Low loss power supply of solar-powered light circuit diagram

Published:2014/3/20 21:02:00 Author:lynne | Keyword: Low loss power supply of solar-powered light circuit diagram, LM324, LM385 | From:SeekIC

Solar lamp circuit is a low-loss circuit, using a four-pin 7W CFL (compact fluorescent lamps) and a 12V ,7-Ahr sealed maintenance-free batteries. Inverter efficiency greater than 85%, the quiescent current is less than 2mA. It has a protective function with battery discharge and overcharge protection feature parallel charge controller. Low quiescent current, over-discharge protection function and overcharge protection to ensure that the three very long battery life. Preheat function prevents the inverter CFL ends of black, thus extending its life. This circuit can be used as a reliable and compact portable light source in rural areas, in urban use as emergency light systems. Shunt charge controller circuit comprises IC1 (low current 2.5V voltage reference LM385) and IC2 (LM324 comparator). With resistors R1 ~ R8 and transistor Q1 IC2A prevent battery discharge. Solar-powered lights low-loss circuit diagram shown in Figure:



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