| 摘要 |
PROBLEM TO BE SOLVED: To allow relationship between a battery temperature and a battery charging voltage to display linear characteristics having no step fall. SOLUTION: This temperature correcting circuit for a battery charging voltage comprises an operational amplifier 6 for changing an output voltage, based on a detecting resistance of a battery temperature detecting thermistor 5, an MOSFET 7 inputting the output voltage of the amplifier 6 to a gate terminal to change the on-resistance, a shunt regulator 3 connected in parallel with a secondary output circuit via a series circuit of a photocoupler 1 and a resistor 2, and a series circuit of two resistors 14, 15 having intermediate connection points connected directly to the input terminal of the regulator 3 through a series circuit of a resistor 12 and a capacitor 13 and directly connected to a reference terminal.
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