KR101011383B1 - Apparatus and method for reducing standby power consumption - Google Patents

Abstract

The present invention relates to an apparatus and method for reducing standby power, and more particularly, to an apparatus and method for reducing standby power, which can reduce power consumed in a standby state in which electrical or electronic devices such as televisions, audio, computers, and the like are powered off. .

To this end, the standby power reduction apparatus according to the present invention is a standby power reduction apparatus of an electric device having an operation mode and a standby mode, the mode sensing means for detecting whether the electrical device is in the operation mode or the standby mode, And a power supply means for dividing the external power at regular time intervals in the standby mode and outputting the external power to the electric device, and continuously outputting the external power to the electric device in the operation mode.

As described above, the present invention allows the minimum power required for driving the electric device to be periodically introduced in the standby state of the electric device, thereby reducing the standby power while the electric device is normally driven in the standby state.

Standby Power, Decrease, Power, Standby Mode

Description

Standby power reduction device and method {APPARATUS AND METHOD FOR REDUCING STANDBY POWER CONSUMPTION}

The present invention relates to an apparatus and method for reducing standby power, and more particularly, to an apparatus and method for reducing standby power, which can reduce power consumed in a standby state in which electrical or electronic devices such as televisions, audio, computers, and the like are powered off. .

Electric devices whose operation is controlled using a remote control such as television or audio, or electric devices that have a predetermined pre-power consumption operation before the original operation, such as an operation standby lamp, have a standby mode. Even when the electric device having such a standby mode is powered off, power consumption occurs when the power plug is connected to an external power source. In general, the power consumed by standby power per individual electrical equipment is 1W ~ 25W is small. However, the sum of the energy wasted by the standby power of these devices is enormous. In addition, the production of 1KW of electricity usually generates about 4kg of carbon dioxide, so if the standby power is left unattended, global warming may be further increased. Therefore, it is necessary to prevent energy waste by standby power not only for saving energy but also for preserving the global environment.

The simplest and easiest way to avoid wasting power from standby power is to disconnect the power supply by disconnecting the power plug each time the appliance is turned off. However, this is very cumbersome, so users know that standby power is being consumed, while leaving electrical devices unplugged.

Therefore, technologies for reducing power waste due to standby power while power plugs are connected to electric devices are being developed.

It is commonly used to attach a switch to a power strip or outlet device. The switch is attached to a multi-tap or outlet device. When the user is finished using the electric device, the switch is turned off to completely cut off the connection to the external power supply. To connect to a power source.

Alternatively, by using a human body sensor or a proximity sensor, when the user moves away from the electronic device, the connection between the external power source and the electric device is automatically cut off, and when the user is close to the electric device, the external power source and the electric device are connected again. There is technology.

The method of attaching a switch to the multi-tap or outlet device may be more convenient than unplugging the power plug, but it is still inconvenient to switch on / off the switch every time the user turns off and on the electric device. There is a ham.

In addition, the method of detecting the user's approach has a problem that the user has to consciously approach the electrical device in order to use the electrical device. Furthermore, there is a possibility of malfunction depending on the sensitivity of the sensor.

The present invention, unlike the conventional method, does not completely cut off the power of the electric device having the standby mode, but reduces the consumption of power by supplying a very small amount of power in the standby mode, the user wants to use the electrical device It is an object of the present invention to provide a method and apparatus for sensing the moment and immediately supplying the complete power required for the operation mode.

According to one aspect of the invention, there is provided a standby power reduction device. According to an aspect of the present invention, there is provided an apparatus for reducing standby power, comprising: an apparatus for reducing standby power of an electric device having an operation mode and a standby mode, the mode sensing means for sensing whether the electric device is in an operation mode or a standby mode, and the electric device is on standby. And a power supply means for dividing the external power at regular time intervals in the mode and outputting the external power to the electric device, and continuously outputting the external power to the electric device in the operation mode.

In addition, the standby power reduction device according to the present invention, the standby power reduction device of the electric device having an operation mode and the standby mode, the current sensing unit for detecting the current value supplied to the electrical device, and the external power is fixed An operation mode power supply having a standby mode power supply having a first switch for dividing at a time interval and connecting to the electric device, and a second switch for connecting or disconnecting the external power to the electric device; When the current value is less than a predetermined value, the second switch is opened and the first switch is controlled to divide the external power at a predetermined time interval and to connect the electric device. And a control unit for opening the first switch and closing the second switch to connect the external power source to the electric device.

