CN106200746A - A kind of linear series mu balanced circuit - Google Patents
A kind of linear series mu balanced circuit Download PDFInfo
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- CN106200746A CN106200746A CN201610656019.0A CN201610656019A CN106200746A CN 106200746 A CN106200746 A CN 106200746A CN 201610656019 A CN201610656019 A CN 201610656019A CN 106200746 A CN106200746 A CN 106200746A
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- audion
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
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- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
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- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
The invention discloses a kind of linear series mu balanced circuit, including: voltage input section, reference voltage part, relatively amplifier section and protection circuit part, described voltage input section accesses power supply, power supply is provided to power for circuit, the voltage that described reference voltage part is produced by Zener diode provides stable voltage to input for comparing amplifier section, electric current is amplified by the described amplifier section that compares by audion, described protection circuit part is when Zener diode output electric current is excessive or voltage exports partial short circuit, the base current of audion is shunted and limits.The linear series mu balanced circuit of the present invention can carry out voltage stabilizing to large range of input voltage, the current requirements loaded by adjustment revises the connection complex method of audion, when the situations such as short circuit or overload occur, the element in this mu balanced circuit can be made not to be damaged, strengthening its stability, circuit reduces cost, output voltage stabilization, power consumption is relatively low, meets load request.
Description
Technical field
The present invention relates to mu balanced circuit technical field, particularly relate to a kind of linear series mu balanced circuit.
Background technology
Power circuit is divided into linear voltage-stabilizing circuit and switching mode mu balanced circuit, and at present, most of electronic equipments are all to use
Linear voltage-stabilizing circuit, works in linear zone by making the power device in its circuit adjust pipe, comes by adjusting the pressure drop between pipe
Stable output；Small part equipment uses switching mode mu balanced circuit so that it is voltage-reg-ulator tube is operated on off state, through energy storage electricity
The conversion on road carries out burning voltage output.
In the prior art, the voltage ripple of the mu balanced circuit output of switching mode is relatively big, can cause output instability, for
Linear voltage-stabilizing circuit, using three sections of voltages to export integrated regulator costs can be the highest, and power consumption also can be very big, dissipates integrated chip
Heat request is higher.
Therefore, those skilled in the art need urgently solve technical problem exactly: how to innovate
A kind of measure is proposed, it is provided that a kind of linear series mu balanced circuit, it is provided that stable voltage output, to overcome electricity of the prior art
The shortcoming that pressure output ripple is unstable, cost is high, power consumption is big.
Summary of the invention
For solving the problems referred to above, the invention discloses a kind of linear series mu balanced circuit, to solve electricity of the prior art
The shortcoming that pressure output is unstable, ripple is unstable, cost is high, power consumption is big.
Described linear series mu balanced circuit includes: voltage input section, reference voltage part, compare amplifier section and protection
Circuit part；
Described voltage input section accesses power supply, provides power supply to power for linear series mu balanced circuit, passes through current-limiting resistance
Voltage is provided to the colelctor electrode of audion with diode；
The base stage that the voltage that described reference voltage part is produced by Zener diode is audion provides stable voltage
Input；
Transistor base electric current is amplified by the described amplifier section that compares by adjustment resistance, uses multiple resistance to adjust
Mode meet the requirement of High-current output；
Described protection circuit part is when Zener diode output electric current is excessive or voltage exports partial short circuit, to three poles
The base current of pipe shunts and limits.
In another embodiment based on above-mentioned linear series mu balanced circuit, described voltage input section includes current-limiting resistance
R1 and diode D1, by the metering function of current-limiting resistance R1 and the filtering of diode D1 and rectified action, puts for described comparison
Major part provides required electric current, and described current-limiting resistance R1 connects with diode D1.
In another embodiment based on above-mentioned linear series mu balanced circuit, described reference voltage part includes voltage stabilizing two pole
Pipe DZ1, described Zener diode DZ1 work under reverse breakdown state, and Zener diode DZ1 provides steady for comparing amplifier section
Fixed voltage.
