Light Sensitive Relay with 741 (CB25478E)

This circuit for 12 V relays was found in the July 1992 Radio Electronics magazine. The circuit is set at R6.

| Clique na imagem para ampliar |

Bistable 4013 and 555 (CB4636E)
Activating a relay from pulses (from a monostable, for example) can be useful in many types of...
Programmable Irrigator (CB17631E)
This project uses an unusual integrated circuit that consists of a programmed timer. The circuit was...
Optical Receiver (CB10502E)
I found this circuit in a Popular Electronics from 1992. The circuit shows how we can receive...