CN207083015U - A kind of mu balanced circuit with multiple-channel output - Google Patents
A kind of mu balanced circuit with multiple-channel output Download PDFInfo
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- CN207083015U CN207083015U CN201721141461.6U CN201721141461U CN207083015U CN 207083015 U CN207083015 U CN 207083015U CN 201721141461 U CN201721141461 U CN 201721141461U CN 207083015 U CN207083015 U CN 207083015U
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- voltage
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- regulator diode
- divider resistance
- npn triode
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Abstract
The utility model discloses a kind of mu balanced circuit with multiple-channel output, and centered on a NPN triode, when input voltage is less than the opposed conductor magnitude of voltage of voltage-regulator diode, the base stage of NPN triode does not have electric current, and now Q1 is closed；When input voltage is higher than the reverse-conducting value of voltage-regulator diode, the base stage of NPN triode produces electric current, now NPN transistor base voltage is the voltage of voltage regulation Vref of voltage-regulator diode, therefore, first output voltage of NPN triode emitter stage output is Vref 0.7V, and its magnitude of voltage can be adjusted by the voltage stabilizing value for adjusting voltage-regulator diode；3rd road output voltage of Three-end voltage stabilizer output is a fixed value, and the second road output voltage can be adjusted by the ratio for adjusting the first divider resistance and the second divider resistance.So, three kinds of different reference voltage outputs can be provided for circuit simultaneously, meanwhile, the complexity of circuit is reduced, so as to reduce the quantity using device, reduces cost.
Description
Technical field
The utility model belongs to power technique fields, more specifically, is related to a kind of voltage stabilizing electricity with multiple-channel output
Road, for providing the reference voltage source of multichannel difference voltage simultaneously for subsequent conditioning circuit.
Background technology
In the subsequent conditioning circuit design of electric equipment, the reference voltage source of different voltages is often used, is characterized in voltage
Species is more but required electric current is small.
In the prior art, announced such as on 05 31st, 2017, publication No. is CN106787711A Chinese invention patent
A kind of a kind of " mu balanced circuit and Switching Power Supply of Switching Power Supply " that can export different voltages of Shen Qing Publication, it includes reference
Voltage output voltage stabilizing branch road, the reference voltage output voltage stabilizing branch road include：Voltage stabilizing field-effect metal-oxide-semiconductor and the first control chip；
The drain electrode of the voltage stabilizing metal-oxide-semiconductor is connected with the reference voltage output terminal of Switching Power Supply；The grid of the voltage stabilizing metal-oxide-semiconductor and described the
The output end of one control chip is connected；The source electrode of the voltage stabilizing metal-oxide-semiconductor is connected with the input of first control chip；It is described
First control chip, for the source voltage and the comparative result of reference voltage according to the voltage stabilizing metal-oxide-semiconductor, control the voltage stabilizing
The ON time of metal-oxide-semiconductor, to stablize the source voltage of the voltage stabilizing metal-oxide-semiconductor.However, the device used in the circuit is more, electricity
Road is also complex, and cost is higher.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of voltage stabilizing electricity with multiple-channel output
Road, to reduce the complexity of circuit, so as to reduce the quantity using device, reduce cost.
To realize above-mentioned purpose of utility model, the utility model has the mu balanced circuit of multiple-channel output, it is characterised in that bag
Include：Current regulator diode, voltage-regulator diode, NPN triode, Three-end voltage stabilizer, isolation resistance and the first divider resistance and
Two divider resistances；
The negative terminal of the colelctor electrode connection current regulator diode of NPN triode, while it is used as voltage input end；NPN triode
Base stage connects the negative terminal and current regulator diode anode of voltage-regulator diode, the positive ending grounding of voltage-regulator diode；The hair of NPN triode
Output end of the emitter-base bandgap grading as first via output voltage, meanwhile, it is connected with one end of isolation resistance, the other end conduct of isolation resistance
The output end of second road output voltage；The input of Three-end voltage stabilizer is connected with the output end of the second road output voltage, three ends
The output end of voltage-stabilizing device is connected to the output end of the second road output voltage by the first divider resistance, passes through the second divider resistance
To ground, the earth terminal of Three-end voltage stabilizer is connected to ground, and the output end of Three-end voltage stabilizer is as the defeated of the 3rd road output voltage
Go out end, its voltage is a fixed value, and the ratio by adjusting the first divider resistance and the second divider resistance adjusts the second tunnel and exported
The magnitude of voltage of voltage.
What the purpose of this utility model was realized in.
