CN2260738Y - Electric detector of automobile - Google Patents
Electric detector of automobile Download PDFInfo
- Publication number
- CN2260738Y CN2260738Y CN 96213850 CN96213850U CN2260738Y CN 2260738 Y CN2260738 Y CN 2260738Y CN 96213850 CN96213850 CN 96213850 CN 96213850 U CN96213850 U CN 96213850U CN 2260738 Y CN2260738 Y CN 2260738Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- detector according
- voltage
- resistance
- detector
- 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
Links
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model relates to an instrument used for carrying out detection for automobile circuits. The utility model can carry out measurement for voltage and resistance and measured values are displayed by a luminous diode set. A voltage measuring circuit is connected with the luminous diode set and a driver I< c 1 > after connected with a voltage stabilizing circuit and is connected in parallel with a sound display circuit composed of a buzzer FM< 1 > and a self-flashing luminous tube ZL. A resistance measuring circuit is connected with a battery pack, a buzzer FM< 2 > and a sound optics measurement display circuit for the luminous diode LED after connected with a misoperation protective circuit composed of a controlled silicon CR, a triode BG< 2 > and a voltage stabilizing tube DW< 3 >. The utility model has the advantages of simple structure, protective function and little possibility of damage, and the battery pack can be automatically charged during the time of voltage measurement.
Description
The utility model relates to a kind of circuit test device, especially the device that automobile circuit is detected.
Along with auto-industry development with rapid changepl. never-ending changes and improvements, its electric system gets up complicated more, but also there is not corresponding automobile specified instrumentation in the market, as use the shelves of direct voltage of multi-meter, require repairman's choosing to gear, positive and negative electrode can not reversal connection, otherwise is easy to damage multi-meter, the multi-meter volume is very much not portable in addition, and aseismicity is poor.For simple and convenient, the automobile repair personnel usually use the school electric light promptly a bulb checked no-voltage, but can't measure magnitude of voltage, function singleness, also thorough other electrical property values on the measured automobiles.Chinese patent CN2194515Y discloses a kind of ＂ multi-purpose vehicle(MPV) apparatus failure detector ＂, is to demonstrate tested magnitude of voltage by digital display meter, does not have safety method in the circuit of this detector, can cause the damage of instrument when operator's mistake retaining, misconnection.
The purpose of this utility model is to obtain a kind of auto electric instrumentation, can carry out voltage, measurement of resistance, has the fault-operation protection function, and is simple in structure.
The purpose of this utility model is achieved in that
A kind of auto electric detector is to show the magnitude of voltage of being surveyed by light-emitting diode group, and the probe positive pole of this detector is connected to voltage, measurement of resistance conversion shift switch K
2, tension measuring circuit comprises: be connected with light-emitting diode group and actuator I thereof behind mu balanced circuit
C1, and with buzzer phone FM
1And/or the apparent circuit parallel connection of forming from shwoot light pipe ZL of sound, resistance measuring circuit comprises: via silicon control CR, aerotron BG
2, stabilivolt DW
3Behind the fault-operation protection circuit of forming, be connected to by battery pack E, buzzer phone FM
2And/or the resistance measuring circuit of LED composition.
Mu balanced circuit is by comprising aerotron BG
1, stabilivolt DW
1, resistance R
2The low pressure mu balanced circuit and the three terminal regulator I that form
C2Compose in parallel.
The fault-operation protection circuit is by stabilivolt DW
3Positive pole and aerotron BG
2Base stage join BG
2Collecting electrode and the trigger electrode of silicon control CR join the negative electrode of CR and BG
2Emitter link to each other.
Between tension measuring circuit via diode D
2, resistance R
3Charge circuit of forming and the positive pole of battery pack E join.
LED drive I
C1Sampling hold 5 pin to be connected to potential device W.
LED drive I
C19 pin be connected to K switch
1
Be parallel with capacitor C between the trigger electrode of silicon control CR, negative electrode
4
Shift switch K
2After be connected to diode D
1
Buzzer phone FM
1With connect from shwoot light pipe ZL.
Buzzer phone FM
2In parallel with LED.
Below in conjunction with accompanying drawing in detail embodiment of the present utility model is described in detail.
Accompanying drawing is the circuit diagram of the utility model embodiment.
Referring to accompanying drawing, the circuit of this detector is divided into voltage measurement and measurement of resistance two parts, and anodal IN is connected to shift switch K in detector probe
2, work as K
2Placing at 1 o'clock is tension measuring circuit, diode D
1Be reverse connecting protection, through stabilivolt DW
2Step-down, three terminal regulator I
C2Give led driver I after the voltage stabilizing
C1Power supply.By I
C2, C
1, DW
2, BG
1, DW
1, R
2The bistable volt circuit of forming is by two parts parallel connection, promptly by aerotron BG
1, resistance R
2, stabilivolt DW
1The low pressure mu balanced circuit and the I that form
C2Parallel connection makes led driver I
C1Can be 3～29 volts of normal operation.By light-emitting diode group (LED * 10) and actuator I thereof
C1, resistance R
1, K switch
1, potential device W forms level grade telltale, the magnitude of voltage that records carries out voltage by light-emitting diode group LED and shows every voltage gradation 2.5V.I
C19 pin be connected to K switch
1, can select display mode, work as K
1Be that bar shows that promptly the luminotron from first to the relevant voltage value is bright all when opening; K
1Close Shi Weidian and show to have only that luminotron of relevant voltage value bright.I
C1Sampling hold 5 pin to be connected to potential device W, can correct the demonstration deviation, carry out full frame scope adjustment, make it in 3～28 volts of scopes.Light-emitting diode group (LED * 10) and miniature buzzer phone FM
1Parallel connection is by FM
1, C
2, ZL forms intermittently buzzing flasher circuit, C
2Be filter capacitor, ZL is from shwoot light pipe and FM
1Series connection is not only done oscillation source but also do the flash of light demonstration.
