Instantaneous voltage detetion circuit

An instantaneous voltage, detection circuit technology, applied in circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, measuring current/voltage, etc., can solve problems such as inability to ensure electrical characteristics

Inactive Publication Date: 2006-03-08
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, once a transient voltage occurs, it is necessary to quote or refer to the components of the power port of the electronic system, so as not to ensure that the original electrical characteristics are still maint...

Method used

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  • Instantaneous voltage detetion circuit
  • Instantaneous voltage detetion circuit
  • Instantaneous voltage detetion circuit

Examples

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Embodiment Construction

[0028] The invention provides an instantaneous voltage detection circuit for detecting an instantaneous voltage for an electronic system. The electronic system is a typical electronic system, such as an integrated circuit, which has a power supply port and a ground port. The instantaneous voltage detection circuit according to the present invention is suitable for detecting the positive instantaneous voltage and the negative instantaneous voltage occurring at the power supply port of the general electronic system (integrated circuit), and the positive instantaneous voltage occurring at the grounding port of the general electronic system. Voltage, negative instantaneous voltage. The following will clearly point out the spirit and characteristics of the present invention by describing several preferred specific embodiments of the present invention in detail.

[0029] First preferred embodiment

[0030] see figure 1 , discloses the basic structure of the instantaneous voltage ...

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PUM

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Abstract

This invention provides a instantaneous voltage detection circuit for electronic system containing power supply and grounding socket, said circuit containing a capacitance device, a rectification component, a preset resistance element and a detection element, wherein the capacitance device containing a first end coupling to a grounding socket of an electronic system and a second end series coupling to power supply socket through rectification component whose positive operation direction pointed to said capacitance device. When the instantaneous voltage occurs in power supply socket and the voltage in second end of said capacitance device is higher than threshold voltage, the detection element outputting a voltage to represent the generation of said instantaneous voltage.

Description

technical field [0001] The invention relates to a transient voltage detecting circuit, which is used for detecting a transient voltage for an electronic system. And in particular, the present invention relates to such an instantaneous voltage detection circuit, in which each element in the instantaneous voltage detection circuit according to the present invention does not need to quote or refer to the power port (Power port) of the electronic system, thus, once the instantaneous voltage When it occurs, each element in the instantaneous voltage detection circuit according to the present invention still maintains the original electrical characteristics, and then detects the instantaneous voltage rapidly and accurately. Background technique [0002] General electronic systems, especially integrated circuits, will take self-protection measures against unwanted instantaneous voltages such as Surge, Glitch, Overvoltage, etc. Lead to operational errors, or even crashes, or compone...

Claims

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Application Information

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IPC IPC(8): G01R19/00H02H9/00
Inventor 周国煜
Owner NOVATEK MICROELECTRONICS CORP
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