According to another aspect of the present invention, a method for reducing standby power is provided. The method for reducing standby power according to the present invention is a method for reducing standby power of an electric device having an operation mode and a standby mode, the method comprising: detecting whether the electric device is in an operation mode or a standby mode; And a standby mode power supply step of dividing at regular time intervals and outputting the electric power to the electric machine, and an operation mode power supply step of continuously outputting external power to the electric device in the operation mode.

In addition, the method for reducing standby power according to the present invention is a method for reducing standby power of an electric device having an operation mode and a standby mode, the method comprising: detecting a current value flowing into the electric device; If the value of less than, the standby mode power connection step of controlling the first switch to divide the external power to the electrical device at regular time intervals, and if the detected current value is more than a predetermined value, the second switch An operation mode power connection step of connecting the external power to the electrical device through.

In addition, the standby power reduction method according to the present invention, the standby power reduction method of the electrical device having an operation mode and the standby mode, the step of detecting whether the electrical device is in the standby mode or operation mode, and the electrical device is standby When the mode is changed to the operation mode, the step of disconnecting the external power to the electrical device through the first path and connecting the external power through the second path, when the electrical device is changed from the operation mode to the standby mode, And disconnecting external power to the electric device through the second path, and dividing the external power at regular time intervals through the first path to connect the electric power to the electric device.

As described above, the present invention has the effect of reducing the standby power while satisfying the necessary conditions in the standby state of the electrical device by automatically performing its function without user intervention.

That is, the present invention has the effect that the minimum power required for driving the electric device periodically flows in the standby state of the electric device, thereby reducing the standby power while operating the electric device normally in the standby state.

In addition, the present invention has the effect of allowing the electrical device to operate stably by continuously supplying power to the electrical device during the switch connection delay time generated in the standby power reduction device when the electrical device is changed from the standby state to the operating state There is.

In addition, the present invention detects the phase of the external power supplied to the electrical equipment to prevent damage to the internal parts of the electrical equipment by preventing the external power from 0 degrees phase when the electrical equipment is divided into the power supply in the standby state Has the effect of ensuring stable operation without errors.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows a general use example of the standby power reduction device of the present invention. As shown in FIG. 1, the standby power reduction device 100 is connected to the power connection unit 210 of the electric device 200 and is connected through an external power source and a plug 101 which are not shown. Electrical device 200 as defined in the specification of the present invention refers to all devices that operate by receiving an electrical or electronic signal, a concept encompassing both electrical or electronic devices. Examples of the electric device 200 include home appliances such as televisions, audio, computers, and washing machines, which are widely used in homes, and office equipment such as fax machines and copiers used in offices.

The electric device 200 of FIG. 1 is a device controlled by the remote controller 230 and consumes a constant power from a power signal coming from the power connection unit 210 because it must receive a remote control signal even before operation. In this standby mode, when the user powers on the power switch 220 of the electric device 200 or powers on the electric device 200 through the remote controller 230, the electric device 200 is changed from the standby mode to the operation mode. Current required for operation flows into the electric device 200 and operation power starts to be consumed.

2 is a block diagram of the standby power reduction apparatus 100 according to an embodiment of the present invention. As shown in FIG. 2, the standby power reduction device 100 includes a noise and surge removal unit 140 to block noise and surge included in a signal from an external power source, and a standby power reduction device ( Internal supply unit 120 for supplying a DC voltage to the internal circuit of the 100, the current detection unit 150 for detecting the current value flowing into the electric device 200, phase for detecting the phase of the signal supplied from the external power source The sensing unit 151, the standby mode power supply unit 160 for passing the signal of the external power at regular intervals, the operation mode power supply unit 161, the power supply unit 160 for continuously passing or blocking the signal supplied from the external power source Output terminal 130 for receiving the signal of the external power through the, 161 and outputs to the electrical device 200, output detection unit 131 for detecting the value and duration of the signal output from the output terminal 130, standby Overall operation of the power reduction device 100 The control unit 110 for controlling the control unit, the adjustment signal input unit 111 for adjusting the operating conditions of the control unit 110 according to the characteristics of the electrical device 200, the operation display unit for displaying the operating state of the standby power reduction device 100 ( 170). In this case, a particularly thick line among the signal lines connected between the respective building blocks represents a line through which an external power signal flowing into the electric device 200 flows.

