This is design a very simple and cost effective mains operated LED lamp. This circuit is gives a very bright white light. This circuit is need twelve of LED for the operation. This is the figure of the circuit.
Since no transformer is used, the circuit is very compact and light weight. The mains supply is given to the bridge rectifier via the parallel network formed between R1 and C1.The bridge rectifies the mains supply. The resistor R2 limits the current through the LEDs. The capacitor C2 acts as a filter. The bridge D1 can be made by using four 1N 4007 diodes. D2 to D13 can be bright white LEDs.
Since no transformer is used, the circuit is very compact and light weight. The mains supply is given to the bridge rectifier via the parallel network formed between R1 and C1.The bridge rectifies the mains supply. The resistor R2 limits the current through the LEDs. The capacitor C2 acts as a filter. The bridge D1 can be made by using four 1N 4007 diodes. D2 to D13 can be bright white LEDs.
Aah! no doubt that its less space consuming and the remeady to the conventional transformer but i personally have tested the circuit at a input voltage range of 180-250VAC and a varing frequency range of 48-50 HZ and it is been found that the capacitor bulges out within 5 constant hours of load and the circuit fails.
ReplyDeleteSo keep on experimenting and incase if you need help then contact me as +91 9713820569, or you can even mail me at shiharanchoudhury@yahoo.in.
I am a professional electronic repairer and electronic project designer.
I am a student of engineering(Electronics & Communication).
hey u have stolen the circuit diagram from circuits today!
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