CN201130212Y - Vehicle test pen circuit - Google Patents
Vehicle test pen circuit Download PDFInfo
- Publication number
- CN201130212Y CN201130212Y CNU2007200296523U CN200720029652U CN201130212Y CN 201130212 Y CN201130212 Y CN 201130212Y CN U2007200296523 U CNU2007200296523 U CN U2007200296523U CN 200720029652 U CN200720029652 U CN 200720029652U CN 201130212 Y CN201130212 Y CN 201130212Y
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- CN
- China
- Prior art keywords
- diode
- voltage regulator
- voltage
- series
- voltage stabilizing
- 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
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model relates to an electroscope circuit of the automobile for detecting electrification states of direct current electrical appliances, which adopts the technical proposal that: a probe is connected in series with at least two voltage regulator diodes with homopolar arrangement; a diode with an opposite polarity is connected in series between a first and a second voltage regulator diode at the rear of the probe; both ends of the second voltage regulator diode and following voltage regulator diodes are connected in series with resistors and light emitting diodes in sequence, and then connected in parallel with grounding ends. In order to facilitate uses under the condition of different voltages, the technical proposal is improved into that: both ends of the first voltage regulator diode are connected in parallel with one or more different voltage regulator diodes with different voltage withstanding parameters, and then are connected with a diode through a toggle switch. The electroscope circuit of the automobile for detecting electrification states of direct currents has the advantages of simple structure and easy manufacture, and applicability to voltage ranges as 12V, 24V, and 36V. In addition, with the electroscope circuit, the voltage values of the batteries can be roughly measured.
Description
Technical field
The utility model relates to a kind of automobile electroscope circuit that detects the dc electric apparatus electriferous state.
Background technology
Present electroscope mostly is the interchange electroscope, and in motor repair trade, circuit and electrical equipment are the direct current mode, and original like this interchange electroscope just can not be satisfied the demand.
Summary of the invention
The purpose of this utility model is exactly the defective that exists at prior art, provide a kind of simple in structure, can satisfy the automobile electroscope circuit that uses under the DC condition.
Its technical scheme is: the voltage stabilizing diode that 2 above same polarities of probe series connection are arranged, between the 1st voltage stabilizing diode behind the probe and the 2nd voltage stabilizing diode, be in series with 1 opposite polarity diode, behind the 2nd voltage stabilizing diode and all voltage stabilizing diode two ends thereafter resistance in series successively and light emitting diode, be parallel-connected to earth terminal.
Different voltage conditions use down for convenience, and such scheme is improved to: be parallel with the voltage stabilizing diode of other 1 or several the withstand voltage parameter of difference at the two ends of the 1st voltage stabilizing diode, and be connected on the diode by toggle switch.
The utlity model has simple in structurely, easy to make, it is applicable to 12V, 24V, voltage ranges such as 36, and can the bigness scale battery voltage value.
Description of drawings
Accompanying drawing is the circuit theory diagrams of a kind of embodiment.T is a probe among the figure; G is a ground terminal;
Embodiment
Be further described with principle of work with regard to its circuit formation below in conjunction with accompanying drawing: voltage stabilizing diode DW1, DW2 are connected toggle switch K and form 12V, 24V voltage conversion circuit; Diode D forms polarity control circuit; Voltage stabilizing diode DW3, DW4, DW5, DW6 are composed in series voltage-dividing detection circuit; Resistance R 1, R2, R3, R4, R5 connect LED 1, LED2, LED3, LED4, LED5 respectively and form voltage display circuit.
Can measure the automobile circuit that level voltage is 12V when toggle switch K places the 12V shelves, with ground terminal G ground connection, T removes detection circuit with probe, opens circuit as the measured point, then LED1---and LED5 is all not luminous; When measured point voltage was 10V, then LED1 was luminous, and when measured point voltage was 11V, then LED1, LED2 were simultaneously luminous, and the rest may be inferred.When placing the 24V shelves, can measure toggle switch K the automobile circuit that level voltage is 24V.
Claims (2)
1, a kind of automobile electroscope circuit, it is characterized in that: the voltage stabilizing diode that 2 above same polarities of probe series connection are arranged, between the 1st voltage stabilizing diode behind the probe and the 2nd voltage stabilizing diode, be in series with 1 opposite polarity diode, behind the 2nd voltage stabilizing diode and all voltage stabilizing diode two ends thereafter resistance in series successively and light emitting diode, be parallel-connected to earth terminal.
2, automobile electroscope circuit according to claim 1 is characterized in that: be parallel with the voltage stabilizing diode of other 1 or several the withstand voltage parameter of difference at the two ends of the 1st voltage stabilizing diode, and be connected on the diode by toggle switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200296523U CN201130212Y (en) | 2007-10-25 | 2007-10-25 | Vehicle test pen circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200296523U CN201130212Y (en) | 2007-10-25 | 2007-10-25 | Vehicle test pen circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201130212Y true CN201130212Y (en) | 2008-10-08 |
Family
ID=40018074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200296523U Expired - Fee Related CN201130212Y (en) | 2007-10-25 | 2007-10-25 | Vehicle test pen circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201130212Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652060A (en) * | 2014-11-13 | 2016-06-08 | 陈剑民 | Electric sprayer special-purpose voltmeter circuit |
-
2007
- 2007-10-25 CN CNU2007200296523U patent/CN201130212Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652060A (en) * | 2014-11-13 | 2016-06-08 | 陈剑民 | Electric sprayer special-purpose voltmeter circuit |
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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: 20081008 Termination date: 20091125 |