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Energy-saving switch power supply with self-locking function

An energy-saving switch and power supply technology, applied in the direction of output power conversion devices, electrical components, high-efficiency power electronics conversion, etc., can solve the problems of load damage, single function of switching power supply, and inability to protect voltage, so as to save electric energy and have a wide range of applications , Ease of use

Pending Publication Date: 2017-05-24
HARBIN UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

[0003] The existing switching power supply has a single function and cannot provide certain protection against abnormal voltage conditions, resulting in damage to the load

Method used

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  • Energy-saving switch power supply with self-locking function
  • Energy-saving switch power supply with self-locking function

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Embodiment Construction

[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] see figure 1 , 2 , an energy-saving switching power supply with self-locking function, including a DC power supply circuit and a switch control circuit, the switch S1, the switch S2, the resistor R2, the relay K and the triode V1, one end of the key switch S1 is connected to the resistor R1, the relay The contact K-1 of K, the key switch S2 and the power supply U1, the other end of the switch S1 is connected to the other end of the contact K-1 of the r...

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PUM

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Abstract

The invention discloses an energy-saving switch power supply with a self-locking function. The energy-saving switch power supply comprises a direct-current power supply circuit, a switch control circuit, a switch S1, a switch S2, a resistor R2, a relay K and a triode V1, wherein one end of the button switch S1 is connected witha resistor R1, a contact K-1 of the relay K, the button switch S2 and a power supply U1; the other end of the switch S1 is connected with the other end of the contact K-1 of the relay K, a collector electrode of the triode V1 and a base electrode of a triode V2; a collector electrode of the triode V2 is connected with the other end of the resistor R1 and the relay K; the other end of the relay K is connected with a collector electrode of the triode V3. According to the energy-saving switch power supply with the self-locking function provided by the invention, the design of a PCB (Printed Circuit Board) circuit in the switch power supply is improved, and the self-locking function is realized by utilizing self contacts of the relay, so that the circuits have no static power consumption when being mis-triggered, and are applicable to alternating-current and direct-current loads so as to have the advantages of electric energy conservation, wide application range, and convenience in use.

Description

technical field [0001] The invention relates to a switching power supply, in particular to an energy-saving switching power supply with a self-locking function. Background technique [0002] Switching power supply is a kind of power supply that uses modern power electronic technology to control the time ratio of switching on and off to maintain a stable output voltage. Switching power supply is generally composed of pulse width modulation (PWM) control IC and MOSFET. With the development and innovation of power electronics technology, switching power supply technology is constantly innovating. At present, switching power supply is widely used in almost all electronic devices due to its small size, light weight and high efficiency. It is an indispensable power supply method for the rapid development of today's electronic information industry. [0003] The existing switching power supply has a relatively single function and cannot provide certain protection against abnormal v...

Claims

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Application Information

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IPC IPC(8): H02M1/00
CPCH02M1/00H02M1/0003H02M1/0006H02M1/0048Y02B70/10
Inventor 姜艳姝徐兴
Owner HARBIN UNIV OF SCI & TECH
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