The noise and surge removing unit 140 removes noise included in a signal from an external power source and a surge signal having a higher voltage than a normal signal. The noise and surge removing unit 140 removes the noise included in the external power signal and the surge signal generated momentarily to prevent malfunction of the standby power reduction device 100 and the electric device 200, and Breakage can be prevented.

The internal power supply unit 120 rectifies an AC voltage coming from an external power source to generate a DC voltage capable of driving the internal circuit of the standby power reduction device 100. The DC voltage output from the internal power supply unit 120 is input to each component including the controller 110 to operate the controller 110 and each component.

The current detector 150 detects a current value flowing from an external power source and flowing into the electric device 200 connected to the standby power reduction device 100. The current detector 150 detects an inflow current value into the electric device 200 and transmits it to the controller 110. If the current value is less than the predetermined value, it is determined that the electric device 200 is in the standby state. If the current value is more than the predetermined value, it is determined that the electric device 200 is in the operating state.

The phase detecting unit 151 detects a phase of a signal coming from the external power when the external power is AC and transmits it to the control unit 110. As the phase detector 151 continuously detects the phase of the external power signal, the AC signal dividedly supplied to the electric device 200 when the electric device 200 is in the standby state may be started from the phase 0 degree.

The standby mode power supply unit 160 serves to divide and output an external power signal to the electric device 200 when the electric device 200 is in the standby state. In addition, the standby mode power supply unit 160 maintains the power supply for the switch delay time of the operation mode power supply unit 161 without immediately stopping the power supply when the electrical device 200 is changed from the standby state to the operating state. Allow 200 to be driven stably.

The operation mode power supply unit 161 functions to block or pass a signal of an external power source. When the electric device 200 is in the standby state, the external power signal is blocked, and when the electric device 200 is in the operating state, the external power signal is passed.

The output terminal unit 130 is connected to the electric device 200 and outputs an external power signal to the electric device 200. The output terminal unit 170 is connected to the standby mode power supply unit 160 and the operation mode power supply unit 161, respectively, and outputs a signal output from the standby mode power supply unit 160 and the operation mode power supply unit 161 to the electric device 200. To pass on.

The output detector 131 detects a value and a hold up time of a signal output from the output terminal unit 131 in the standby state of the electric device 200 when the external power is DC. Based on the value and duration of the DC signal detected by the output detector 131, the external power signal, which is DC, may be divided at regular time intervals and output to the electric device 200.

The controller 110 is responsible for controlling the overall operation of the standby power reduction device 100. The control unit 110 is generally composed of a microprocessor, connected to each component of the standby power reduction device 100 receives data from each component and sends a control signal to each component to control its operation. Specific control operations of the controller 110 according to an embodiment of the present invention will be described later.

The adjustment signal input unit 111 determines an operating condition of the standby power reduction device 100 such as a cycle and a duration of an external power signal dividedly supplied according to the characteristics of the electric device 200. The user may change the operating conditions of the standby power reduction apparatus 100 by manipulating the adjustment signal input unit 111 according to the characteristics of each electric device such as a monitor, a television, and an audio.

The operation display unit 170 displays an internal operation state of the standby power reduction device 100. The display unit 170 may be configured as a light emitting diode, and the display unit 170 may be differently displayed depending on whether the standby power reduction device 100 operates in the standby state of the electric device 200 or in the operating state of the electric device 200. Can be.

A detailed operation of the standby power reduction device 100 configured as described above will be described with reference to FIG. 3.

Before examining the specific operation of the standby power reduction apparatus 100 according to the embodiment of the present invention, first of all, the technical gist of the present invention briefly describes how the standby power consumption of the electric device 200 is reduced while overcoming the conventional problems. Let's explain.

