Battery (group) charging circuit with the adjustable charging voltage

Published:2011/6/20 20:22:00 Author:TaoXi | Keyword: Battery, group, charging circuit, adjustable charging voltage | From:SeekIC

Working principle: The circuit working principle is as shown in figure 1. This circuit is composed of the power supply circuit, the trigger circuit and the main control circuit. The 220 city electricity is reduced by the power switch S－S' and the power transformer T1, and then it is rectified by the full wave rectifier circuit which is composed of the diodes VD1－VD4 to become the Pulse DC power source. One channel is limited by the resistance R1, and it is stabilized by the voltage stabilization diode DW to output the 18V trapezoidal wave synchronous manostat as the power supply of the delay link of the astable oscillator RC which is composed of the time base integrated circuit NE555 and the external components; another channel outputs the 12V stable power as the operating power supply of the trapezoidal wave synchronous power supply IC2.



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