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 sequential relay actuation system circuit for traffic lights was found in Electronics Now...
This circuit uses two TTL trigger inverters to generate signals that can be adjusted at R1. The...
The integrated circuit used is uncommon today. We found this configuration in Motorola's 1990...