CN208421017U - A kind of program-controlled adjustable analog power of internal resistance - Google Patents
A kind of program-controlled adjustable analog power of internal resistance Download PDFInfo
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- CN208421017U CN208421017U CN201821245915.9U CN201821245915U CN208421017U CN 208421017 U CN208421017 U CN 208421017U CN 201821245915 U CN201821245915 U CN 201821245915U CN 208421017 U CN208421017 U CN 208421017U
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Abstract
The utility model discloses and provides a kind of program-controlled adjustable analog power of internal resistance.It includes digital analog converter one, digital analog converter two, high power up amps, adder, subtracter, multiplier, resistance and load, voltage VR and VS are generated respectively by two analog converters, current sampling resistor is used in circuit, input/output electric current is converted to and obtains the voltage with subtracter after voltage Iout*R1, and voltage VR is arranged with resistance by multiplier and is multiplied, obtain voltage Iout*R1*VR, the voltage is added by adder with output feedback voltage V out, obtain voltage Iout*R1*VR+Vout, from the relational expression it is concluded that, controlling VS can control the size of output voltage, by controlling VR, so that the value of R1*VR is controlled, i.e. equivalent control power supply exports internal resistance.The utility model can be applied to power technique fields.
Description
Technical field
The utility model relates to power technique fields more particularly to a kind of program-controlled adjustable analog power of internal resistance, the simulations
Power supply is used as battery applications in battery protecting plate performance test.
Background technique
With the development of electronic industry, requirement of the people to power supply is higher and higher, to more inexpensive, higher precision, more
Function direction is developed.On battery testing field, battery can be considered a kind of there are the power supply of certain internal resistance, and the material of itself determines
It cannot overcharge, over-discharge, overcurrent, short circuit and superhigh temperature charge and discharge etc..In order to protect battery, people devise battery protecting plate
Battery is protected, the performance quality of battery protecting plate directly determines the service performance of battery.The property of battery protecting plate
It can detect and have to cooperation battery progress, carry out charge and discharge electrical measurement if true battery is directly used in battery protecting plate test
Examination, it is easy to make the even permanent damage of its lost of life, pollute and waste.Accordingly, it is desirable to which designing can simulate
The device of the performance of battery come replace actual battery realize battery protecting plate performance detection.
Utility model content
Technical problem to be solved in the utility model is overcome the deficiencies in the prior art, and providing that a kind of internal resistance is program-controlled can
It adjusts, the program-controlled adjustable analog power of internal resistance of constant-voltage high-precision output.
The technical scheme adopted by the utility model is the utility model include digital analog converter one, digital analog converter two,
High power up amps, adder, subtracter, multiplier, resistance and load, the input of the high power up amps is just
End connects the digital analog converter one, and the input negative terminal of the high power up amps connects the third end of the adder,
The output end of the high power up amps connects one end of the resistance, and the other end of the resistance connects load, described
First end, second end and the both ends of the resistance of subtracter are connected in parallel, and the third end of the subtracter connects the multiplication
The first end of device, the second end of the multiplier connect the digital analog converter two, described in the third end connection of the multiplier
The second end of the first end of adder, the adder connects load.
The digital analog converter one generates voltage VS, and the digital analog converter two generates voltage VR, and the resistance is electric current
Sample resistance, the electric current for flowing through the resistance can generate relevant voltage value in the resistance.
The beneficial effects of the utility model are: since the utility model includes digital analog converter one, digital analog converter two, big
Power operational amplifier, adder, subtracter, multiplier, resistance and load, the input anode of the high power up amps
The digital analog converter one is connected, the input negative terminal of the high power up amps connects the third end of the adder, institute
The output end for stating high power up amps connects one end of the resistance, and the other end of the resistance connects load, described to subtract
First end, second end and the both ends of the resistance of musical instruments used in a Buddhist or Taoist mass are connected in parallel, and the third end of the subtracter connects the multiplier
First end, the second end of the multiplier connects the digital analog converter two, the third end connection of the multiplier it is described plus
The second end of the first end of musical instruments used in a Buddhist or Taoist mass, the adder connects load；The digital analog converter one generates voltage VS, and the digital-to-analogue turns
Parallel operation two generates voltage VR, and the resistance is current sampling resistor, and the electric current for flowing through the resistance can be generated in the resistance
Relevant voltage value；The utility model generates voltage VR and VS by two analog converters respectively, uses current sampling in circuit
Resistance R1 is converted to input/output electric current and obtains the voltage with subtracter after voltage Iout*R1, and passes through multiplier and electricity
Resistance setting voltage VR is multiplied, and obtains voltage Iout*R1*VR, which is carried out by adder and output feedback voltage V out
It is added, obtains voltage Iout*R1*VR+Vout, be input to the reverse side of high power up amps, it, should according to negative-feedback principle
Reverse side voltage is eventually equal to get relational expression: VS=Iout*R1*VR+Vout is arrived with the voltage VS of forward end, according to arrangement
Vout=VS- Iout* (R1*VR) can be obtained, from the relational expression it may be concluded that control VS can control the size of output voltage,
By controlling VR, so that the value of R1*VR is controlled, i.e., equivalent control power supply exports internal resistance, so the utility model can be accomplished
Program-controlled adjustable constant voltage high-precision output and internal resistance regulating.It has the following advantages:
1. output voltage can be arranged in high precision；
2. settable internal resistance when being used as simulated battery；
3. it is simple, stablize, it is not easy to by other disturbing factors；
4. at low cost.