In the present invention, when the standby power reduction device 100 determines the standby state or operation state of the electric device 200, when the electric device 200 is in the standby state, the external power signal is dividedly supplied to the electric device 200. In case of the operation state, the external power signal is passed as it is. That is, since the external power signal is not completely blocked by the electric device 200 in the standby state of the electric device 200, but part of the power signal is divided in time, it is possible to prevent waste of standby power and at the same time. When the 200 is powered on, a power signal exists so that the electric device 200 can be driven.

3 is a flowchart illustrating an operation of the standby power reduction apparatus 100 according to an embodiment of the present invention.

First, the standby power reduction device 100 is connected to the electric device 200 and the plug 101 of the standby power reduction device 100 is connected to an external power source. After the standby power reduction device 100 is installed in this manner, the standby power reduction device 100 is operated. The operation of the standby power reduction device 100 may be confirmed through the operation display unit 170.

When the operation of the standby power reduction device 100 starts, a signal from an external power source passes through the noise and surge removing unit 140 and then enters the current sensing unit 150 to input a current value flowing into the electric device 200. Detect (S10).

The signal passing through the noise and surge removing unit 140 is also input to the phase detecting unit 151 to detect the phase of the external power signal (S20). When the phase of the external power signal dividedly output from the standby mode power supply unit 160 and input to the electric device 200 enters a phase other than 0, the external power signal may be damaged. Detects phase in real time so that it can enter phase 0 degrees.

In the flowchart of FIG. 3, the phase detection step S20 is performed after the current value detection step S10. However, this is illustrated for convenience of the flowchart. The current value detection step S10 and the phase detection step S20 are parallel to each other. May be performed as

Next, it is determined whether the detected current value is greater than or equal to a reference value (S30). When the detected current value is greater than or equal to a predetermined value, it is determined that the electric device 200 is in an operation mode. When the current value is less than a predetermined value, it is determined that the electric device 200 is in a standby mode.

Specifically, the current value detected by the current sensing unit 150 is input to the control unit 110 and the control unit 110 uses the detected current value to determine whether the current state of the electric device 200 is in a standby state or an operating state. Judge. When the electric device 200 is in the standby state, a small amount of current is consumed by the electric device 200, but when the electric device 200 is in an operating state, a lot of current is consumed by the electric device 200. Therefore, when the current value generally consumed in the standby state is pre-calculated and the predetermined value is stored in the control unit 110 accordingly, the control unit 110 checks whether the detected current value is larger or smaller than the stored predetermined value and then supplies electricity. The state of the device 200 can be determined.

If it is determined that the state of the electric device 200 is in the standby state because the sensed current value is less than the predetermined value, the controller 110 performs the step S80 to step S100, and the controller 110 supplies the standby mode power supply 160 to the standby mode. If the control unit 110 outputs an external power signal and the detected current value is greater than or equal to a predetermined value, and it is determined that the state of the electric device is in an operating state, the controller 110 operates by performing steps S40 to S70. The mode power supply unit 161 continuously controls to pass the external power signal.

Looking at the step (S80) to step (S100), after it is determined that the electric device 200 is in the standby mode, the switch of the operation mode power supply unit 161 is first turned off (S80). Next, the phase of the external power output from the standby mode power supply unit 160 starts at 0 degrees (S90), and the switch of the standby mode power supply unit 160 is turned on for a predetermined time when the phase becomes 0 degrees. (S100). after. Returning to step S10 again, the process is repeated.

4 is a signal waveform diagram inside the standby power reduction device 100 when the external power source is alternating current. Regardless of the standby state or the operating state of the electric device 200, the standby power reduction device 100 receives a signal of an external power source as shown in FIG. The AC signal of the external power source can generally be 60Hz, 220V AC. If there is no standby power reduction device 100, such an AC signal enters the electric device 200 as it is, a large amount of standby power consumption occurs. However, according to an embodiment of the present invention, the standby mode power supply unit 160 of the standby power reduction device 100 in the standby state of the electrical device 200 divides the power signal as shown in FIG. To 200). That is, instead of inputting 60 AC signals per second to the electric device 200 as it is, for example, if 30 AC signals are divided and input, standby power is reduced to 1/2 compared to the conventional method. The external power signal dividedly supplied to the electric device 200 may be determined through the adjustment signal input unit 111 according to the characteristics of the electric device 200, and may be input in various forms including the shape as shown in FIG. 4C. .