Work as K
2Placing at 2 o'clock is resistance measuring circuit, by FM
2, C
3, LED, R
4, DW
3, R
5, R
7, C
R, C
4, R
6, BG
2, E forms active metering circuit, LED and R
4For light shows, FM
2For sound shows, C
3Be filter capacitor, its measurement of resistance is to estimate its numerical values recited according to the brightness of sound size and light-emitting diode, but measuring diode is forward and reverse, capacitance, circuit on-off etc.By CR, C
4, R
7, BG
2, R
5, R
6, DW
3Form the fault-operation protection circuit, when the probe positive pole connect positive voltage, silicon control CR was a reverse blocking state, and protective circuit is not worked.And connect instead when the probe positive and negative electrode, anodal IN connect negative voltage (＞3VDC), when ground terminal GND connect positive voltage, the voltage of external voltage and battery pack E superposeed, stabilivolt DW
3Conducting is through R
5Current limliting makes BG
2Rapidly conducting, the trigger electrode voltage of CR and cathode voltage about equally, CR ends, the protection acousto-optic shows that the measurement power circuit is not subjected to impacting with high pressure, C
4Be anti-interference capacitor, R
7Trigger electrode current-limiting resistance for CR.When IN end does not have voltage but when a kind of part such as coil, lead, the electric current of battery pack is through FM
2, R
4With LED from R
7Make the CR conducting, R
6Be BG
2Biasing resistor, CR conducting after-current is through K
2, IN end constitutes the loop through part, GND end with battery E, acousto-optic shows metering circuit work.
By diode D
2, resistance R
3The charge circuit of forming is to have the part electric current to give battery pack E charging automatically when measuring voltage.
Compared with prior art, the utility model can adapt to basic the wanting that auto electric is measured Ask, and only have active, passive two gears, simple to operate, volume is little, is easy to carry. In circuit, strengthened the functions such as power protection, reverse connecting protection, impacting with high pressure protection, made this Detector is not fragile, and the electric energy during active the measurement constantly fills battery when leaning on passive measurement Electricity need not often be changed battery. Night be with can showing to identify from sound, light display, convenient, Fast, voltage range is 5～29 volts, can measure from motorcycle to high capacity waggon electrical equipment electricity Press.
Claims (10)
1. an auto electric detector is to show the magnitude of voltage of being surveyed by light-emitting diode group, it is characterized in that: the probe positive pole of this detector is connected to voltage, measurement of resistance conversion shift switch K
2, its tension measuring circuit comprises: be connected with light-emitting diode group and actuator I thereof behind mu balanced circuit
C1, and with buzzer phone FM
1And/or the sound display circuit parallel connection of forming from shwoot light pipe ZL, its resistance measuring circuit comprises: via silicon control CR, aerotron BG
2, stabilivolt DW
3Behind the fault-operation protection circuit of forming, be connected to by battery pack E, buzzer phone FM
2And/or the resistance measuring circuit of LED composition.
2. detector according to claim 1 is characterized in that: described mu balanced circuit is by comprising aerotron BG
1, stabilivolt DW
1, resistance R
2The low pressure mu balanced circuit and the three terminal regulator I that form
C2Compose in parallel.
3. detector according to claim 1 is characterized in that: described fault-operation protection circuit is by stabilivolt DW
3Positive pole and aerotron BG
2Base stage join BG
2Collecting electrode and the trigger electrode of silicon control CR join the negative electrode of CR and BG
2Emitter link to each other.
4. detector according to claim 1 is characterized in that: between tension measuring circuit via diode D
2, resistance R
3Charge circuit of forming and the positive pole of battery pack E join.
5. detector according to claim 1 is characterized in that: described LED drive I
C1Sampling hold 5 pin to be connected to potential device W.
6. detector according to claim 1 is characterized in that: described LED drive I
C19 pin be connected to K switch
1
7. detector according to claim 3 is characterized in that: be parallel with capacitor C between the trigger electrode of described silicon control CR, negative electrode
4
8. detector according to claim 1 is characterized in that: described shift switch K
2After be connected to diode D
1
9. detector according to claim 1 is characterized in that: described buzzer phone FM
1With connect from shwoot light pipe ZL.
10. detector according to claim 1 is characterized in that: described buzzer phone FM
2In parallel with LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96213850 CN2260738Y (en) | 1996-06-25 | 1996-06-25 | Electric detector of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96213850 CN2260738Y (en) | 1996-06-25 | 1996-06-25 | Electric detector of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2260738Y true CN2260738Y (en) | 1997-08-27 |
Family
ID=33896092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96213850 Expired - Fee Related CN2260738Y (en) | 1996-06-25 | 1996-06-25 | Electric detector of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2260738Y (en) |
-
1996
- 1996-06-25 CN CN 96213850 patent/CN2260738Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BAOSHAN IRON & STEEL CO., LTD. Free format text: FORMER NAME OR ADDRESS: SHANGHAI BAOSHAN STEEL( GROUP ) CO.,LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201900, Fujin Road, Shanghai, Baoshan District orchard Patentee after: Baoshan Iron & Steel Co., Ltd. Address before: No. 1, Middle Road, Baoshan District, Shanghai Patentee before: Shanghai Baosteel (Group) Company |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |