CN204160035U - Source of welding current circuit is used in experiment - Google Patents
Source of welding current circuit is used in experiment Download PDFInfo
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- CN204160035U CN204160035U CN201420557247.9U CN201420557247U CN204160035U CN 204160035 U CN204160035 U CN 204160035U CN 201420557247 U CN201420557247 U CN 201420557247U CN 204160035 U CN204160035 U CN 204160035U
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Abstract
The utility model relates to a kind of experiment source of welding current circuit, first resistance R1 one end is connected with positive source, the other end is connected with the first switching tube SW1 input, and the first switching tube SW1 output is connected with second resistance R2 one end, and the second resistance R2 other end connects J1 terminal; J2 terminal is connected with negative power supply, 4th resistance R4 is connected in parallel on the two ends of the first resistance R1 after connecting with the second charging indicator light D2, the positive pole of electric capacity C1 is connected with the output of the first switching tube SW1, negative pole is connected with the negative pole of power supply, after 3rd resistance R3 and the first charging indicator light D1 connect, one end is connected with the second resistance R2, and the other end is connected with J2 terminal.Clamped by the exposed end nipper plier of two thermocouple wires needing welding during use, what avoid thermocouple repeats welding, and sweating heat galvanic couple wire bonding point is firmly full, adds the degree of accuracy of test; Use primary element to form in circuit, cost is low, easy to use.
Description
Technical field
The utility model relates to electronic components test technical field, particularly relates to a kind of experiment source of welding current circuit.
Background technology
In electronic product exploitation, often to test the temperature of electronic devices and components, usually adopt thermocouple method.During test, welded together two thermocouple one end, and be bonded at component surface by binding agent by welding equipment, the other end is connected to data collecting instrument with display and record data.After testing, when being taken off from component surface by thermocouple, usual pad can be destroyed, and for keeping accuracy of measurement, when next time uses needs thermocouple again to weld.Sweating heat galvanic couple needs to use the special purpose devices such as special argon arc welding device, and the equipment that common laboratory is not such, have to use scolding tin welding or directly clench, although simple like this, the degree of accuracy that temperature rise is tested greatly reduces.
Utility model content
For solving the problem, the utility model provides a kind of experiment source of welding current circuit, and it need not repeat welding, improves the element test degree of accuracy; And form by common components, cost is low.
The technical scheme that the utility model adopts is: a kind of experiment source of welding current circuit, it comprises the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the first charging indicator light D1, the second charging indicator light D2, the first switching tube SW1, second switch pipe SW2 and electric capacity C1, described first switching tube SW1, second switch pipe SW2 are interlock switch, and when one of them is bright, another does not work; Described first resistance R1 one end is connected with positive source, and the other end is connected with the first switching tube SW1 input, and the first switching tube SW1 output is connected with second resistance R2 one end, and the second resistance R2 other end connects J1 terminal; J2 terminal is connected with negative power supply, the two ends of the first resistance R1 are connected in parallel on after described 4th resistance R4 connects with the second charging indicator light D2, the positive pole of described electric capacity C1 is connected with the output of the first switching tube SW1, negative pole is connected with the negative pole of power supply, after described 3rd resistance R3 and the first charging indicator light D1 connect, one end is connected with the second resistance R2, and the other end is connected with J2 terminal.
Preferably, described J2 connecting terminals is received on metallic plate, and J1 connecting terminals is received on the nipper plier of tape insulation handle.
Preferably, the capacity of described electric capacity C1 is more than 1000uF.
Preferably, the output voltage of described power supply is 12 ~ 48V.
Described experiment source of welding current circuit, beneficial effect is compared to existing technology:
The exposed end nipper plier of two thermocouple wires needing welding is clamped, and the metallic plate connecting J2 is clicked with exposed end, the energy that electric capacity C1 stores will by thermocouple exposed end and metallic plate release, and metal end exposed for thermocouple is welded together by the heat that electric current produces.What this avoid thermocouple repeats welding, and sweating heat galvanic couple wire bonding point is firmly full, adds the degree of accuracy of test; Use primary element to form in circuit, cost is low, easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model embodiment experiment source of welding current circuit.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
Embodiment:
With reference to Fig. 1, experiment source of welding current circuit described in the utility model, comprise the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the first charging indicator light D1, the second charging indicator light D2, the first switching tube SW1, second switch pipe SW2 and electric capacity C1, described first switching tube SW1, second switch pipe SW2 are interlock switch, and when one of them is bright, another does not work; Described first resistance R1 one end is connected with positive source, and the other end is connected with the first switching tube SW1 input, and the first switching tube SW1 output is connected with second resistance R2 one end, and the second resistance R2 other end connects J1 terminal; J2 terminal is connected with negative power supply, the two ends of the first resistance R1 are connected in parallel on after described 4th resistance R4 connects with the second charging indicator light D2, the positive pole of described electric capacity C1 is connected with the output of the first switching tube SW1, negative pole is connected with the negative pole of power supply, after described 3rd resistance R3 and the first charging indicator light D1 connect, one end is connected with the second resistance R2, and the other end is connected with J2 terminal.
