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Circuit device for eliminating signal leakage

A circuit device and signal elimination technology, applied in the direction of electrical components, electronic switches, pulse technology, etc., can solve the problems of high cost and waste, and achieve the effect of eliminating and reducing costs

Inactive Publication Date: 2008-12-24
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the cost of IC is generally relatively high, and sometimes it is only necessary to isolate a few leakage signal lines in the design, so using IC to deal with it will cause waste

Method used

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  • Circuit device for eliminating signal leakage
  • Circuit device for eliminating signal leakage
  • Circuit device for eliminating signal leakage

Examples

Experimental program
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Effect test

Embodiment Construction

[0011] Such as figure 2 Shown is a schematic diagram of the implementation environment of the present invention. In the embodiment provided by the present invention, a leakage elimination circuit 3 is provided between the A system 1 and the B system 2 to eliminate the leakage in the signal from the A system 1. The signal with leakage output from the A system 1 can be eliminated by the leakage elimination circuit 3.

[0012] Such as image 3 As shown, is figure 2 Schematic diagram of the medium leakage elimination circuit. In the present invention, the switching characteristics of Field-Effect Transistor (FET) are used to eliminate leakage current, instead of using a transistor (Transistor), because the transistor is a flow control component. If a transistor is used, it may be due to leakage current. Misoperation occurs due to the reason. The FET is a voltage-controlled component, so it will not be affected by the input of leakage current. In the embodiment of the present inventio...

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PUM

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Abstract

The invention relates to a circuit device to eliminate electric leakage in signal that includes at least one circuit unit of electric leakage eliminating. The circuit unit comprises a MOSFET whose source is connected to the signal line carrying electric leakage and its gating connects to the DC power supply through a resistence, the draw outputs the signal that has eliminates electric leakage. Using the invention could decrease the cost to eliminate electric leakage and ensure the function of original signal line.

Description

【Technical Field】 [0001] The invention relates to a circuit device for eliminating current leakage in a signal, in particular to a circuit device for eliminating current leakage in a signal by using a field effect transistor. 【Background technique】 [0002] In digital circuit design, the problem of electric leakage has always existed, such as figure 1 Shown is a schematic diagram of signal transmission with leakage current. Because there is a leakage current in A system 1, it will be transmitted to B system 2 through the transmission line. These leakage currents will cause unnecessary noise in the signal transmitted to B system 2, or due to the electromagnetic effect of leakage, causing B Misoperation of system 2. [0003] In order to eliminate these leakage currents, a specially designed IC is generally required; or a general-purpose IC (such as 7404, etc.) used to isolate the leakage current is used to isolate the leakage current and maintain the original signal. However, beca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/687
Inventor 谢明志
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD