Switching voltage-stabilized power supply with low standby power consumption
A switching stabilized power supply, low standby technology, applied in the direction of output power conversion devices, electrical components, high-efficiency power electronic conversion, etc., can solve problems such as energy waste, and achieve the effect of saving energy waste and low standby power consumption
Pending Publication Date: 2020-01-10
广东鉴面智能科技有限公司
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Problems solved by technology
While the standby function provides convenience for residential users, it also causes a lot of energy waste
Method used
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0017] A switching regulated power supply with low standby power consumption, including an impedance loop unit (1), a double L-shaped filter unit (2), a main switch tube and a constant current drive unit (3), a sampling and stabilizing unit (4) and an output filter unit (5);
[0018] The impedance loop unit (1) is composed of a diode D1, a zener diode D2, and a resistor R1, the cathode of the diode D1 is connected to the cathode of the zener diode D2, and the ...
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The invention provides a switching voltage-stabilizing power supply with low standby power consumption. The switching voltage-stabilizing power supply comprises an impedance loop unit, a double-L-shaped filtering unit, a main switching tube, a constant-current driving unit, a sampling voltage-stabilizing unit and an output filtering unit; the impedance loop unit is composed of a diode D1, a voltage stabilizing diode D2 and a resistor R1; the negative electrode of the diode D1 is connected with the negative electrode of the voltage stabilizing diode D2; the resistor R1 is connected in parallelwith the voltage stabilizing diode D2; and the double-L-shaped filtering unit is composed of an inductor L1, an inductor L2, a capacitor C1 and a capacitor C2. According to the switching voltage-stabilized power supply with low standby power consumption, energy waste can be effectively reduced with ultra-low standby power consumption; the switching voltage-stabilized power supply can normally workwithout preloading a load; the ultra-low standby power consumption of the switching voltage-stabilized power supply can be realized; and the normal standby power consumption of the switching voltage-stabilized power supply is smaller than 20 mW.
Description
technical field [0001] The invention relates to a control circuit, in particular to a switching and stabilizing power supply with low standby power consumption. Background technique [0002] In the field of smart home, the single live wire switch power supply uses a switch in series with the lamp to control the live wire (phase wire), and realizes the direct power supply to the electronic switch, smart switch and super switch installed on the wall without directly connecting the neutral wire. That is, it is directly connected in series with the lamp in the same circuit, and when the lamp is in the "on" and "off" states, the working current or leakage current of the lamp is used to maintain the single live wire power supply of the switch. When the lamp is in the "OFF" state, it must be ensured that the power consumption of the switch is less than <50mW, otherwise there will be a "flashing" phenomenon. [0003] In addition, in the field of household electrical appliances, ...
Claims
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IPC IPC(8): H02M7/217
CPCH02M7/217H02M7/2176H02M1/0054H02M1/0032Y02B70/10
Inventor 钱雨广柳岸呈万岚芳
Owner 广东鉴面智能科技有限公司