The common power equipment of power supply to be output voltage be direct current, for safety, output voltage preferably controls at below 48V, is to ensure welding effect, and output voltage is preferably more than 12V.Electric capacity C1 is storage capacitor, can adopt the electrochemical capacitor of suitable voltage, and capacity is more than 1000uF, and the output voltage of power supply is lower, and the capacity of electric capacity is larger.First resistance R1 is current-limiting resistance, to select according to the maximum output current of power supply and output voltage, its effect is when the first switching tube SW1 closes, because the voltage on electric capacity C1 is zero, be equivalent to short circuit, output current is limited by the first resistance R1, makes electric current be less than the maximum output current of power supply, damages with power-free.D2 is capacitor charging indicator lamp, and the 4th resistance R4 is current-limiting resistance, and resistance is comparatively large, the electric current of restricted passage D1, prevents from damaging.In capacitor charging process, the electric current flowing through the first resistance R1 is comparatively large, and the voltage on R1 is comparatively large, and D1 is by bright.Along with the rising of electric capacity C1 voltage, the voltage on R1 is also more and more lower, when D1 does not work, illustrates that C1 is full of electricity.The indicator lamp be simultaneously made up of R3 and D1 is also by bright.Now SW1 can be disconnected.
During use, J2 terminal can be connected on one piece of metallic plate, and J1 terminal can be connected on the nipper plier of a tape insulation handle.SW2 and SW1 is interlock switch, and when SW1 closes, SW2 disconnects; When SW1 disconnects, SW2 closes.R2 is welding current-limiting resistance.When electric capacity C1 is full of electricity, closed SW2, the corresponding disconnection of SW1, the exposed end nipper plier of two thermocouple wires needing welding is clamped, and the metallic plate connecting J2 is clicked with exposed end, the energy that electric capacity C1 stores will by thermocouple exposed end and metallic plate release, and metal end exposed for thermocouple is welded together by the heat that electric current produces.When having welded, disconnect SW2, SW1 respective closed, electric capacity C1 continues charging, for next welding process is prepared.
Electric capacity C1 and current-limiting resistance R2 value can the corresponding adjustment according to the specification will welding thermocouple wire.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (4)
1. source of welding current circuit is used in an experiment, it is characterized in that, comprise the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the first charging indicator light D1, the second charging indicator light D2, the first switching tube SW1, second switch pipe SW2 and electric capacity C1, described first switching tube SW1, second switch pipe SW2 are interlock switch, and when one of them is bright, another does not work; Described first resistance R1 one end is connected with positive source, and the other end is connected with the first switching tube SW1 input, and the first switching tube SW1 output is connected with second resistance R2 one end, and the second resistance R2 other end connects J1 terminal; J2 terminal is connected with negative power supply, the two ends of the first resistance R1 are connected in parallel on after described 4th resistance R4 connects with the second charging indicator light D2, the positive pole of described electric capacity C1 is connected with the output of the first switching tube SW1, negative pole is connected with the negative pole of power supply, after described 3rd resistance R3 and the first charging indicator light D1 connect, one end is connected with the second resistance R2, and the other end is connected with J2 terminal.
2. experiment source of welding current circuit according to claim 1, is characterized in that: described J2 connecting terminals is received on metallic plate, and J1 connecting terminals is received on the nipper plier of tape insulation handle.
3. experiment source of welding current circuit according to claim 1, is characterized in that: the capacity of described electric capacity C1 is more than 1000uF.
4. experiment source of welding current circuit according to claim 1, is characterized in that: the output voltage of described power supply is 12 ~ 48V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420557247.9U CN204160035U (en) | 2014-09-25 | 2014-09-25 | Source of welding current circuit is used in experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420557247.9U CN204160035U (en) | 2014-09-25 | 2014-09-25 | Source of welding current circuit is used in experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204160035U true CN204160035U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420557247.9U Active CN204160035U (en) | 2014-09-25 | 2014-09-25 | Source of welding current circuit is used in experiment |
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| Country | Link |
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| CN (1) | CN204160035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291211A (en) * | 2015-06-01 | 2017-01-04 | 神讯电脑(昆山)有限公司 | Power-supply adapter test circuit |
-
2014
- 2014-09-25 CN CN201420557247.9U patent/CN204160035U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291211A (en) * | 2015-06-01 | 2017-01-04 | 神讯电脑(昆山)有限公司 | Power-supply adapter test circuit |
| CN106291211B (en) * | 2015-06-01 | 2018-06-22 | 神讯电脑(昆山)有限公司 | Power-supply adapter test circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |