Using the 4001 integrated circuit, this latching relay can employ any general-purpose transistor. The power supply is according to the relay with voltage up to 12 V.
This circuit indicates when the voltage of a 12 V battery is low. With changes, for example, the...
This is one of the possible receivers for the CB4582E transmitter. The circuit is from 1995...
This circuit originally came out in a Budget Electronics from 1981. The American magazine no...