In another embodiment based on above-mentioned linear series mu balanced circuit, the described amplifier section that compares includes: audion
Q1, audion Q2, resistance R2, resistance R3, resistance R4, described resistance R2 one end and voltage input section connect, the other end and institute
The colelctor electrode stating audion Q2 connects, and described resistance R3 one end and voltage input section connect, the other end and described audion Q1
Colelctor electrode connect, described resistance R4 one end and voltage input section connect, and the base stage of the other end and described audion Q1 connects.
In another embodiment based on above-mentioned linear series mu balanced circuit, described protection circuit part includes diode
D2, described diode D2 are used for adjusting audion Q1 base current, shunt audion Q1 base current and current limliting.
In another embodiment based on above-mentioned linear series mu balanced circuit, the duty of described Zener diode DZ1
There are two kinds:
When the base current of audion Q1 is less than when setting threshold value, and the applied voltage of Zener diode DZ1 is because less than it
Breakdown reverse voltage and end, serial regulating circuit normally works；
When the base current of audion Q1 is more than when setting threshold value, and stabilivolt is breakdown, plays pressure stabilization function.
In another embodiment based on above-mentioned linear series mu balanced circuit, described audion Q1, the power of audion Q2
Combination includes:
Audion Q1 and audion Q2 is small-power NPN audion, then the colelctor electrode output electric current of audion Q2 is:
I=IB2β2=IB1β1β2
Wherein, IB1For the base current of audion Q1, IB2For the base current of audion Q2, β1Amplification for audion Q1
Multiple, β2The amplification of audion Q2；
The amplification of circuit changes, the load that drives is little with amplification β of two audions, and audion is sent out
Heat is big, affects amplification efficiency；
Audion Q1 and audion Q2 is high-power, a low power NPN audion, its amplification two three
Amplification β of pole pipe and change, in the current range that it allows, audion caloric value is good；
Audion Q1 and audion Q2 is powerful NPN audion, the times magnification of its two audions of amplification
Counting β and change, amplification effect is good.
Compared with prior art, the present invention includes advantages below:
Large range of input voltage can be carried out surely by the voltage input section of the linear series mu balanced circuit of the present invention
Pressure, is compared amplifier section and can be revised the connection complex method of audion by the current requirements that adjustment loads, short when occurring
During the situation such as road or overload, make the element in this mu balanced circuit not be damaged by protection circuit part, strengthen its stability,
This linear series mu balanced circuit is used to not only reduce cost, and output voltage stabilization, power consumption is relatively low, meets load request.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have the accompanying drawing used in technology description to do one to introduce simply, it should be apparent that, the accompanying drawing in describing below is the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to this
A little accompanying drawings obtain other accompanying drawing.
Fig. 1 is the electrical block diagram of an embodiment of the linear series mu balanced circuit of the present invention；
In figure: 1 voltage input section, 2 reference voltage parts, 3 compare amplifier section, 4 protection circuit parts.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
It is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
A kind of linear series mu balanced circuit and the detection method that there is provided the present invention with embodiment below in conjunction with the accompanying drawings are carried out
Illustrate in greater detail.
Fig. 1 is the electrical block diagram of an embodiment of the linear series mu balanced circuit of the present invention, as it is shown in figure 1,
This linear series mu balanced circuit includes:
Voltage input section 1, reference voltage part 2, compare amplifier section 3 and protection circuit part 4；
Described voltage input section 1 accesses power supply, provides power supply to power for linear series mu balanced circuit, passes through current-limiting resistance
Voltage is provided to the colelctor electrode of audion with diode；
The base stage that the voltage that described reference voltage part 2 is produced by Zener diode is audion provides stable voltage
Input；
Transistor base electric current is amplified by the described amplifier section 3 that compares by adjustment resistance, uses multiple resistance to adjust
Whole mode meets the requirement of High-current output；
Described protection circuit part 4 is when Zener diode output electric current is excessive or voltage exports partial short circuit, to three
The base current of pole pipe shunts and limits.
