CN210376582U - Voltage-stabilizing diode voltage-stabilizing value pairing measuring device - Google Patents
Voltage-stabilizing diode voltage-stabilizing value pairing measuring device Download PDFInfo
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- CN210376582U CN210376582U CN201921228323.0U CN201921228323U CN210376582U CN 210376582 U CN210376582 U CN 210376582U CN 201921228323 U CN201921228323 U CN 201921228323U CN 210376582 U CN210376582 U CN 210376582U
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Abstract
The utility model discloses a voltage stabilizing value pairing test device capable of simultaneously detecting voltage stabilizing diodes used in pairing mode, which comprises a direct current stabilized voltage power supply, a secondary power supply, a voltage stabilizing value test circuit, a digital voltmeter and an upper computer; the direct-current stabilized voltage power supply supplies electric energy to a secondary power supply, the electric energy is processed by each module in the secondary power supply and then supplies energy to the stabilized voltage value pairing test point, the stabilized voltage value test circuit can simultaneously measure two paired stabilized voltage diodes, the measured value is read by a digital voltmeter, an upper computer can collect and store the measured stabilized voltage value, and whether the pairing error between the stabilized voltage values meets the requirement or not is analyzed and calculated. The utility model discloses an analog circuit's test method has reduced the external influence that receives in the test procedure to can measure two zener diodes that pair and use simultaneously, improve the measurement accuracy of zener diode steady voltage value.
Description
Technical Field
The utility model relates to a zener diode parameter measurement technical field specifically is a zener diode steady voltage value pairs measuring device.
Background
The conventional method for measuring the regulated voltage value of the voltage regulator diode is a pulse automatic test, the method utilizes a millisecond-level voltage pulse signal for measurement, has poor stability, is easily influenced by environmental temperature, and has low measurement precision, and for the voltage regulator diodes used in an application circuit in a matched mode, the matched measurement precision of the regulated voltage value directly influences the precision of a symmetrical circuit, at the moment, the pulse automatic test cannot meet the test requirement of the regulated voltage value of the matched voltage regulator diode, and the two voltage regulator diodes cannot be simultaneously tested, so that the matched error between the regulated voltage values of the matched voltage regulator diodes cannot be accurately tested.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a measure device of two steady voltage diode steady voltage value that pairs used to improve and pair the measurement accuracy who uses the steady voltage diode steady voltage value and can measure two steady voltage diode's the error of pairing.
In order to solve the technical problem, the utility model discloses a technical scheme is: a voltage stabilizing value pairing and measuring device of a voltage stabilizing diode; the device includes: the device comprises a direct-current stabilized power supply, a secondary power supply, a double-path stabilized voltage value pairing test circuit, a digital voltmeter and an upper computer; the device adopts an analog circuit method and can simultaneously measure two voltage stabilizing diodes.
By means of the device, the voltage stabilizing diodes can simulate the use condition in an application circuit in the measuring process so as to improve the stability and the precision of measured data, and the pairing error between the voltage stabilizing values of the two voltage stabilizing diodes is tested by simultaneously measuring the two voltage stabilizing diodes.
The output voltage of the voltage-stabilized direct-current power supply is 28V, and the voltage-stabilized direct-current power supply supplies power for a secondary power supply.
The secondary power supply is connected with the voltage-stabilizing direct-current power supply and the double-circuit voltage-stabilizing value pairing test circuit, the secondary power supply module receives electric energy provided by the voltage-stabilizing direct-current power supply, the +15V voltage is output through the DC/DC module, and the double-circuit voltage-stabilizing value pairing test circuit is supplied with energy after being filtered by the filter.
The double-circuit voltage stabilization value pairing test circuit comprises: light emitting diodes D1, D2, ceramic package transistor sockets T1, T2, resistors R1, R2 and a potentiometer W1. The circuit is a device directly connected with a voltage stabilizing diode in the measuring process and is connected with a secondary power supply and a digital voltmeter.
The light emitting diodes are used for confirming whether the voltage stabilizing diodes work or not and the reverse breakdown state, and if the voltage stabilizing diodes work in the reverse breakdown state, the light emitting diodes D1 and D2 are lightened.
The ceramic-packaged transistor sockets T1 and T2 are used for mounting a voltage stabilizing diode to be tested and are connected with resistors R1 and R2 and light emitting diodes D1 and D2, and the resistors R1 and R2 ensure that a test branch is under the specified test current.
The potentiometer W1 is used for adjusting the consistency of the voltage-stabilizing currents of the two branches, so that the symmetry of the two voltage-stabilizing circuits is guaranteed, and the potentiometer W1 is installed in one branch of the two voltage-stabilizing value pairing test circuit and connected with the R2.
The two digital voltmeters are arranged in the device and are used for accurately measuring the voltage stabilization value of the voltage stabilization diode working in the reverse breakdown state, and the two digital voltmeters are respectively connected with the ceramic packaging transistor sockets T1 and T2 and an upper computer.
The upper computer also comprises software installed in the upper computer, and the upper computer is used for collecting, recording and storing the voltage stabilizing value of the voltage stabilizing diode measured by the digital voltmeter and judging whether the pairing error between the voltage stabilizing values meets the requirement or not by calculating the difference value between the two voltage stabilizing values. Is connected with a six-bit half-digital voltmeter.
The voltage stabilizing value matching and measuring device of the voltage stabilizing diode adopts an analog circuit testing method, an upper computer interface monitors output of two paths of voltage stabilizing values in real time, and testers can visually obtain change conditions and matching precision of the voltage stabilizing values. In addition, the device also has the functions of short circuit, overcurrent protection and reverse connection prevention, and the safety and reliability of the whole test process are ensured.
