Electricity: power supply or regulation systems – External or operator controlled
Patent
1990-03-02
1992-02-18
Sterrett, Jeffrey
Electricity: power supply or regulation systems
External or operator controlled
323234, 323265, 323282, 323349, 323351, G05B 2402
Patent
active
050897683
ABSTRACT:
The invention relates to a power source circuit in which an output of a power source battery is converted by a voltage regulator constructed by a predetermined voltage regulating system and is output, an output voltage is divided by a resistance controller whose voltage dividing resistance value can be discontinuously adjusted, the divided voltage is input to the voltage regulator, and thereby controlling an output voltage, wherein means for controlling a voltage changing speed of a resistor is connected in parallel with a predetermined resistance element of the resistance controller. With the above construction, a voltage drop and a deterioration of voltage regulating efficiency which easily occur in the case of changing the output voltage from a low value to a high value in a stepwise manner are reduced. Then, the life of battery is prolonged and, further, an erroneous warning of the battery life is prevented.
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Canon Kabushiki Kaisha
Sterrett Jeffrey
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