Described voltage input section 1 includes current-limiting resistance R1 and diode D1, by the metering function of current-limiting resistance R1 and
The filtering of diode D1 and rectified action, provide required electric current, described current-limiting resistance R1 and two poles for the described amplifier section that compares
Pipe D1 connects.
Described reference voltage part 2 includes Zener diode DZ1, and described Zener diode DZ1 is under reverse breakdown state
Work, Zener diode DZ1 is for comparing the voltage that amplifier section provides stable.
The described amplifier section 3 that compares includes: audion Q1, audion Q2, resistance R2, resistance R3, resistance R4, described resistance
R2 one end and voltage input section connect, and the colelctor electrode of the other end and described audion Q2 connects, described resistance R3 one end and electricity
Pressure importation connects, and the colelctor electrode of the other end and described audion Q1 connects, described resistance R4 one end and voltage input section
Connecting, the base stage of the other end and described audion Q1 connects.
Described protection circuit part 4 includes that diode D2, described diode D2 are used for adjusting audion Q1 base current, right
Audion Q1 base current carries out shunting and current limliting.
The duty of described Zener diode DZ1 has two kinds:
When the base current of audion Q1 is less than when setting threshold value, and the applied voltage of Zener diode DZ1 is because less than it
Breakdown reverse voltage and end, serial regulating circuit normally works；
When the base current of audion Q1 is more than when setting threshold value, and stabilivolt is breakdown, plays pressure stabilization function.
Described audion Q1, the power combination of audion Q2 include:
Audion Q1 and audion Q2 is small-power NPN audion, then the colelctor electrode output electric current of audion Q2 is:
I=IB2β2=IB1β1β2
Wherein, IB1For the base current of audion Q1, IB2For the base current of audion Q2, β1Amplification for audion Q1
Multiple, β2The amplification of audion Q2；
The amplification of circuit changes, the load that drives is little with amplification β of two audions, and audion is sent out
Heat is big, affects amplification efficiency；
Audion Q1 and audion Q2 is high-power, a low power NPN audion, its amplification two three
Amplification β of pole pipe and change, in the current range that it allows, audion caloric value is good；
Audion Q1 and audion Q2 is powerful NPN audion, the times magnification of its two audions of amplification
Counting β and change, amplification effect is good.
Different load resistance resistances can change the load capacity of this circuit.
Arranging input voltage is 29V, and resistance R2 is 100K, and the magnitude of voltage measuring the load resistance obtained is as shown in table 1.
| Load current (mA) | Load resistance magnitude of voltage (V) |
| 1 | 11.93 |
| 2 | 11.9 |
| 3 | 11.87 |
| 4 | 11.87 |
| 5 | 11.87 |
| 6 | 11.84 |
| 7 | 11.84 |
| 8 | 11.84 |
| 9 | 11.84 |
| 10 | 11.84 |
| 11 | 11.84 |
| 12 | 11.37 |
| 13 | 10.6 |
| 14 | 9.02 |
| 15 | 8.31 |
| 16 | 7.6 |
| 17 | 6.19 |
| 18 | 5.47 |
| 19 | 4.64 |
| 20 | 2.48 |
| 21 | 1.64 |
Table 1
Arrange input voltage to remain 29V, resistance R2 and become 20K, measure magnitude of voltage such as table 2 institute of the load resistance obtained
Show.
Table 2
The data of contrast Tables 1 and 2 can draw, when resistance diminishes, its load capacity can become big, as shown in table 1, when
The when that load current being 12mA, load voltage can significantly diminish, and when load current is increasing, its load voltage is also
More and more less；As can be found from Table 2, load current is when 12mA, and what load voltage can't be unexpected diminishes, but when load electricity
The when of having flowed to 52mA, load voltage just can significantly diminish.Contrast two tables of data to understand, change the colelctor electrode of audion
Resistance, the load capacity of this circuit also can become big.
