Voltage Regulator (the 3rd)

Published:2011/7/16 0:37:00 Author:Felicity | Keyword: Voltage Regulator | From:SeekIC

Work of the circuit The circuit consists of automatic voltage regulation circuit and over-current protection circuit. (It is showed in picture 7-143.) Automatic voltage regulation circuit consists of Resistors R2, R3, potentiometer RP, capacitor Cl, C2 and Zener diode VS. Over-current protection circuit consists of Diode VD, resistor R3 and transistor V3. When the charging voltage of AC electric generator is less than the least value, VS and V1 is cut-off. The charging voltage of AC electric generator is increasing. Here the voltage charges the battery under the certain voltage. When the exporting voltage reaches the highest value, VS is transmitted. The exporting voltage of the motor is decreasing. When the voltage reaches the lowest value, the voltage begins to increase again. In this way, the exporting voltage of the motor is in the scope of 14-14.5 V. When the working current of V2 is regular, V3 is cut-off. Change the value of RP to change the scope of regulation. .



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