This boost amplifier was found in a Popular Electroniics from the 90s. The circuit operates up to 20 MHz depending on the coils used.
This circuit for receiving or transmitting low power was found in old American documentation. It is...
This circuit takes advantage of the hysteresis of a relay to provide a latching effect. The...
This high gain circuit is from 1969 General Electric documentation. The transistors are of the...