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Overcurrent protection circuit and lamp

An overcurrent protection circuit and lamp technology, which is applied in the protection of overcurrent response, electric lamp circuit arrangement, electric light source, etc., can solve the problems of complex structure and high cost of overcurrent protection circuit, and achieve simple structure and low cost. Effect

Inactive Publication Date: 2012-11-14
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an overcurrent protection circuit, which aims to solve the problems of complex structure and high cost in the current overcurrent protection circuit

Method used

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  • Overcurrent protection circuit and lamp
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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, 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, not to limit the present invention.

[0015] figure 1 The circuit structure of the overcurrent protection circuit provided by the first embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows.

[0016] The overcurrent protection circuit is connected between the power supply and the electric load. The overcurrent protection circuit includes:

[0017] Voltage regulator tube D1, voltage divider resistor R1, voltage divider resistor R2, voltage divider resistor R3, voltage divider resistor R4, voltage divid...

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Abstract

The invention is applicable for the field of protection circuits, and particularly relates to an overcurrent protection circuit and a lamp. According to the embodiment of the invention, the overcurrent protection circuit is formed by discrete components; when the load current is greater than a designed overcurrent protection current value, a load power supply loop can be switched off rapidly to fulfill the aim of load overcurrent protection; and moreover, the overcurrent protection circuit is simple in structure and low in cost.

Description

technical field [0001] The invention belongs to the field of protection circuits, in particular to an overcurrent protection circuit and a lamp. Background technique [0002] Electric energy is closely related to our life. The normal operation of various electronic products such as electronic equipment and electronic instruments is inseparable from electric energy, but each electronic product has a rated operating current. If the operating current is too large, it will be in an abnormal state. In the working state, the circuit needs to be protected, otherwise electronic products such as equipment and instruments will be damaged. [0003] The current overcurrent protection circuit generally adopts single-chip microcomputer to sample current and output control. Although the single-chip microcomputer control has the advantages of high efficiency and flexible application, the single-chip microcomputer needs to cooperate with various devices such as reference source and sampling ...

Claims

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Application Information

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IPC IPC(8): H02H3/08H05B37/02
Inventor 周明杰孙占民
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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