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Overcurrent detecting apparatus

A detection device and overcurrent technology, which is applied in the field of detection devices, can solve problems such as poor circuit efficiency, and achieve the effect of small circuit and accurate detection of overcurrent

Inactive Publication Date: 2011-04-06
戴枝德
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an overcurrent detection device to solve the problems of poor circuit efficiency in the prior art

Method used

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Embodiment Construction

[0030] Fig. 2 is a schematic diagram of the device circuit of the present invention, the device circuit of the present invention includes a first flyback 14 and a second flyback 16, and receives a first digital signal and a second digital signal at its input terminals respectively, and the two Or vice versa, wherein the first digital signal and the second digital signal can be the same digital signal or different digital signals.

[0031] The output terminals of the first flyback 14 and the second flyback 16 are connected to a complementary metal-oxide-semiconductor transistor 50 for receiving the reversed first digital signal and the second digital signal to drive the load 22. The complementary The MOSFET 50 includes a P-type MOSFET 18 and an N-type MOSFET 20 . The complementary metal-oxide-semiconductor transistor 50 and the output terminals of the first flyback 14 and the second flyback 16 are respectively connected to a comparison circuit 52, and the comparison circuit 52 ...

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PUM

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Abstract

The invention discloses an over current detector, which adopts a first reverse gate and a second reverse gate; reverses a first digital signal and a second digital signal; adopts a compensation gold oxygen semiconductor crystal to receive the reversed signals and drive a load; when the current of the load is over, adopts a comparison circuit to detect the over current on the load to be compared with the reversed first and second digital signals; outputs a first electronic signal and a second electric signal to a first logic gate and a second logic gate; and provides the output signals of the logic gates to a protection circuit to control the current on the load, thereby preventing the whole circuit from being burnt and accident. The over current detector can detect over current accuratelyand effectively, and can be integrated with compensation gold oxygen semiconductor crystals, to save electricity and reduce circuit volume.

Description

technical field [0001] The invention relates to a detection device, in particular to an overcurrent detection device. Background technique [0002] In recent years, integrated circuit technology has become popular, so the application of complementary metal oxide semi-transistor crystals is widely used in various electronic components, such as a class D amplifier for audio signals. This amplifier is a high-efficiency amplifier with only two outputs. A state (1 or 0), often used to drive high-load speakers. Due to the extremely high power conversion efficiency of this amplifier, it has been widely used in portable electronic products in recent years. In this way, the power-saving properties of the amplifier can be used to extend the use time of electronic products and reduce the consumption of large-power batteries. Use opportunities to make electronic products more convenient to carry. [0003] As shown in the prior art shown in FIG. 1 , the general class D amplifier mainly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/165G01R31/28G01R31/02H03K5/24
Inventor 戴枝德
Owner 戴枝德
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