Patent ID: 11862423
Assignee: SHARP KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The relay control circuit according to claim 1, further comprising:
a signal generator that is capable of outputting OV when a voltage of the high-voltage power supply or the voltage of the low-voltage power supply are applied; and
a third transistor disposed between the another end of the coil and the reference voltage node,
wherein a high-voltage terminal of the third transistor is connected to the another end of the coil,
a low-voltage terminal of the third transistor is connected to the reference voltage node,
a control terminal of the third transistor is connected to a signal output terminal of the signal generator,
a control terminal of the second transistor is connected to the signal output terminal of the signal generator via a capacitor and is connected to the reference voltage node via a second resistor, and
the contact is predisposed to be dropping out when the voltage of the high-voltage power supply or the voltage of the low-voltage power supply is applied.