Compared with the prior art, the utility model discloses the beneficial effect who has does: the paired voltage-stabilizing diodes used in the symmetrical circuit are tested, the testing process is simple and convenient, the operation is easy, the testing data is stable, the precision is high, and the expected design requirements are met. Through testing the voltage stabilizing value of the paired voltage stabilizing diodes, the defect of automatic pulse test is overcome, the requirement on the matching precision of the voltage stabilizing diodes in a symmetrical circuit is ensured, and the precision of the symmetrical circuit loaded with the voltage stabilizing diodes is improved.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a schematic circuit diagram of the present invention.
Detailed Description
As shown in fig. 1, an embodiment of the present invention includes five parts, namely a dc regulated power supply, a secondary power supply, a two-way regulated voltage value pairing test circuit, a six-bit half-digital voltmeter, and an upper computer. The electric energy provided by the direct current power supply is converted by the secondary power supply and then supplies power to the double-circuit voltage-stabilizing value pairing test circuit, electronic devices contained in the double-circuit voltage-stabilizing value pairing test circuit are used for inserting voltage-stabilizing diodes and simulating a test state approximate to an actual use environment, measured voltage-stabilizing value data are read on a six-bit semi-digital voltmeter, and the read data are collected and analyzed by the upper computer.
As shown in fig. 2, the device operation circuit principle is as follows: the output voltage of the direct current stabilized voltage power supply is 28V, the input is provided for the secondary power supply module HSA28S15, and the +15V voltage output by the DC/DC module HSA28S15 is provided for the two-way voltage stabilization value pairing test circuit after being filtered. The two-way voltage-stabilizing value pairing test circuit consists of light emitting diodes BT702D1 and D2, ceramic packaging transistor sockets T1 and T2, resistors 1.1K omega R1 and R2 and a potentiometer W502W1, the circuit comprises two branches, the two branches are respectively provided with one light emitting diode BT702D1 and one light emitting diode D2, the ceramic packaging transistor sockets T1 and the T2 are respectively connected with the resistors 1.1K omega R1 and the resistor R2 in series, and the branch containing the resistor R2 is connected with the potentiometer W1W502 in series. The six-bit half-digital voltmeter is directly connected with the ceramic package transistor sockets T1, T2 and the upper computer. The electronic device functions in a circuit as follows: when the voltage stabilizing diode works in a reverse breakdown state, the light emitting diodes BT702D1 and D2 are lightened to ensure that the voltage stabilizing diode is in the reverse breakdown state during testing; the ceramic package transistor sockets T1, T2 are used to mount the zener diode 2DW14A under test; the potentiometer W1 is used for adjusting the consistency of the two voltage-stabilizing currents so as to ensure the symmetry of the two voltage-stabilizing circuits, and the resistors R1 and R2 are used for ensuring that the measured branch current reaches a specified value. The two six-bit half-digital voltmeters are used for accurately measuring the regulated voltage value of the 2DW14A working in the reverse breakdown state, the upper computer and software thereof are mainly used for collecting, recording and storing the regulated voltage value of the 2DW14A measured by the six-bit half-digital voltmeters, and whether the pairing error between the regulated voltage values meets the requirement or not is judged by calculating the difference between the two regulated voltage values.
Claims (8)
1. The voltage-stabilizing value pairing measuring device of the voltage-stabilizing diode is characterized by comprising a double-circuit voltage-stabilizing value pairing test circuit, wherein the double-circuit voltage-stabilizing value pairing test circuit comprises two parallel measurement branches, and the two parallel measurement branches are respectively connected with one voltage-stabilizing diode to be measured.
2. The paired zener diode zener value measuring device of claim 1 wherein the input of the two-way zener value pairing circuit is connected to a power module.
3. The paired measurement device for regulated voltage values of a zener diode according to claim 2 wherein the power module comprises a dc regulated power supply and a secondary power supply, the dc regulated power supply is connected with the secondary power supply, and the secondary power supply is connected with the input end of the dual-path paired test circuit for regulated voltage values.
4. The paired measurement devices for zener diode zener values according to claim 1 wherein the two measurement circuits each comprise a light emitting diode, a resistor; and the voltage stabilizing diode is connected between the light emitting diode and the resistor.
5. The paired zener diode zener value measuring device of claim 4 wherein the zener diode under test is disposed on a ceramic packaged transistor socket.
6. The paired measurement devices for the regulated voltage value of the Zener diode according to any one of claims 1 to 5, wherein at least one branch of the two measurement circuits is provided with a potentiometer, and the potentiometer is connected with a resistor.
7. The paired steady value measuring device according to claim 1, wherein each of the two to-be-measured zener diodes is connected to a digital voltmeter.
8. The apparatus according to claim 7, wherein the two digital voltmeters are connected to an upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921228323.0U CN210376582U (en) | 2019-07-31 | 2019-07-31 | Voltage-stabilizing diode voltage-stabilizing value pairing measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921228323.0U CN210376582U (en) | 2019-07-31 | 2019-07-31 | Voltage-stabilizing diode voltage-stabilizing value pairing measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210376582U true CN210376582U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921228323.0U Active CN210376582U (en) | 2019-07-31 | 2019-07-31 | Voltage-stabilizing diode voltage-stabilizing value pairing measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210376582U (en) |
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2019
- 2019-07-31 CN CN201921228323.0U patent/CN210376582U/en active Active
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