This circuit for the power grid was found in the June 1969 Radio Electronics magazine. The SCR and diodes are rated according to the power of the controlled load.
This circuit for receiving or transmitting low power was found in old American documentation. It is...
Suggested by the 90s ARRL Handbook edition, this circuit aims to reduce or cancel noise at the...
This circuit allows you to read capacitances on a common analog instrument. It is part of an...