On the other hand, the power-on command operation for all the electric devices 200 to transition from the standby state to the operating state is performed by pressing the power button directly or by using a remote control, the power-on command continued as shown in (d) of FIG. Since the time t2-t1 is longer than the division interval time, the power signal dividedly supplied is present within the duration so that the power on command can be sufficiently detected.

Referring to steps S40 to S70, after the electric device 200 is determined to be an operation mode, the controller 110 controls to turn on the operation mode power supply unit 161. The signal is output (S40). However, due to the switch delay time of the operation mode power supply 161, the switch is not immediately turned on. That is, as shown in (e) of FIG. 4, the control signal from the control unit 110 to the operation mode power supply unit 161 at a time point t3 at which the current value is detected to be greater than or equal to a predetermined value, that is, at the point of time when the operation state is detected. Is input, but due to the switch delay time Δt of the operation mode power supply unit 161, the operation mode power supply unit 161 is not immediately turned on and becomes conductive at time t4 after the switch delay time elapses. In addition, the detection of the change in the current value flowing into the electric device 200 is performed in real time, and the detection is possible in 1/120 seconds, that is, within a half waveform and even faster than this. Therefore, it is determined whether the switch delay time has elapsed (S50). If the switch delay time has not yet elapsed, the switch of the standby mode power supply unit 160 is kept on (S60). The switch of the standby mode power supply unit 160 is turned off (S70). After that, the process returns to step S10 again.

FIG. 5 shows a waveform diagram obtained by internally fast switching the signals to be dividedly supplied to further reduce standby power consumption. The standby mode power supply unit 160 may supply clean waveforms of one cycle or two cycles as shown in (b) or (c) of FIG. 4, but switching may be performed within one waveform by using a switch element capable of high-speed switching. The standby power consumption can be reduced in proportion to the number of off operations. Details thereof will be described later with reference to FIG. 7.

6 shows an internal signal waveform diagram of the standby power reduction device 100 when the external power source is a direct current. Regardless of the standby state or the operating state of the electric device 200, the standby power reduction device 100 receives a DC signal of an external power source as shown in FIG. When dividedly supplying a DC signal irrespective of a power pattern consumed in the standby mode of the electric device 200, the standby mode power supply unit 160 may have a predetermined time at any predetermined period as shown in (d) or (e) of FIG. 6. While outputting a direct current signal to the electric device (200). However, when considering the power pattern consumed in the standby mode of the electric device 200, the DC signal divided by the standby mode power supply unit 160 is synchronized to the standby mode power pattern of the electric device 200.

That is, in the standby mode of the electric device 200, the current sensing unit 150 of the standby power reduction device 160 detects the current value flowing into the electric device 200 to determine the point of time when there is a change in the current value, The output detector 130 detects the minimum voltage and the duration of the output signal and determines a waveform as shown in FIG. Then, the switch of the standby mode power supply unit 160 is controlled to output a signal synchronized with the waveform of FIG. 6B as shown in FIG. 6C.

7 is a circuit diagram illustrating a standby mode power supply unit 160 according to an embodiment of the present invention. As illustrated in FIG. 7, the standby mode power supply unit 160 may include a triac device K1 and an insulated gate bipolar transistor (IGBT) device K2. The standby mode power supply unit 160 according to the embodiment of the present invention includes both the triac K1 and the IGBT K2. In another embodiment, the standby mode power supply unit 160 includes the triac K1. Or it may consist of only IGBT (K2). As in the embodiment of the present invention, when both the triac K1 and the IGBT K2 are included, a switch SW for selecting one of the two elements is required when supplying the AC signal split in the standby mode. Do.

In general, the operation of the triac element K1 outputs the output immediately from the presence of the gate voltage, and outputs the output until the gate voltage reaches zero with only one short signal. As described above, the triac element K1 has an advantage that the switching speed is higher than that of the relay element K3 of the operation mode power supply unit 161 which will be described later. Therefore, the triac device is suitable for dividing the external power signal at regular intervals in the standby state. In addition, the insulated gate bipolar transistor K2 has an advantage of enabling high-speed switching than a triac device.

