Far-distance remotely controllable rectifier with back-up battery

• US 6,208,118 B1
• Filed: 11/16/1999
• Issued: 03/27/2001
• Est. Priority Date: 11/16/1999
• Status: Expired due to Fees

• Current Assignee: DIGI Power Manufacturing Incorporated
• Original Assignee: DIGI Power Manufacturing Incorporated
• Inventors: Li, Yung-Feng
• Primary Examiner(s): Tso, Edward H.
• Application Number:
  US09/441,047
• Time in Patent Office: 497 Days
• Field of Search: 320/134, 320/136, 320/103, 320/127, 320/128, 320/140, 320/137
• US Class Current: 320/137
• CPC Class Codes: H02J 9/061 for DC powered loads
• CPC Class Codes: H04M 19/08 with current supply sources at the substations generating ringing current H04M19/04
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y02D 30/70 in wireless communication networks
• CPC Class Codes: Y04S 20/12 Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages

Abstract

A far-distance remotely controllable rectifier with a back-up battery may be applied to any electric appliance that requires a rectifier, and particularly to a wireless phone or the like telecommunication equipment, to serve as an uninterrupted power supply. A replaceable and rechargeable back-up battery and a ring-controlled switch circuit are provided to the rectifier of this invention to keep the machine working in case of an unexpected failure of the civil power or in response to detection of a phone call from a far distance to a ring-controlled switch for effecting a continuous power supply. Under normal conditions, the civil power is used to charge the back-up battery as a stand-by power source.

Claims

1. A far-distance remotely controllable rectifier with a back-up battery, comprising:

an AC/DC converter arranged to convert alternating electric power by means of a transformer and a first bridge rectifier into DC electric power

a charger circuit including a transistor and an adjustable voltage regulating diode arranged to charge said back-up battery with said DC electric power from said AC/DC converter, wherein said back-up battery is replaceable and rechargeable, and is capable of accepting said DC electric power from said AC/DC converter and of being replaced;

a DC/DC converter arranged to receive said DC electric power from said AC/DC converter and to convert said DC electric power from said AC/DC converter into a DC output having a predetermined voltage, said DC/DC converter being further connected to said back-up battery to receive DC electric power from said back-up battery in case said AC electric power fails;

a battery detector including a voltage divider made up of resistors and arranged to detect a voltage of said back-up battery and provide a signal to a control circuit to shut down the back-up battery in time to avoid over-discharge;

a controller connected to an output of said battery detector, an output of a phone ring detector, a power switch, and a control input of said DC/DC converter, said controller being arranged to receive an input signal from said power switch, to receive said signal from to receive a Rounded signal output by said phone ring detector, and to control said DC output of said DC/DC converter based on said input signal from said power switch, said signal from said battery detector, and said grounded signal output by said phone ring detector; and

a pilot lamp arranged to show a present output state of said DC/DC converter,

wherein said ring detector is arranged to detect an alternating ring signal of a phone call and apply the alternating ring signal to a second bridge rectifier to create a DC voltage to be in turn applied to a photocoupler, said photocoupler being arranged to send said grounded signal to said controller for judging whether said DC/DC converter should effect said DC output.

2. The far-distance remotely controllable rectifier with back-up battery of claim 1, wherein said controller is a programmed microprocessor.