This circuit keeps a set of lamps permanently on, even when there is a power cut. The circuit can be adapted to use LEDs and the 12 V battery can also be changed according to the lamps or LEDs.
This circuit can be found on this website in similar versions. The power supply is given in...
This car circuit can be used in other applications with the proper choice of resistor. We found it in...
This static switch or triac contactor was obtained from Philips 1969 documentation. The SCR is...