This circuit for audio applications was found in an English magazine from the 80's. The circuit has a pass band below 3 kHz making it ideal for telecom applications.
This circuit was found in a 1986 documentation and it may be difficult to obtain some of its...
This switching boost regulator, which provides a 24 V output from a 12 V input, was found in the...
This circuit for the 11-meter band, operating at 29.255 MHz was found in a Radio Electronics dated...