Power standby switch circuit
A technology of standby switch circuit and power conversion circuit, which is applied in electrical program control, program control in sequence/logic controllers, etc., and can solve problems such as difficulty in standby power consumption.
Inactive Publication Date: 2012-07-11
杨富志
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Problems solved by technology
[0002] The standby power consumption of TVs, air conditioners, and desktop computers is greater than 3 watts because the standby switch circuit itself is in the position powered by the secondary power supply, which determines that the load powered by the secondary power supply can only be turned off during standby, so the existing It is difficult to reduce the standby power consumption of household appliances such as TV sets, air conditioners, and desktop computers to less than 1 watt
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[0015] Further description will be made below in conjunction with accompanying drawings and specific embodiments
[0016] Such as figure 2 As shown, the 1D negative pole is connected to the primary power supply, the positive pole is connected to the secondary power supply through 1C1, energy storage, 1D2 (1C2 energy storage), 1R2 and 1R1, BG1, BG2, and KE is output through 1R1, 1D3, 1R3; the 2D negative pole is connected to the secondary The secondary power obtained from the power supply (L1) passes through 2D4, 2R1 and 2D3, BG1, BG2 to output power supply E, and through 2D5 to output power supply 2E; the negative pole of 2D1 is connected to the secondary power supply (L2) and outputs KE through 2D2; the ground connection circuit L and image 3 , Figure 4 , Figure 5 , Image 6 The middle L connection is used as a channel to connect to its own working circuit. K is disconnected during standby, the voltage at both ends is high, the secondary power supply loses voltage, 2D...
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The invention provides a power standby switch circuit for turning off load of a primary power supply in a standby state. The power standby switch circuit consists of a power conversion circuit (DZ), a load (RL), a control (KZ) and a switch (K) and is characterized in that the primary power supply is obtained from two ends of the switch and passes through the load to form a loop; in a standby state, the switch is powered by the primary power supply when being started; when the K is closed, the primary power supply loses voltage, and the way of supplying power by stored energy is stably transited to the way of supplying power by a secondary power supply; and therefore, the problem that the standby power of the existing television, air conditioner and desktop computer is more than 3W is solved. The mutual transmission of control signals is guaranteed by an isolation circuit, the power supply required in a non-standby working state (the K is closed) is provided by a secondary power supply winding, the primary power supply is obtained when the two ends of the switch are separated, and the stored energy passes through the load to form the loop; and in a standby state, small current is obtained from the primary power supply to maintain standby work, and the load on the primary power supply is turned off, so that the standby power of the television and the air conditioner is 0.3W, and the total standby power of the computer and a display is 0.03W.
Description
technical field [0001] The invention relates to an on / off circuit of household appliances, in particular to a power standby switch circuit of household appliances such as televisions, air conditioners, and desktop computers. Background technique [0002] The standby power consumption of TVs, air conditioners, and desktop computers is greater than 3 watts because the standby switch circuit itself is in the position powered by the secondary power supply, which determines that the load powered by the secondary power supply can only be turned off during standby, so the existing It is difficult to reduce the standby power consumption of household appliances such as TV sets, air conditioners, and desktop computers to less than 1 watt. Common electricians are familiar with the primary power of the contactor, and the secondary power self-locking principle is used separately, combined with the application of the existing control signal isolation and mutual transmission technology, it...
Claims
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IPC IPC(8): G05B19/04
Inventor 杨富志
Owner 杨富志