Drive circuit for a lamp

Details Drive circuit for a lamp Drive circuit for a lamp

1995-06-01

1997-04-15

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 32, 320 35, 320 39, 320 13, 315 50, H02J 700, H01J 744

Patent

active

056213034

ABSTRACT:
A drive circuit for a solar lamp includes a thermistor TH1 that reduces a power supply to a lamp if a Mosfet Q1 to which it is physically mounted becomes too hot. Also, a resistor R37 sets at low voltage level below which the battery will be isolated. This serves to set a lower but safe level than the voltage at which the circuit in block A isolates the battery during optimum operating conditions of the lamp. Such components prevent or at least inhibit the possibility of the battery being discharged beyond a level from which it cannot recover.

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