Above a kind of linear series mu balanced circuit provided by the present invention and detection method are described in detail, herein
In apply specific case principle and the embodiment of the present invention be set forth, the explanation of above example is only intended to side
Assistant solves method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the think of of the present invention
Thinking, the most all will change, in sum, it is right that this specification content should not be construed as
The restriction of the present invention.
Finally it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention,
Although being described in detail the present invention with reference to previous embodiment, for a person skilled in the art, it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent,
All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (7)
1. a linear series mu balanced circuit, it is characterised in that including: voltage input section, reference voltage part, compare amplification
Part and protection circuit part；
Described voltage input section accesses power supply, provides power supply to power, by current-limiting resistance and two for linear series mu balanced circuit
Pole pipe provides voltage to the colelctor electrode of audion；
The base stage that the voltage that described reference voltage part is produced by Zener diode is audion provides stable voltage input；
Transistor base electric current is amplified by the described amplifier section that compares by adjustment resistance, uses the side that multiple resistance adjusts
Formula meets the requirement of High-current output；
Described protection circuit part is when Zener diode output electric current is excessive or voltage exports partial short circuit, to audion
Base current shunts and limits.
Linear series mu balanced circuit the most according to claim 1, it is characterised in that described voltage input section includes current limliting
Resistance R1 and diode D1, by the metering function of current-limiting resistance R1 and the filtering of diode D1 and rectified action, for described ratio
Relatively amplifier section provides required electric current, and described current-limiting resistance R1 connects with diode D1.
Linear series mu balanced circuit the most according to claim 1, it is characterised in that described reference voltage part includes voltage stabilizing
Diode DZ1, described Zener diode DZ1 work under reverse breakdown state, and Zener diode DZ1 carries for comparing amplifier section
For stable voltage.
Linear series mu balanced circuit the most according to claim 1, it is characterised in that the described amplifier section that compares includes: three
Pole pipe Q1, audion Q2, resistance R2, resistance R3, resistance R4, described resistance R2 one end and voltage input section connect, the other end
Connecting with the colelctor electrode of described audion Q2, described resistance R3 one end and voltage input section connect, the other end and described three poles
The colelctor electrode of pipe Q1 connects, and described resistance R4 one end and voltage input section connect, the other end and the base stage of described audion Q1
Connect.
Linear series mu balanced circuit the most according to claim 1, it is characterised in that described protection circuit part includes two poles
Pipe D2, described diode D2 are used for adjusting audion Q1 base current, shunt audion Q1 base current and current limliting.
Linear series mu balanced circuit the most according to claim 3, it is characterised in that the work of described Zener diode DZ1
State has two kinds:
When the base current of audion Q1 is less than when setting threshold value, and the applied voltage of Zener diode DZ1 is because of reverse less than it
Breakdown voltage and end, serial regulating circuit normally works；
When the base current of audion Q1 is more than when setting threshold value, and stabilivolt is breakdown, plays pressure stabilization function.
