Emergency Light circuit
scheme of mini 9013
This is a mini series of
Emergency Lighting (simple) that serves to provide the lighting when the lights
power outages. Emergency lights can be used for e.g. exits, corridors, or in
the alley. But this series is not suitable for practical applications because
of the small size and short duration. Do not use a transformer circuit so that
it looks so simple and costs that are reasonably priced.
List of Components:
Q1, Q2, Q3 __ CS9013 or BC337 NPN transistors 9014 or 0.8
A 100V
D1 __ 1N4004 __ 1A 400V Diode or 1N4007 (1000V)
D2 __ 1N4148 __ 75V
150mA Diodes
C1 __ 47uF 50V __
Electronlytic capacitors
R1 __ 220K __ 1/2W ___
resistors
R2 __ 33 k __ 1W
resistors
R3 __ 10 k __ 1/2W ___
resistors
R4 __ 1 k __ 1/2W ___
resistors
R5 __ 15 k __ 1/2W ___
resistors
Lamp 2.4 V 5W
How it works:
When the electricity
dies then the power/voltage of electricity to be lost, until a series of mini
is built with 3Volt voltage it will work and turn on the lamp L1. R2, R3, D1
and C1 is connected as the power supply DC approx. 4.5 V. D1-diode used as a
rectifier to convert from AC to DC. And C1-capacitor is used to smooth the signal
fluctuates (DCV as pulses).
Under normal conditions,
the flow of current through the R4 for current limiting for Q1, and it will
then be an NPN transistor as a switch that controls the flows, from the R5 to
CE Q1 to ground pin. Therefore, there is no current to the base of Q2, Q3 so
the Lamp L1 is off. When the electricity dies then Q1 off, current can flow
through the base of Q2, Q3, then the lights will light up.
For a voltage of 3
volts, the friend of a friend can use NiCad batteries or rechargeable batteries
NiMH 1 .2V size x 2. This will provide enough light. When the electricity dies
then the system will work so that the lamp will light up. Use of the SW1 switch
on or off for this circuit.
Friend of a friend was
able to build the project on a Universal PCB Board because some of the
components. But we have to be careful with AC voltage should be placed on an
insulating box.