| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a voltage adjustment device which is improved in battery- charging voltage characteristic by setting a reference voltage at about a constant value, regardless of the temperature fluctuation and the voltage fluctuation of a generator. SOLUTION: A drive circuit G of a thyristor 17 is connected to a battery- charging circuit for feeding a battery 18 and a DC load 19 by means of a generator. A transistor Q of the drive circuit G is connected in series between one end K of the gate circuit of the thyristor 17 and a grounding terminal A, and a serial circuit of a Zener diode DZ for setting the reference voltage and a diode D is connected between the dividing point of resistors r1 and r2 for dividing the collector-emitter voltage of the transistor Q and the base of the transistor Q. In moreover, the circuit is constituted so that an abnormal voltage detecting signal is impressed upon the base of the transistor Q, when the battery 18 is opened.</p> |