The utility model has the mu balanced circuit of multiple-channel output, centered on a NPN triode, when input voltage is less than
During the opposed conductor magnitude of voltage of voltage-regulator diode, the base stage of NPN triode does not have electric current, and now Q1 is closed；When input voltage height
When the reverse-conducting value of voltage-regulator diode, the base stage of NPN triode produces electric current, and now NPN transistor base voltage is steady
The voltage of voltage regulation Vref of diode is pressed, therefore, the first output voltage of NPN triode emitter stage output is Vref-0.7V, is passed through
The voltage stabilizing value of adjustment voltage-regulator diode can adjust its magnitude of voltage；3rd road output voltage of Three-end voltage stabilizer output is solid for one
Definite value, the second road output voltage can be adjusted by the ratio for adjusting the first divider resistance and the second divider resistance.So, can be with
For circuit three kinds of different reference voltage outputs are provided simultaneously, meanwhile, the complexity of circuit is reduced, so as to reduce using device
Quantity, reduce cost.
Brief description of the drawings
Fig. 1 is that the utility model has a kind of schematic diagram of embodiment of the mu balanced circuit of multiple-channel output；
Fig. 2 is an instantiation circuit diagram of the mu balanced circuit with multiple-channel output shown in Fig. 1.
Embodiment
Specific embodiment of the present utility model is described below in conjunction with the accompanying drawings, so as to those skilled in the art more
Understand the utility model well.Requiring particular attention is that in the following description, when known function and design detailed
Perhaps, when description can desalinate main contents of the present utility model, these descriptions will be ignored herein.
Fig. 1 is the schematic diagram that the utility model has a kind of embodiment of the mu balanced circuit of multiple-channel output
In the present embodiment, as shown in figure 1, the mu balanced circuit that the utility model has multiple-channel output includes：The pole of constant current two
Pipe V1, voltage-regulator diode V2, NPN triode Q1, Three-end voltage stabilizer V3, isolation resistance R1 and the first divider resistance R2 and
Two divider resistance R3.
The colelctor electrode connection current regulator diode V1 of NPN triode Q1 negative terminal, while as voltage input end Vin；NPN tri-
Pole pipe Q1 base stage connection voltage-regulator diode V2 negative terminal and current regulator diode anode V1, voltage-regulator diode V2 positive termination
Ground；Output end vo 1 of the emitter stage of NPN triode Q1 as first via output voltage, meanwhile, connect with isolation resistance R1 one end
Connect, the output end vo 2 of the isolation resistance R1 other end as the second road output voltage；Three-end voltage stabilizer V3 input and
The output end vo 1 of two road output voltages connects, and Three-end voltage stabilizer V3 output end is connected to by the first divider resistance R2
The output end vo 2 of two road output voltages, by the second divider resistance R3 to ground, Three-end voltage stabilizer V3 earth terminal and ground connect
Connect, the output end vo 3 of Three-end voltage stabilizer V2 output end (i.e. reference edge) as the 3rd road output voltage, its voltage is one solid
Definite value, the ratio by adjusting the first divider resistance R2 and the second divider resistance R3 adjust the magnitude of voltage of the second road output voltage.
Centered on a NPN triode Q1, when input voltage vin is less than voltage-regulator diode V2 opposed conductor magnitude of voltage
When, the base stage of NPN triode does not have electric current, and now NPN triode Q1 is closed；When input voltage vin is higher than voltage-regulator diode V2
Reverse-conducting value when, the base stage of NPN triode Q1 produces electric current, and now NPN transistor base voltage is voltage-regulator diode V2
Voltage of voltage regulation Vref, therefore, NPN triode Q1 emitter stage output the first output voltage be that the voltage of output end vo 1 is Vref-
0.7V, its magnitude of voltage can be adjusted by the voltage stabilizing value for adjusting voltage-regulator diode V2；3rd tunnel of Three-end voltage stabilizer V3 outputs
Output voltage is that the voltage of output end vo 3 is a fixed value, by the ratio for adjusting the first divider resistance R2 and the second divider resistance R3
Value can adjust the second road output voltage i.e. voltage of output end vo 2.So, three kinds of different references can be provided for circuit simultaneously
Voltage output, meanwhile, the complexity of circuit is reduced, so as to reduce the quantity using device, reduces cost.
The utility model uses less device to provide three kinds of different reference voltages simultaneously for electrical equipment subsequent conditioning circuit,
The complexity of circuit is reduced, so as to reduce the quantity using device, reduces cost.
