CN201749181U - Simple polarity tester - Google Patents

Simple polarity tester Download PDF

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Publication number
CN201749181U
CN201749181U CN 201020516803 CN201020516803U CN201749181U CN 201749181 U CN201749181 U CN 201749181U CN 201020516803 CN201020516803 CN 201020516803 CN 201020516803 U CN201020516803 U CN 201020516803U CN 201749181 U CN201749181 U CN 201749181U
Authority
CN
China
Prior art keywords
light emitting
diode
shell
variable resistor
socket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201020516803
Other languages
Chinese (zh)
Inventor
陈凤枝
Original Assignee
陈凤枝
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 陈凤枝 filed Critical 陈凤枝
Priority to CN 201020516803 priority Critical patent/CN201749181U/en
Application granted granted Critical
Publication of CN201749181U publication Critical patent/CN201749181U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses simple polarity tester, comprising a cylindrical shell. The two ends of the shell is provided with sockets, the outer wall of the shell is provided with two diode head pores, and a variable resistor knob is installed on the outer wall of the shell. The socket at one end is connected with a combined light emitting diode in series, and then is connected with a variable resistor, a fuse and the socket at the other end in series. The combined light emitting diode is formed by connecting two light emitting diodes with opposite polarities in parallel to combine the two light emitting diodes. The tester can quickly judge the polarity of a tested circuit, has simple structure and low price, is convenient to manufacture, and is very suitable for an automatic production line of an enterprise to detect and repair various low electrical appliances.

Description

Simple and easy polarity test device
Technical field
The utility model relates to a kind of electrical measuring device, particularly a kind of simple and easy polarity test device.
Background technology
Usual electrical repair personnel usually need to judge the polarity of power supply when carrying out plant maintenance, inspection or repairing, the height of 2 current potentials and electric current are to exchange or direct current in the circuit.The general test pen overlap joint both ends of power that adopts avometer uses avometer to differentiate and needs frequent gear shift, and is unfavorable to multimeter like this, because the gear shift meeting causes indicator acutely to rotate, sometimes even can cause indicator to bend or gauge outfit is burnt out.
The utility model content
The purpose of this utility model provides a kind of simple and easy polarity test device, solves the technical matters of using avometer test circuit polarity to exist indicator to bend easily and burn out gauge outfit at present.
To achieve these goals, the technical solution adopted in the utility model is such: a kind of simple and easy polarity test device, comprise cylindrical housings, the housing two ends are equipped with socket, have two diode head holes on the outer wall, and the variable resistor knob is installed, end socket serial connection illuminated in combination diode is connected in series with variable resistor, fuse and other end socket then; The illuminated in combination diode is to be combined into by two opposite polarity light emitting diode parallel connections.
Compared with prior art, the beneficial effects of the utility model are: can judge the polarity of surveying circuit-under-test rapidly.And simple in structure, easy to make, cheap, be highly suitable on the automatic assembly line of enterprise, use when detecting, repairing various low electrical equipment.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a circuit diagram of the present utility model;
Fig. 3 is a kind of user mode figure of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1 to Fig. 3, simple and easy polarity test device of the present utility model, comprise cylindrical housings 3, housing 3 two ends are equipped with socket 1, have two diode head holes 2 on the outer wall, and variable resistor knob 4, one end sockets serial connection illuminated in combination diode is installed, be connected in series with variable resistor, fuse and other end socket then; The illuminated in combination diode is to be combined into by two opposite polarity light emitting diode parallel connections.
During use, test pen rod 5 is inserted on the socket 1 at housing 3 two ends, be that 5 pairs of power supplys of available test pen rod are tested, the 2 luminous situations of observing light emitting diode are judged the polarity of surveying circuit-under-test rapidly from diode head hole, the resistance of ifs circuit is too small, and adjustable variable resistance knob 4 reduces the internal resistance of tester.The scope of electric circuit inspection voltage is 36 volt-amperes below the full voltage, must the general voltage range of understanding circuit-under-test during use.Certainly, with 5 tests of test pen rod the time, how to determine that terminal voltage height, should see that two light emitting diodes are those luminous or that is luminous strong, this can stipulate from the color or the position of light emitting diode, not repeat them here.

Claims (1)

1. simple and easy polarity test device, comprise cylindrical housings (3), housing (3) two ends are equipped with socket (1), have two diode head holes (2) on the outer wall, and variable resistor knob (4) is installed, it is characterized in that: an end socket (1) serial connection illuminated in combination diode is connected in series with variable resistor, fuse and other end socket (1) then; The illuminated in combination diode is to be combined into by two opposite polarity light emitting diode parallel connections.
CN 201020516803 2010-09-04 2010-09-04 Simple polarity tester Expired - Fee Related CN201749181U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201020516803 CN201749181U (en) 2010-09-04 2010-09-04 Simple polarity tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201020516803 CN201749181U (en) 2010-09-04 2010-09-04 Simple polarity tester

Publications (1)

Publication Number Publication Date
CN201749181U true CN201749181U (en) 2011-02-16

Family

ID=43583857

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201020516803 Expired - Fee Related CN201749181U (en) 2010-09-04 2010-09-04 Simple polarity tester

Country Status (1)

Country Link
CN (1) CN201749181U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108680821A (en) * 2018-05-28 2018-10-19 天津市捷威动力工业有限公司 A kind of novel tooling circuit applied to BMS detections

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108680821A (en) * 2018-05-28 2018-10-19 天津市捷威动力工业有限公司 A kind of novel tooling circuit applied to BMS detections
CN108680821B (en) * 2018-05-28 2020-12-08 天津市捷威动力工业有限公司 Be applied to novel frock circuit that BMS detected

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110216

Termination date: 20110904