Detailed description of the invention
Fig. 1 is the utility model circuit principle structure block diagram.
Specific embodiment
As shown in Figure 1, the utility model it include digital analog converter 1, digital analog converter 22, high-power operation amplifier
Device 3, adder 4, subtracter 5, multiplier 6, resistance R1 and load 7, the input anode connection of the high power up amps 3
The digital analog converter 1, the input negative terminal of the high power up amps 3 connects the third end of the adder 4, described
The output end of high power up amps 3 connects one end of the resistance R1, and the other end connection load 7 of the resistance is described
First end, second end and the both ends of the resistance R1 of subtracter 5 are connected in parallel, described in the third end connection of the subtracter 5
The second end of the first end of multiplier 6, the multiplier 6 connects the digital analog converter 22, the third end of the multiplier 6
Connect the first end of the adder 4, the second end connection load 7 of the adder 4.
The digital analog converter 1 generates voltage VS, and the digital analog converter 22 generates voltage VR, and the resistance is electricity
Sample resistance R1 is flowed, the electric current for flowing through the resistance can generate relevant voltage value in the resistance R1.
In the present embodiment, voltage VR and VS are generated respectively by two analog converters.Current sampling electricity is used in circuit
R1 is hindered, uses subtracter 5 to obtain the voltage after input/output electric current is converted to voltage Iout*R1, and pass through multiplier 6 and electricity
Resistance setting voltage VR is multiplied, and obtains voltage Iout*R1*VR, which is carried out by adder 4 and output feedback voltage V out
It is added, obtains voltage Iout*R1*VR+Vout, be input to the reverse side of high power up amps 3, according to negative-feedback principle,
The reverse side voltage is eventually equal to get relational expression: VS=Iout*R1*VR+Vout is arrived with the voltage VS of forward end, according to whole
Li Ke get Vout=VS- Iout* (R1*VR), from the relational expression it may be concluded that control VS can control the big of output voltage
Small, by controlling VR, so that the value of R1*VR is controlled, i.e., equivalent control power supply exports internal resistance.
The utility model can be applied to power technique fields.
Claims (2)
1. a kind of program-controlled adjustable analog power of internal resistance, it is characterised in that: it includes digital analog converter one (1), digital analog converter
Two (2), high power up amps (3), adder (4), subtracter (5), multiplier (6), resistance (R1) and load (7), institute
The input anode for stating high power up amps (3) connects the digital analog converter one (1), the high power up amps
(3) input negative terminal connects the third end of the adder (4), and the output end of the high power up amps (3) connects institute
State one end of resistance (R1), the other end connection load (7) of the resistance (R1), first end, the second end of the subtracter (5)
It being connected in parallel with the both ends of the resistance (R1), the third end of the subtracter (5) connects the first end of the multiplier (6),
The second end of the multiplier (6) connects the digital analog converter two (2), and the third end connection of the multiplier (6) is described to be added
The first end of musical instruments used in a Buddhist or Taoist mass (4), the second end connection load (7) of the adder (4).
2. the program-controlled adjustable analog power of a kind of internal resistance according to claim 1, it is characterised in that: the digital analog converter
One (1) generates voltage VS, and the digital analog converter two (2) generates voltage VR, and the resistance (R1) is current sampling resistor, flows through
The electric current of the resistance (R1) can generate relevant voltage value at the resistance (R1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821245915.9U CN208421017U (en) | 2018-08-03 | 2018-08-03 | A kind of program-controlled adjustable analog power of internal resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821245915.9U CN208421017U (en) | 2018-08-03 | 2018-08-03 | A kind of program-controlled adjustable analog power of internal resistance |
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| Publication Number | Publication Date |
|---|---|
| CN208421017U true CN208421017U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821245915.9U Active CN208421017U (en) | 2018-08-03 | 2018-08-03 | A kind of program-controlled adjustable analog power of internal resistance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865792A (en) * | 2021-01-08 | 2021-05-28 | 胜达克半导体科技(上海)有限公司 | Method for testing linearity of analog-digital converter at low cost |
| CN118092567A (en) * | 2024-04-18 | 2024-05-28 | 常州同惠电子股份有限公司 | Method for realizing programmable internal resistance based on FPGA and regulating system |
-
2018
- 2018-08-03 CN CN201821245915.9U patent/CN208421017U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865792A (en) * | 2021-01-08 | 2021-05-28 | 胜达克半导体科技(上海)有限公司 | Method for testing linearity of analog-digital converter at low cost |
| CN112865792B (en) * | 2021-01-08 | 2021-11-19 | 胜达克半导体科技(上海)有限公司 | Method for testing linearity of analog-digital converter at low cost |
| CN118092567A (en) * | 2024-04-18 | 2024-05-28 | 常州同惠电子股份有限公司 | Method for realizing programmable internal resistance based on FPGA and regulating system |
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