Generator control circuit having alarm controller
First Claim
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1. A generator control circuit of an ac generator for charging a battery which includes a field coil, said generator control circuit comprising:
- a voltage regulator for regulating an output voltage of said ac generator to a regulation voltage, a comparator for providing a first signal when the output voltage of the ac generator is equal to or lower than the regulation voltage and higher than a predetermined voltage which is higher than voltage of said battery when said battery is open; and
means for alarming when said comparator does not provide the first signal.
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Abstract
A generator control circuit of an ac generator which charges a battery includes a voltage regulator, a comparator which provides a control signal for controlling the voltage regulator when the output voltage of the ac generator is higher than a predetermined voltage and an alarming device which operates when the comparator does not provide the control signal. The predetermined voltage is set higher than voltage of the battery when the battery is open and equal to or lower than a regulation voltage of the ac generator.
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Citations
14 Claims
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1. A generator control circuit of an ac generator for charging a battery which includes a field coil, said generator control circuit comprising:
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a voltage regulator for regulating an output voltage of said ac generator to a regulation voltage, a comparator for providing a first signal when the output voltage of the ac generator is equal to or lower than the regulation voltage and higher than a predetermined voltage which is higher than voltage of said battery when said battery is open; and
means for alarming when said comparator does not provide the first signal. - View Dependent Claims (2, 3, 4)
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5. The generator control circuit as claimed in claim 5, further comprising a discrimination circuit connected to the field coil,
wherein said discrimination circuit provides a signal for resetting said holding circuit to hold said alarming means operative if field current is not controlled by said first switch irrespective of the first signal.
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10. A generator control circuit of an ac generator for charging a battery which includes a field coil, said generator control circuit comprising:
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output control means for providing a first control signal to reduce current supplied to the field coil when the output value of the generator is higher than a regulation value and a second control signal to increase the current supplied to the field coil when the output value of the generator is lower than the regulation value;
control switching means for maintaining a first control operation until said output control means provides the first control signal and changing from the first control operation to a second control operation when said output control means provides the second control signal. - View Dependent Claims (11, 12, 13, 14)
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Specification