Power supply control circuit

• US 20040037019A1
• Filed: 06/16/2003
• Published: 02/26/2004
• Est. Priority Date: 06/18/2002
• Status: Abandoned Application

• Current Assignee: Sankyo Seiki Manufacturing Co., Ltd. (Nidec Corporation)
• Original Assignee: Sankyo Seiki Manufacturing Co., Ltd. (Nidec Corporation)
• Inventors: Yokozawa, Mitsuo, Kuroiwa, Yukio
• Application Number:
  US10/462,488
• Publication Number:
  US 20040037019A1
• Time in Patent Office: Days
• US Class Current: 361/78
• CPC Class Codes: H02J 9/005 using a power saving mode for copiers G03G15/5004
• CPC Class Codes: H02M 1/36 Means for starting or stopping converters
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y04S 20/20 End-user application control systems

Abstract

A power supply control circuit that automatically shuts off power supply to an electric apparatus comprises a photocoupler for inputting a remote control signal, a switching circuit having a press-button switch provided toward an output end of the photocoupler and a power supply that is momentarily activated by shorting the switching circuit. Accordingly, a self-holding circuit is provided that maintains the active mode of the remote control signal for the photocoupler.

Claims

1. A power supply control circuit that automatically shuts off power supply to an electric apparatus, said power supply control circuit comprising:

a photocoupler for inputting a remote control signal;

a switching circuit having a press-button switch provided toward an output end of said photocoupler; and

a power supply that is momentarily activated by shorting said switching circuit;

thereby providing a self-holding circuit that maintains the active mode of said remote control signal for said photocoupler.

2. The power supply control circuit as set forth in claim 1 further comprising an automatic inversion switch that inverts said remote control signal to a negative cycle.

3. The power supply control circuit as set forth in claim 1 further comprising an abnormality detection circuit for detecting an abnormality in said electronic device to invert said remote control signal to a negative cycle upon detection of an abnormality in the electronic apparatus.

4. The power supply control circuit as set forth in claim 1 which monitors the mode of said electronic apparatus to invert said remote control signal to a negative cycle when said electric apparatus does not operate for a given period time.