CN201159760Y - Adjustable DC electronic load device - Google Patents
Adjustable DC electronic load device Download PDFInfo
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- CN201159760Y CN201159760Y CN 200820018728 CN200820018728U CN201159760Y CN 201159760 Y CN201159760 Y CN 201159760Y CN 200820018728 CN200820018728 CN 200820018728 CN 200820018728 U CN200820018728 U CN 200820018728U CN 201159760 Y CN201159760 Y CN 201159760Y
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- adjustable
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- load
- electronic load
- load device
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- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 101001051799 Aedes aegypti Molybdenum cofactor sulfurase 3 Proteins 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model provides an adjustable DC electronic load device which belongs to the circuit part technical field; a load setter is connected with a control circuit; an unidirectional cycle connection loop is constructed by the control circuit, a power MOS, a current detector and an I/V converter; the I/V converter is connected with an A/D signal converter; the A/D signal converter is connected with a digital display. The current detector adopts a precise micro-processor; cooling fins are arranged on the power MOS; the adjustable DC electronic load device can use the linear amplification feature of the power MOS to change the load through controlling the grid electrode voltage and satisfy the practical requirements; the adjustable DC electronic load device has the advantages of displaying the load in numbers, simple and visual display, conveniently setting the load in certain range flexibly and freely.
Description
1, technical field
The utility model relates to the circuit block technical field, specifically a kind of adjustable DC electronic load device.
2, background technology
The duty of power supply is vital for electrical appliance, aging or other phenomenons or fault also can appear in power supply, thereby can't provide normal voltage and current to electrical appliance, guarantee that constant voltage, constant current or constant-resistance power supply in the circuit have not had corresponding effect, at this moment just need electronic load to exercise and detect or booster action.Especially for power source aging the time, can the load size be set flexibly according to the actual requirements, mainly be to regulate output current, yet present electronic load does not have digital display function, can not show intuitively that this is using or to electrical appliance or the analytical control of circuit brings very big inconvenience.
3, summary of the invention
Technical assignment of the present utility model is to solve the deficiencies in the prior art, and a kind of adjustable DC electronic load device with digital display function is provided.
The technical solution of the utility model realizes in the following manner, adjustable DC electronic load device, the load set device is connected with control circuit, control circuit and MOS, current detector, I/V converter are formed unidirectional circulation link circuit, the I/V converter also is connected with the A/D signal converter, and the A/D signal converter is connected with digital indicator.Current detector adopts precision micro resistor.MOS is provided with heat radiator.
The utility model has the advantages that:
This is adjustable, and the DC electronic load device can utilize the linear amplification characteristic of MOS, change load (electric current) size and satisfy actual needs by controlling its grid voltage, utilize numeral to show the load size in real time, simple, intuitive, and display voltage and current precision height, can be flexible within the specific limits freely set the load size.
4, description of drawings
Accompanying drawing 1 is a structural representation block diagram of the present utility model.
Mark in the accompanying drawing is represented respectively;
Load set device 1, control circuit 2, MOS 3, current detector 4, I/V converter 5, A/D signal converter 6, digital indicator 7.
5, embodiment
Below in conjunction with accompanying drawing adjustable DC electronic load device of the present utility model is done following detailed description the in detail:
As shown in Figure 1, the Core Feature district of adjustable DC electronic load device of the present utility model comprises control circuit 2, MOS 3, current detector 4, I/V converter 5, A/D signal converter 6, load set device 1 is connected with control circuit 2, control circuit 2 is formed unidirectional circulation link circuit with MOS 3, current detector 4, I/V converter 5, I/V converter 5 also is connected with A/D signal converter 6, and A/D signal converter 6 is connected with digital indicator 7.Current detector 4 adopts precision micro resistor.MOS 3 is provided with heat radiator.
The function of this is adjustable DC electronic load device is: during at power source aging, load size (mainly being to regulate output current) can be set flexibly according to the actual requirements.
The principle of this is adjustable DC electronic load device is: this electronic load equivalence is a power-adjustable resistance, mainly utilizes the linear amplification characteristic of MOS, changes load (electric current) size by controlling its grid voltage, to satisfy actual needs.
The realization of this is adjustable DC electronic load device comprises following several sections:
Load set device: set the load size;
MOS: be the core devices of this device, it has directly determined these important indicators of the maximum voltage that can apply, maximum current and peak power, must radiation fin in the side circuit.
Current detector: adopt precision micro resistor, realize flowing through the current detecting of MOS.
I/V converter: through processing and amplifying, and convert detected electric current to voltage signal, provide sampling numerical value for numeral shows on the one hand, on the other hand as the feedback signal of control circuit.
The grid voltage of control circuit: power controlling MOS is determined jointly by load set device and I/V converter.
A/D signal converter: analog signal conversion is become digital signal, so that carry out data presentation.
Digital indicator: the load size is shown digital signal intuitively with numeral.
Claims (3)
1, adjustable DC electronic load device, it is characterized in that the load set device is connected with control circuit, control circuit and MOS, current detector, I/V converter are formed unidirectional circulation link circuit, the I/V converter also is connected with the A/D signal converter, and the A/D signal converter is connected with digital indicator.
2, adjustable DC electronic load device according to claim 1 is characterized in that current detector adopts precision micro resistor.
3, adjustable DC electronic load device according to claim 1 is characterized in that MOS is provided with heat radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820018728 CN201159760Y (en) | 2008-03-06 | 2008-03-06 | Adjustable DC electronic load device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820018728 CN201159760Y (en) | 2008-03-06 | 2008-03-06 | Adjustable DC electronic load device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201159760Y true CN201159760Y (en) | 2008-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820018728 Expired - Fee Related CN201159760Y (en) | 2008-03-06 | 2008-03-06 | Adjustable DC electronic load device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201159760Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330595A (en) * | 2014-10-30 | 2015-02-04 | 广东威创视讯科技股份有限公司 | DC (Direct Current) module power supply aged electronic load device used for laser |
| CN104717489A (en) * | 2013-12-13 | 2015-06-17 | 致茂电子股份有限公司 | Detecting device for detecting video device and control method thereof |
| CN109725194A (en) * | 2019-01-23 | 2019-05-07 | 黑龙江省计量检定测试研究院 | Portable car-mounted navigation audio-video system energy consumption testing instrument |
| CN110501540A (en) * | 2019-08-23 | 2019-11-26 | 深圳市精泰达科技有限公司 | A kind of electronic load circuit |
-
2008
- 2008-03-06 CN CN 200820018728 patent/CN201159760Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104717489A (en) * | 2013-12-13 | 2015-06-17 | 致茂电子股份有限公司 | Detecting device for detecting video device and control method thereof |
| CN104717489B (en) * | 2013-12-13 | 2017-04-12 | 致茂电子股份有限公司 | detecting device for detecting video device and control method thereof |
| CN104330595A (en) * | 2014-10-30 | 2015-02-04 | 广东威创视讯科技股份有限公司 | DC (Direct Current) module power supply aged electronic load device used for laser |
| CN104330595B (en) * | 2014-10-30 | 2017-10-10 | 广东威创视讯科技股份有限公司 | Laser DC Module power source aging electronic load device |
| CN109725194A (en) * | 2019-01-23 | 2019-05-07 | 黑龙江省计量检定测试研究院 | Portable car-mounted navigation audio-video system energy consumption testing instrument |
| CN110501540A (en) * | 2019-08-23 | 2019-11-26 | 深圳市精泰达科技有限公司 | A kind of electronic load 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: 20081203 Termination date: 20110306 |