Ultramicro power consumption standby power supply
A technology for standby power and power consumption, which is applied in the direction of adjusting electrical variables, converting irreversible AC power input to DC power output, instruments, etc., and can solve the problem of high standby power consumption of standby power.
Inactive Publication Date: 2009-05-20
张飞然
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Problems solved by technology
The invention solves the problem that the power consumption of the standby power supply of various electrical equipment is relatively large at present, and at the same time, it has the function of reactive power compensation
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[0023] 1, figure 1 It is a schematic diagram of a capacitive voltage dividing rectification filter circuit in the ultra-micro power consumption standby power supply of the present invention. An example is used to illustrate the calculation method of each parameter: For example, AC power supply voltage ACin=220V, AC power frequency 50Hz, design a DC power supply with no-load output voltage Vo=15V, maximum operating current Io of 100mA, according to formula 3 and formula 4 , Imax=0.2A, C1=Imax / ACinω=0.2 / (220×6.28×50)≈2.89×E-6(F)=2.89UF, a capacitor of 3 microfarads and 630 volts can be used; according to formula 2, it can be obtained C2=(C1×ACin / 0.707Vo)-C1=(3×220 / 0.707×15)-3≈59.2UF, a 62 microfarad 50-volt non-polar electrolytic capacitor can be used; the selection method of rectification filter electrolytic capacitor C3 and Ordinary DC power supply is the same, 470 microfarads and 50 volts can be selected. The voltage regulator DZ1 is used to absorb the pulse voltage in the p...
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The invention aims to provide an ultra-low power consumption standby power supply with the function of power factor compensation. In order to realize the aim, the ultra-low power consumption standby power supply adopts the technical proposal that alternating-current commercial power is subjected to capacitive division to obtain adequate low-voltage alternating current, and the low-voltage alternating current is subjected to rectifying and wave-filtering, linear voltage-stabilizing or switching power supply voltage-stabilizing to obtain stable direct-current voltage which is then supplied to a standby circuit of an electric appliance and taken as the standby power supply. Due to adoption of capacitive division, the ultra-low power consumption standby power supply has capacitive character in an electric network and has the function of power factor compensation. The ultra-low power consumption standby power supply solves the problem of overlarge standby power consumption of the prior standby power supply of various electric appliances, and is suitable to be taken as the standby power supply in the electric appliances of which standby circuits do not need to be isolated from the alternating-current power supply, such as air conditioners, electric refrigerators, electric fans with function of remote control, electromagnetic ovens, duplicating machines, facsimile apparatuses, televisions provided with thermal chassis, computer displays and so on. The ultra-low power consumption standby power supply can completely replace the standby power supply of the prior household electrical appliances in various fields, so as to improve the utilization rate of the power supply, can improve the power factor and the harmonic current of an alternating-current network, and has positive function of reducing energy consumption and relieving increasingly strained energy pressure and environmental protection pressure.
Description
technical field [0001] The invention belongs to the technical field of DC stabilized power supplies, in particular to an ultra-micro power consumption standby power supply with a power factor compensation function. Background technique [0002] The global energy is facing a crisis, how to minimize energy consumption has become an urgent issue. In 2000, under the promotion and advocacy of the International Energy Agency, the international community proposed the "1-watt plan" to reduce the standby power consumption of all electrical appliances in the world to 1 watt in 10 years. In response to this plan, the European Union has signed an agreement with some electrical appliance manufacturers, promising to reduce standby energy consumption year by year, and reduce the standby energy consumption of most equipment to 1 watt by 2010; According to statistics, last year alone, the "Energy Star" certification saved US $14 billion in energy savings. However, my country's "1-Watt Plan...
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IPC IPC(8): G05F1/46H02M5/08H02M7/06
Inventor 张飞然张亦翔张幼彬
Owner 张飞然
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