This conventional relay light detector circuit uses a 741 as a voltage comparator. The sensitivity adjustment is made in R1. The supply voltage depends on the relay used.
We found this circuit with several types of sensors in a 1995 documentation. The circuit also has...
The A3906 integrated circuit from Allegro MicroSystems (www.allegro.com) consists of a single-step motor...
This antenna or booster amplifier operates with signals from the midband (MW) range up to the VHF...