Soft start current stabilization circuit based on surge current limiting circuit

A technology for limiting circuit and inrush current, which is applied in the field of soft-start steady current circuit, can solve problems such as long delay time and complex structure of start-up, and achieve the effect of preventing damage and reducing inrush current

Inactive Publication Date: 2018-02-02
CHENGDU SAIPUQI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a soft start current stabilization circuit based on the inrush current limiting circuit, in order to solve the problem that the structures currently used to realize soft start are relatively complicated and the delay time for start is relatively long

Method used

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  • Soft start current stabilization circuit based on surge current limiting circuit
  • Soft start current stabilization circuit based on surge current limiting circuit
  • Soft start current stabilization circuit based on surge current limiting circuit

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Embodiment

[0019] like figure 1 , 2 As shown, the soft start current stabilization circuit based on the inrush current limiting circuit of the present invention is mainly composed of a transformer T, a diode rectifier U, a triode VT4, a capacitor C1, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R6, a resistor R7, a resistor R8, soft start circuit, source constant current drive circuit, inrush current limiting circuit and delay circuit.

[0020] When connected, the anode of the capacitor C1 is connected to the positive output terminal of the diode rectifier U, and its cathode is connected to the negative output terminal of the diode rectifier U. The soft start circuit is respectively connected to the positive pole and the negative pole of the capacitor C1; the positive pole of the capacitor C4 is connected to the soft start circuit, and its negative pole is connected to the negative pole of the capacitor C1 after passing through the inrush current limiting circuit. One end...

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PUM

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Abstract

The invention discloses a soft start current stabilization circuit based on a surge current limiting circuit. The circuit is mainly formed by a transformer T, a diode rectifier U, a triode VT4, a capacitor C1, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R6, a resistor R7, a resistor R8, a soft start circuit, a source constant current driving circuit, the surge current limiting circuit and a time-delay circuit. In the invention, soft start of an electronic product can be realized; after the power is turned on, an output voltage is slowly increased to a given value after a start process so as to protect the electronic product from a surge impact when being started. When the product is started, the circuit of the invention can be used to ensure optimal delay time of about 30 seconds. The circuit is suitable for popularization and utilization.

Description

technical field [0001] The invention relates to a soft start circuit, in particular to a soft start current stabilization circuit based on a surge current limiting circuit. Background technique [0002] With the development of science and technology, electronic technology has developed rapidly, and the types of electronic products have become more and more abundant. Various electronic products have entered the families of ordinary people, making people's daily life inseparable from electronic products. Because the performance of various electronic products is not the same, some electronic products need soft start when they are used, so as to protect the electronic products from the impact of surge when they are started. However, the current structure for realizing soft start is relatively complicated, and the delay time for starting is relatively long, which brings great inconvenience to users. Contents of the invention [0003] The purpose of the present invention is to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/217H02M1/34H02M1/36
CPCH02M1/34H02M1/36H02M7/217H02M1/344
Inventor 余泓德
Owner CHENGDU SAIPUQI TECH CO LTD
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