The standby mode power supply unit 160 receives the operation control signal of the control unit 110 through the T1 terminal to control the switching of the triac element K1, receives an external power signal through the T4 terminal, and receives the T3 terminal. As shown in (b) or (c) of FIG. 4, the electric device 200 separately outputs an AC signal that is an external power source. In addition, the standby mode power supply unit 160 receives the operation control signal of the control unit 110 through the T2 terminal to control the switching of the IGBT element K2, receives an external power signal through the T4 terminal, and receives the T3 terminal. The external device 200 outputs an external power signal as shown in FIG. 5. Referring to the process of outputting the waveform as shown in FIG. 5 from the standby mode power supply unit 60 using the IGBT element K2, first, an AC input through the T4 terminal is rectified and converted into a DC signal. In response to the magnitude of the output voltage of the AC signal is switched at high speed in the IGBT element (K2), the waveform as shown in Figure 5 by the PWM (Pulse Width Modulation) method. As such, the external power signal dividedly output to the electric device 200 through the T3 terminal of the standby mode power supply unit 160 is used for initial driving of the electric device 200.

8 is a circuit diagram of an operation mode power supply unit 161 according to an embodiment of the present invention. As shown in FIG. 8, the operation mode power supply 161 is composed of a relay element K3.

In general, the relay device has the advantages of simple driving, low cost, and high durability against instantaneous overcurrent, but has a disadvantage of generating noise on / off, short operating life, and particularly slow switching speed. According to this characteristic, a relay device is suitable for performing the function of the operation mode power supply unit 161 which cuts off and passes the power signal as a whole.

The operation mode power supply unit 161 receives an external power signal from the T7 terminal and outputs an external power signal to the electric device 200 through the T6 terminal. Such an operation is performed by a control signal of the controller 110 that enters through the T5 terminal. Is controlled by The relay element K3 is not immediately switched on when it is switched on, but is switched on after a certain switch delay time elapses due to mechanical or electrical causes. This switch delay time occurs when the transition to the operating state, and if the external power signal is not supplied during the switch delay time may cause a problem in the operation of the electrical device (200). Accordingly, the switch of the standby mode power supply unit 160 maintains the connection for the switch delay time so that the external power signal can be supplied even during the switch delay time, thereby continuously supplying the external power signal.

In the standby power reduction apparatus 100 according to another embodiment of the present invention, as described above with reference to FIG. 2, the standby mode power supply unit 160 and the operation mode power supply unit 161 do not exist separately. It may be composed of one device as well.

That is, as shown in FIG. 9, the power supply unit 162 divides the external power signal at regular time intervals and outputs the signal to the electric device 200 when the electric device 200 is in the standby mode, and the electric device 200. In the operation mode, the external power signal is continuously output to the electric device 200. When the power supply unit 162 divides and supplies the external power signal in the standby mode according to the switch element used, the power supply unit 162 may divide and supply the external power signal in a waveform as shown in FIG. 4 or 5.

The standby power reduction apparatus 100 according to an embodiment of the present invention has been described as an external device connected to the outside of the electric device 200, but is not limited thereto and is implemented as a built-in device installed inside the electric device 200. Can be. In addition, in the embodiment of the present invention, although the current sensing unit 150 of the standby power reduction device 100 is connected to the output terminal of the noise and surge removing unit 140, in FIG. 2, the current sensing unit 150 operates with the standby mode power supply unit 160. It may be connected to the output terminal of the mode power supply unit 161, and may be connected to the output terminal of the power supply unit 162 in FIG.

As such, those skilled in the art may improve or change the technical idea of the present invention in various forms. Therefore, the embodiments of the present invention described with reference to the drawings should not be construed as limiting the technical idea of the present invention, and the protection scope of the present invention is limited only by the matters described in the claims.

1 is a view showing a general use example of the standby power reduction device.

2 is a block diagram of a standby power reduction apparatus according to an embodiment of the present invention.

3 is a flowchart of a method for reducing standby power according to an embodiment of the present invention.

Figure 4 is a waveform diagram of the signal output from the standby power reduction device when the external power source is alternating current.

5 is another waveform diagram of a signal output from the standby power reduction device when the external power source is alternating current.

6 is a waveform diagram of a signal output from the standby power reduction device when the external power source is a direct current.

7 is a circuit diagram of a standby mode power supply unit according to an embodiment of the present invention.

