We found this circuit in a 2002 documentation. This die shows numbers 1 to 6 on a common anode display when the switches S1 and S2 are pressed. The circuit can be powered by voltages from 5 to 12 V.
This small unregulated variable power supply was found in an American book from the 60's. The...
This circuit indicates when the voltage of a 12 V battery is low. With changes, for example, the...
This basic circuit is from 1984 documentation. This circuit can be used as an efficient burglar alarm...