With this circuit it is possible to measure RF signals with a common multimeter. Signals up to 200 MHz can be detected. The diode supports general-purpose equivalents.
This 1965 circuit consists of a small inverter for an ultraviolet lamp. The circuit is from a...
This circuit was found in a1980s Motorola documentation. The integrated circuit is from that time....
This circuit was found in a 1963 magazine. The magazine no longer exists, but the circuit can be...