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In Variable power supply and charger with emergency light.What is the AH Rating of Battery,What is Voltage value of C1.What is the Transformer rating .Pls help me.
Hi Venkatesh,
I’m not the one who designed this circuit, but I can calculate the missing design values.
As the AH of the battery increases the duration for which the circuit gives power also increases. A capacitor of voltage more than 25V can be used as C1.
A 14V, 1A step-down transformer can be used.
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