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3dd15 regulator constant current source circuit

2014-11-27 10:31  
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3dd15 regulator constant current source circuit
This is the numerical control constant current source that can be used to charge the storage battery. The D/A converter outputs a voltage value to the in-phase port of the op amp, the two ports of the current I=Uad/sampling resistor are used to connected with the + and - poles of the storage battery. The overhead op amp is connected into the amplifier circuit with the magnification of 1/4. This device is used to measure the voltage of the storage battery. The regulator 3dd15 is as shown in the figure.