Fig. 2 is an instantiation circuit diagram of the mu balanced circuit with multiple-channel output shown in Fig. 1.
In this example, it is permanent as shown in Fig. 2 NPN triode Q1 uses model 2N5551 NPN low-power transistors
Stream diode V1 uses model F-152, and its electric current is 1.28~1.72mA, and voltage-regulator diode uses model IN4743A, its
Voltage stabilized range is 12.35V~13.65V, representative value 13V, in specifically used middle selection 12.7V, such first via output voltage
For 12V.Three-end voltage stabilizer V3 model TL431BFTA, isolation resistance R1 are 4.7K, and the first divider resistance R2 is 10K, the
Two divider resistance R3 are 10K, and Three-end voltage stabilizer V2 output end is that reference edge output voltage i.e. the 3rd road output voltage is one
The voltage of the output end vo 1 of fixed value 2.5V, such Three-end voltage stabilizer V3 input and the second road output voltage is 5V.
When circuit uses parameter shown in Fig. 2, Vo1, Vo2, Vo3 output voltage is respectively 12V, 5V, 2.5V.
Although the illustrative embodiment of the utility model is described above, in order to the art
Technical staff understands the utility model, it should be apparent that the utility model is not limited to the scope of embodiment, to this technology
For the those of ordinary skill in field, as long as the essence of the present utility model that various change is limited and determined in appended claim
In god and scope, these changes are it will be apparent that all utilize the innovation and creation of the utility model design in the row of protection.
Claims (1)
- A kind of 1. mu balanced circuit with multiple-channel output, it is characterised in that including：Current regulator diode, voltage-regulator diode, NPN tri- Pole pipe, Three-end voltage stabilizer, isolation resistance and the first divider resistance and the second divider resistance；The negative terminal of the colelctor electrode connection current regulator diode of NPN triode, while it is used as voltage input end；The base stage of NPN triode Connect the negative terminal and current regulator diode anode of voltage-regulator diode, the positive ending grounding of voltage-regulator diode；The emitter stage of NPN triode As the output end of first via output voltage, meanwhile, it is connected with one end of isolation resistance, the other end of isolation resistance is as second The output end of road output voltage；The input of Three-end voltage stabilizer is connected with the output end of the second road output voltage, three-terminal voltage-stabilizing The output end of device is connected to the output end of the second road output voltage by the first divider resistance, is arrived by the second divider resistance Ground, the earth terminal of Three-end voltage stabilizer are connected to ground, the output of the output end of Three-end voltage stabilizer as the 3rd road output voltage End, its voltage is a fixed value, and the ratio by adjusting the first divider resistance and the second divider resistance adjusts the second tunnel output electricity The magnitude of voltage of pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721141461.6U CN207083015U (en) | 2017-09-07 | 2017-09-07 | A kind of mu balanced circuit with multiple-channel output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721141461.6U CN207083015U (en) | 2017-09-07 | 2017-09-07 | A kind of mu balanced circuit with multiple-channel output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207083015U true CN207083015U (en) | 2018-03-09 |
Family
ID=61419227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721141461.6U Expired - Fee Related CN207083015U (en) | 2017-09-07 | 2017-09-07 | A kind of mu balanced circuit with multiple-channel output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207083015U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108447434A (en) * | 2018-03-20 | 2018-08-24 | 京东方科技集团股份有限公司 | A kind of negative pressure output circuit and display panel |
| CN110837269A (en) * | 2019-10-09 | 2020-02-25 | 广州邦讯信息系统有限公司 | Multi-output constant voltage circuit and voltage-stabilized power supply |
| GB2602127A (en) * | 2020-12-18 | 2022-06-22 | Murata Manufacturing Co | Adjustable three output DC voltage supply with short circuit protection |
-
2017
- 2017-09-07 CN CN201721141461.6U patent/CN207083015U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108447434A (en) * | 2018-03-20 | 2018-08-24 | 京东方科技集团股份有限公司 | A kind of negative pressure output circuit and display panel |
| CN110837269A (en) * | 2019-10-09 | 2020-02-25 | 广州邦讯信息系统有限公司 | Multi-output constant voltage circuit and voltage-stabilized power supply |
| GB2602127A (en) * | 2020-12-18 | 2022-06-22 | Murata Manufacturing Co | Adjustable three output DC voltage supply with short circuit protection |
| GB2602127B (en) * | 2020-12-18 | 2024-04-24 | Murata Manufacturing Co | Adjustable three output DC voltage supply with short circuit protection |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180309 Termination date: 20200907 |