We find this circuit in American documentation from the 1980s. It consists of a frequency folder using a varicap. The capacitors and coils depend on the frequency of operation.
March 2017 - Mouser Electronics announces the availability of MAX17523, an overcurrent and...
This circuit uses a 7-segment display to indicate the logic level of a test circuit. The power...
This circuit, from the 70's, can be assembled with a more modern FET like the BF245. The circuit is...