Suggested by a 1965 Electronic Design, this circuit has a gain of 15 dB at 45 MHz and can be changed to operate on other frequencies. The tetrode FET is an uncommon component today.
The search coil of this detector consists of 140 turns of wire 18 in an 8 inch diameter form. The...
This circuit was found in a 1980s documentation. The low voltage circuit uses a PUT. Transistors can...
Shunt-type regulators are connected in parallel with the load by diverting the current to behave as a...