Emergency lighting using white LEDs Circuit Diagram

This  Emergency lighting using white LEDs Circuit Diagram should be assembled only by experienced people and it is advisable to use a protection network, which can be a light bulb in series. For anyone who is thinking of making a system of emergency lighting and simple, this circuit is a cheap and functional output. The circuit is basically composed of a source AC / DC without a transformer, a charger, a system of automatic switching using a diode and a diode switch to change the brightness.

 Emergency lighting using white LEDs Circuit Diagram

List of Components

R1 = 1M, ¼ Watt, 5%

R2 = 10K, ¼ Watt, 5%

R3 = 10 Ohms 1Watt

All resistors are LED = 22 Ohms, ¼ Watt

C1 = 205/400V, PPC

C2 = 100uF, 25V

Z1 = 9 V, 1 WATT

T1 = BD 140

All diodes = 1N4007

BATTERY = 6 volts 4 AH

LEDS = WHITE, HIGH EFFICIENCY, 5mm

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