8 is a circuit diagram of an operation mode power supply unit according to an embodiment of the present invention.

9 is a block diagram of a standby power reduction device according to another embodiment of the present invention.

Claims (21)

delete delete An apparatus for reducing standby power of an electric device having an operation mode and a standby mode, A current sensing unit for sensing a current value supplied to the electric device; A standby mode power supply having a first switch for dividing an external power at regular time intervals and connecting the electric power to the electric device; An operation mode power supply unit having a second switch for connecting or disconnecting the external power to the electric device; When the current value is less than a predetermined value, the second switch is opened and the first switch is controlled to divide the external power at a predetermined time interval and to connect the electric device. A control unit for opening the first switch and closing the second switch to connect the external power source to the electric device; And the control unit maintains the connection of the first switch for a connection delay time of the second switch generated when the second switch is closed. The method of claim 3, If the external power source is AC, further comprising a phase detecting unit for detecting the phase of the external power source, And the controller controls the first switch to divide the external power at regular time intervals and connect the external power to the electric device so that the phase of the external power starts at 0 degrees. The method of claim 3, If the external power source is a direct current, the output voltage sensing unit for sensing the minimum voltage and hold up time (hold up time) required in the standby mode of the electrical device, The controller controls the first switch to divide the external power at regular time intervals and connect the external power to the electrical device based on the values detected by the current sensing unit and the output sensing unit. delete The method of claim 3, The first switch includes an electronic switching means, And said second switch comprises a mechanical switching means. The method of claim 7, wherein The electronic switching means includes at least one of a triac and an insulated gate bipolar transistor (IGBT), And said mechanical switching means comprises a relay. The method of claim 3, And an adjustment signal input unit for inputting an operating condition with respect to the opening and closing time of the first switch according to the characteristic of the electric device. delete delete As a method of reducing standby power of an electric device having an operation mode and a standby mode, Detecting a current value flowing into the electric device; If the sensed current value is less than a predetermined value, the standby mode power connection step of controlling the first switch to divide and connect the external power to the electrical device at regular time intervals; An operation mode power connection step of connecting the external power source to the electric device through a second switch if the sensed current value is equal to or greater than a predetermined value; When the second switch is connected in the operation mode power connection step, the standby power reduction method of maintaining the connection of the first switch for the connection delay time of the second switch. The method of claim 12, Detecting the phase of the external power source before the standby mode power connection step when the external power source is AC; In the standby mode power connection step, when the external power is divided by a predetermined time interval and connected to the electrical device, the standby power reduction method for connecting the first switch so that the phase of the external power starts at 0 degrees. The method of claim 12, Detecting a minimum voltage and a hold up time required in the standby mode of the electric device before the standby mode power connection step when the external power source is DC; The standby mode power connection step of controlling the first switch on the basis of the sensed current value and the minimum voltage and duration to reduce the standby power to connect the external power to the electrical device at regular intervals. delete The method of claim 13, The first switch includes an electronic switching means, And said second switch comprises mechanical switching means. The method of claim 16, The electronic switching means includes at least one of a triac and an insulated gate bipolar transistor (IGBT), And said mechanical switching means comprises a relay. As a method of reducing standby power of an electric device having an operation mode and a standby mode, Determining whether the electric device is in a standby mode or an operation mode; When the electric device is changed from the standby mode to the operation mode, disconnecting the external power to the electric device through the first path and connecting the external power through the second path; When the electric device is changed from the operation mode to the standby mode, the external power is disconnected to the electric device through the second path, and the external power is divided at regular time intervals through the first path so that the electric device is disconnected. Connecting to, When the external power is connected through the second path, the standby power reduction method of maintaining the connection of the external power through the first path for the connection delay time occurring in the second path. The method of claim 18, Detecting the phase of the external power source before the mode determining step when the external power source is AC; The method for reducing standby power to start the phase of the external power at 0 degrees when the external power is connected through the first path. The method of claim 18, Detecting a minimum voltage and a hold up time required in the standby mode of the electric device before the mode determining step, when the external power source is DC;  The external power connection step when changing to the standby mode is a standby power reduction method for connecting the external power to the electrical device by a predetermined time interval based on the detected minimum voltage and duration. delete

Images