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Ac detection circuit and operating method thereof

A detection circuit and AC detection technology, applied in the field of AC detection circuits, can solve the problem of not disclosing the overall circuit response speed, etc.

Inactive Publication Date: 2014-06-18
SAMSUNG ELECTRO MECHANICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, neither of the cited inventions 1 and 2 discloses a configuration that improves the response speed of the overall circuit by excluding the influence of the DC component on the generation of the AC detection signal

Method used

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  • Ac detection circuit and operating method thereof
  • Ac detection circuit and operating method thereof
  • Ac detection circuit and operating method thereof

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail. However, this invention may be embodied in many different forms and therefore should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the shapes and dimensions of elements may be exaggerated for clarity, and the same reference numerals will be used throughout to designate the same or like parts.

[0031] figure 1 is a schematic block diagram of an alternating current (AC) detection circuit according to an embodiment of the present invention.

[0032] refer to figure 1 , the AC detection circuit 100 according to the embodiment of the present invention may include a power supply unit 110 , a rectification unit 120 , a filter unit 130 , and a detection circuit unit 140 . The power supply unit 110 can output...

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Abstract

There are provided an alternating current (AC) detection circuit and an operating method thereof. The AC detection circuit includes: a power supply unit outputting an AC signal; a filter unit connected to the power supply unit to block a serial signal component; and a detection circuit unit including at least one switching element turned on or turned off according to an output signal from the filter unit, and detecting whether the AC input signal has been input according to an operation of the at least one switching element.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2012-0148254 filed with the Korean Patent Office on December 18, 2012, the disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates to an alternating current (AC) detection circuit, wherein a filter part for blocking a direct current (DC) component is arranged between an alternating current power supply part outputting an alternating current signal and a circuit for detecting whether an alternating current signal is input , thereby improving responsiveness and the way it operates. Background technique [0004] An alternating current (AC) detection circuit is a circuit that generates output signals having different levels when an alternating current voltage is applied to a switched mode power supply (SMPS) and when the application of the alternating current voltage is blocked. The AC detection c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R1/30G01R19/0015
Inventor 吴成勋李元永金孝溁
Owner SAMSUNG ELECTRO MECHANICS CO LTD