Overcurrent protection circuit and power supply circuit
An overcurrent protection circuit, power signal technology, applied in emergency protection circuit devices, electrical components and other directions, can solve the problems of power circuit damage, circuit impact, etc.
Active Publication Date: 2021-01-19
ZHEJIANG UNIVIEW TECH
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- Description
- Claims
- Application Information
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Problems solved by technology
[0004] However, in the actual use of the power circuit, the circuit connected to the signal input terminal Vin' is often affected by the short circuit at the signal output terminal Vout', which will seriously damage the power circuit.
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[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0044] figure 2 For a schematic structural diagram of an overcurrent protection circuit provided by an embodiment of the present invention, see figure 2, the overcurrent protection circuit includes: a first voltage stabilizing module 10, a second voltage stabilizing module 20, a control module 30 and a switch module 40; The input terminal of the first voltage stabilizing module 10 is connected to the first input terminal of the control module 30, and the ground terminal of the first voltage stabilizing module 1...
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The invention discloses an overcurrent protection circuit and a power supply circuit. The overcurrent protection circuit comprises a first voltage stabilization module, a second voltage stabilizationmodule, a control module and a switch module, wherein the input end of the first voltage stabilization module is connected with the power supply signal supply end and the input end of the switch module, the output end of the first voltage stabilization module is connected with the first input end of the control module, and the grounding end of the first voltage stabilization module is grounded; the first input end of the second voltage stabilizing module is connected with the power supply signal output end; the second input end of the second voltage stabilizing module is connected with the output end of the power supply control circuit; the output end of the second voltage stabilizing module is connected with the second input end of the control module, and the grounding end of the second voltage stabilizing module is grounded; the output end of the control module is connected with the control end of the switch module; the output end of the switch module is connected with the input endof the power supply control circuit, and the grounding end of the switch module is grounded. The overcurrent protection circuit provided by the embodiment of the invention realizes the effect of effectively protecting the power supply circuit.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of protection, in particular to an overcurrent protection circuit and a power supply circuit. Background technique [0002] A power supply circuit is a circuit that supplies power to switching circuits or step-down devices. With the rapid development of power electronics technology, the relationship between electronic equipment and people's work and life is becoming increasingly close, and electronic equipment cannot be separated from reliable power circuits. [0003] figure 1 It is a circuit diagram of a power supply circuit in the prior art, see figure 1 The first voltage input by the signal input terminal Vin' is processed by the power control circuit 50' and converted into a second voltage, and the second voltage is output through the signal output terminal Vout', thereby providing a second voltage for the electronic equipment connected to the signal output terminal Vout'. Vo...
Claims
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Login to View More IPC IPC(8): H02H7/12
CPCH02H7/1213
Inventor 刘猛冯声威
Owner ZHEJIANG UNIVIEW TECH