We found this circuit in the October 1996 Electronics Now magazine. The circuit uses LDRs as sensors and drives relays. The relays must have voltages according to the power supply.
This circuit was found in documentation from the 1980s. The transistor depends on the desired...
This circuit was found in the magazine Sperimentare 4 of 1977 and can be easily assembled using TIC...
This simple circuit was found in Popular Electronics from the 1980s. The circuit uses an LED as an...