Linear series mu balanced circuit the most according to claim 4, it is characterised in that described audion Q1, audion Q2
Power combination includes:
Audion Q1 and audion Q2 is small-power NPN audion, then the colelctor electrode output electric current of audion Q2 is:
I=IB2β2=IB1β1β2
Wherein, IB1For the base current of audion Q1, IB2For the base current of audion Q2, β1Times magnification for audion Q1
Number, β2The amplification of audion Q2；
The amplification of circuit changes, the load that drives is little, audion caloric value with amplification β of two audions
Greatly, amplification efficiency is affected；
Audion Q1 and audion Q2 is high-power, a low power NPN audion, two audions of its amplification
Amplification β and change, in the current range that it allows, audion caloric value is good；
Audion Q1 and audion Q2 is powerful NPN audion, amplification β of its two audions of amplification and
Change, amplification effect is good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610656019.0A CN106200746B (en) | 2016-08-11 | 2016-08-11 | A kind of linear series regulator circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610656019.0A CN106200746B (en) | 2016-08-11 | 2016-08-11 | A kind of linear series regulator circuit |
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| CN106200746A true CN106200746A (en) | 2016-12-07 |
| CN106200746B CN106200746B (en) | 2018-06-08 |
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| CN201610656019.0A Active CN106200746B (en) | 2016-08-11 | 2016-08-11 | A kind of linear series regulator circuit |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6538492B2 (en) * | 2000-06-08 | 2003-03-25 | Murata Manufacturing Co., Ltd. | Power supply, electronic device using the same, and output |
| CN201210261Y (en) * | 2008-06-27 | 2009-03-18 | 深圳市麦格米特驱动技术有限公司 | Highly precise low voltage difference linear voltage stabilizing circuit |
| US7723968B2 (en) * | 2007-03-06 | 2010-05-25 | Freescale Semiconductor, Inc. | Technique for improving efficiency of a linear voltage regulator |
| CN102736654A (en) * | 2012-07-25 | 2012-10-17 | 周芸 | High-current adjustable voltage stabilizer |
| CN203180774U (en) * | 2013-03-28 | 2013-09-04 | 上海闻江电气控制设备有限公司 | Switch voltage stabilizing circuit |
| CN103941794A (en) * | 2013-11-27 | 2014-07-23 | 深圳市伟创电气有限公司 | Series connection type transistor voltage stabilizing circuit with differential amplification function |
| CN205983279U (en) * | 2016-08-11 | 2017-02-22 | 东莞博力威电池有限公司 | Linear series connection voltage stabilizing circuit |
-
2016
- 2016-08-11 CN CN201610656019.0A patent/CN106200746B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6538492B2 (en) * | 2000-06-08 | 2003-03-25 | Murata Manufacturing Co., Ltd. | Power supply, electronic device using the same, and output |
| US7723968B2 (en) * | 2007-03-06 | 2010-05-25 | Freescale Semiconductor, Inc. | Technique for improving efficiency of a linear voltage regulator |
| CN201210261Y (en) * | 2008-06-27 | 2009-03-18 | 深圳市麦格米特驱动技术有限公司 | Highly precise low voltage difference linear voltage stabilizing circuit |
| CN102736654A (en) * | 2012-07-25 | 2012-10-17 | 周芸 | High-current adjustable voltage stabilizer |
| CN203180774U (en) * | 2013-03-28 | 2013-09-04 | 上海闻江电气控制设备有限公司 | Switch voltage stabilizing circuit |
| CN103941794A (en) * | 2013-11-27 | 2014-07-23 | 深圳市伟创电气有限公司 | Series connection type transistor voltage stabilizing circuit with differential amplification function |
| CN205983279U (en) * | 2016-08-11 | 2017-02-22 | 东莞博力威电池有限公司 | Linear series connection voltage stabilizing circuit |
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| Publication number | Publication date |
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| CN106200746B (en) | 2018-06-08 |
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Denomination of invention: Linear series voltage stabilizing circuit Effective date of registration: 20190507 Granted publication date: 20180608 Pledgee: China Co truction Bank Corp Dongguan branch Pledgor: DongGuan Greenway Battery Co., Ltd. Registration number: 2019440000172 |
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Address after: 523000 Tongsha New Industrial Park, Dongcheng Street, Dongguan City, Guangdong Province Patentee after: Guangdong Boliwei Technology Co., Ltd. Address before: 523000 new industrial zone, Dongcheng District, Guangdong, Dongguan Patentee before: DongGuan Greenway Battery Co., Ltd. |
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Date of cancellation: 20200528 Granted publication date: 20180608 Pledgee: China Co. truction Bank Corp Dongguan branch Pledgor: DONGGUAN GREENWAY BATTERY Co.,Ltd. Registration number: 2019440000172 |