The maximum frequency of this circuit is 500 kHz. We found it in a documentation for radio amateurs from the 1980s. The integrated circuit used is uncommon today.
This circuit, which has a very common configuration, was obtained in a 1994 documentation. It can...
This power control was found in a 1968 power circuit manual. The SCRs are according to the power of...
This traditional crystal radio circuit was obtained from a 1990 documentation. The diode can be...