JPH0346269U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the operating principle of a power saving device installed in a conventional facsimile machine; Fig. 2 is a perspective view of the power saving device for a cable information receiving/transmitting mechanism according to the present invention; The figure is an electrical circuit diagram of the first embodiment of the present invention, Figure 4 is an electrical circuit diagram of the second embodiment of the invention, and Figure 5 is an electrical circuit diagram of the third embodiment of the invention. .

Claims (1)

[Scope of Claim for Utility Model Registration] (1) For cable information receiving/transmitting equipment comprising an AC power cord for connection to an AC power source and a cable terminal for connection to a transmission cable from a telephone office. a first AC terminal for connecting to an AC power supply, a second AC terminal for connecting the AC power cord, a first cable terminal for connecting to a transmission cable from a telephone office, and the cable information terminal. and two cable terminals for connecting to receiving/transmitting equipment.
and when a signal from a central office arrives via the transmission cable, or when the handset of a telephone assigned to the cable information receiving/transmitting device is removed from the telephone, the cable information After starting to supply power to the cable information receiving/transmitting equipment and finishing receiving signals sent from the central office to the cable information receiving/transmitting equipment via the transmitting cable, or When the signal transmission from the cable information receiving/transmitting device to the central office via the cable information receiving/transmitting device is completed, the power supply to the cable information receiving/transmitting device is stopped after a preset short period of time has elapsed. A power-saving device for a cable information receiving/transmitting device configured such that the cable information receiving/transmitting device has an AC input terminal used for connection with the AC power source and the cable information receiving/transmitting device.
It consists of an AC output terminal used to connect the AC power cord of the transmitting device, a control section, etc.
AC control means that is activated when current flows through the control section and supplies current from the AC power source to the cable information receiving/transmitting device via the AC input terminal and the AC output terminal; a collector and an emitter thereof; a transistor connected to a control portion of said AC control means and actuating said AC control means when current flows between said collector and emitter; two transistors connected to said collector and emitter, respectively, of said transistor; It consists of a photo receiver and a photo emitter having two terminals,
a photocoupler which conducts the photo receiver and activates the transistor when the photo emitter is activated; and a photocoupler disposed between the AC input terminal of the AC control means and the AC power source. is installed, taps current from the AC power supply, rectifies the tapped current, and supplies them to a photo receiver, a base of the transistor, a collector and an emitter of the transistor, and a control section of the AC control means. Tapping/rectifier circuit;
and the cable information receiver is configured such that the photo emitter is not activated by the current from the AC power source but is actuated only by the current from the cable. /Power saving device for transmitting equipment. (2) The power saving device for cable information receiving/transmitting equipment according to claim 1, wherein the AC control means is a relay, and the control section is a coil. (3) The power saving device for cable information receiving/transmitting equipment according to claim 1, wherein the AC control means is a thyristor, and the control section is a gate. (4) The power saving device for cable information receiving/transmitting equipment according to claim 1, wherein the photo emitter is a light emitting diode. (5) The power saving device for cable information receiving/transmitting equipment as claimed in claim 1, wherein the photo receiver is a CdS photo register. (6) Utility model registration claim 1, characterized in that a rectifier circuit is further provided between the cable and the light emitting diode and used to flow the current from the transmission cable to the light emitting diode. A power saving device for cable information receiving/transmitting equipment according to clause 5. (7) The AC controller is configured such that the AC control means continues to operate until a preset time even if the photo receiver becomes inoperable.
A power saving device for cable information receiving/transmitting equipment according to claim 1, characterized in that a first capacitor is provided for discharging into the control means. (8) a transformer whose primary winding is connected in series with an AC input terminal and an AC output terminal of said AC control means, respectively, and whose secondary winding is connected to said tapping/rectifying circuit; a second capacitor charged by the current of the AC control means and connected to a route between the collector and emitter of the transistor, and having a constant polarity;
The cable information receiving/transmitting device according to claim 1, further comprising a second rectifier circuit for causing current to flow only in the direction of the anode of the second capacitor. Power saving device for. (9) The cable information receiver according to claim 1 of the utility model registration claim, characterized in that a switch that is kept open at all times is connected in parallel to the collector and emitter of the transistor.
Power saving device for transmitting equipment.