One way to prevent reverse polarity of the DC power supply circuit


Posted on Mar 28, 2007

Adjustment potentiometer RP, can change the over-voltage limit setting. If the DC power supply polarity is reversed, and there may be burned equipment components, for which pow


One way to prevent reverse polarity of the DC power supply circuit
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er can be installed a reverse polarity protection circuit. Circuit shown in Figure 13-91. When the power is properly connected, the light emitting diode VL does not shine. When the power is reversed when, VL lights, and because of the diode VD deadline, to protect the electronic equipment.




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