We found this circuit in documentation from the 1980s. It is an input stage for a digital frequency meter. The circuit can operate with signals up to a few tens of megahertz.
Found in Elektor Electronics from the 90s, this circuit produces the tone of 1 750 Hz for calling VHF...
Maxim MAX20056B 6 Channel High Brightness LED Controller Maxim Integrated makes available through...
This 20W amplifier was found in 283 circuits from the 90s. The MOSFET admits equivalents. The...