Circuit diagram of solid-state circuit automotive voltage regulator (1)
This circuit is used to replace the electromechanical charging regulator composed of the generator system in the car, and its performance is better than the latter. It prevents the 12V lead-acid battery from being undercharged or overcharged, thus extending the life of the battery. LM723 is used as a switching regulator to excavate the excitation current of the generator. The resistance of R2 must be adjusted so that the charging voltage can be maintained at the full voltage of the standard car battery of 13.8V. Use the relay to use the low-light lamp as the charging indicator of the generator. Instead of using charge and discharge ammeters as indicators. Q1 is 2N2063A (SK3009), 10A, PNP transistor.
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