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Alternating-current voltage detection circuit and electronic equipment

An AC voltage, detection circuit technology, applied in the direction of measuring current/voltage, only measuring voltage, measuring device, etc., can solve the problem of large installation space, and achieve the effect of small occupied space and saving installation space

Active Publication Date: 2020-10-02
DREAM INNOVATION TECH (SUZHOU) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The application provides an AC voltage detection circuit and electronic equipment, which can solve the problem of large installation space occupied by transformers used in the existing AC voltage detection circuit for AC-DC conversion

Method used

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  • Alternating-current voltage detection circuit and electronic equipment

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Embodiment Construction

[0035] The specific implementation manners of the present application will be further described in detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0036] figure 1 It is a schematic structural diagram of an AC voltage detection circuit provided by an embodiment of the present application, such as figure 1 As shown, the AC voltage detection circuit at least includes: a voltage input terminal 1 , a RC step-down half-wave rectification circuit 2 and a voltage detection circuit 3 .

[0037] The voltage input terminal 1 is used to input the alternating current to be detected. The voltage input terminal includes a first terminal 11 and a second terminal 12 .

[0038] In an example, the AC voltage is a mains voltage, and the mains voltage may be an alternating current with an alternating voltage (or effective voltage) of 220 volts (V).

[0...

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Abstract

The invention relates to an alternating-current voltage detection circuit and electronic equipment, and belongs to the technical field of voltage detection. The alternating-current voltage detection circuit comprises: a voltage input end which is used for inputting a to-be-detected alternating-current and comprises a first end and a second end; a resistance-capacitance voltage reduction half-waverectification circuit connected with the voltage input end; a voltage detection circuit connected with the resistance-capacitance voltage reduction half-wave rectification circuit in parallel and comprising a first diode, wherein the positive electrode of the first diode is connected with the second end of the voltage input end; a voltage division circuit connected with the negative electrode of the first diode; and a voltage detection chip which comprises a voltage input interface, a grounding interface and a voltage detection interface, wherein the voltage input interface is connected with the resistance-capacitance voltage reduction half-wave rectification circuit, the grounding interface is connected with the voltage reference point, and the voltage detection interface is connected with the voltage division circuit. The problem that an existing alternating-current voltage detection circuit occupies a large installation space can be solved. The installation space of the alternating-current voltage detection circuit can be saved.

Description

technical field [0001] The application relates to an AC voltage detection circuit and electronic equipment, belonging to the technical field of voltage detection. Background technique [0002] With the development of electronic power technology, more and more electrical appliances (such as hair dryers, refrigerators, etc.) are widely used in daily life. Voltage detection to protect electrical appliances. [0003] The traditional mains voltage detection scheme includes: converting the mains voltage to AC and DC through a transformer to obtain direct current, and detecting changes in the voltage value of the direct current, so as to realize the detection of the mains voltage. [0004] However, the transformer usually needs to occupy a large installation space, which leads to an increase in the installation space of the devices on which the voltage detection circuit is installed. Contents of the invention [0005] The present application provides an AC voltage detection cir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R19/2503G01R19/2509Y02B70/10
Inventor 黄家根陈兵
Owner DREAM INNOVATION TECH (SUZHOU) CO LTD
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