Description. Here is a simple and powerful LED based night lamp circuit that can be operated directly from the 230V mains supply. The are total 24 white LEDs used and the lamp produces an output of around 15W.The resistance R1 and capacitor C1 provides necessary current limiting. The circuit is sufficiently immune against voltage spikes and surges. Circuit diagram with Parts list. Notes. Assemble the circuit on a general purpose PCB. The capacitor C1 can be polyester type. White LEDs are preferred in this circuit.