This circuit is from an old American publication. It divides a 40 to 60 MHz TTL signal by integer values such as 2, 3 or 4. The circuit must be powered by 5 V.
This S-meter or signal strength meter, was originally designed for the 80's Regency receiver, but can...
This circuit is intended to reduce the 12V from a car outlet to 9V. The current is in the order of a...
This sensitive millivoltmeter for alternating voltages was found in a French publication in 1996...