16-bit circuit was found in a 2005 Linear Technology application manual. The circuit uses...
The circuit is from an English publication from 1970, but it can be assembled with more modern...