CN106208767B - A kind of power supply of low pressure controller dynamic stability - Google Patents
A kind of power supply of low pressure controller dynamic stability Download PDFInfo
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- CN106208767B CN106208767B CN201610701596.7A CN201610701596A CN106208767B CN 106208767 B CN106208767 B CN 106208767B CN 201610701596 A CN201610701596 A CN 201610701596A CN 106208767 B CN106208767 B CN 106208767B
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- resistance
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- rectifier bridge
- capacitance
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
The present invention relates to a kind of power supplys of low pressure controller dynamic stability.The circuit of this power supply is made of two-way, it is that mutual inductor secondary side connects rectifier bridge all the way, then then rectified bridge DB1, field-effect tube Q1, resistance R1, triode Q2 are connected with integrated operational amplifier, resistance R2, voltage-stabiliser tube D1, resistance R3, resistance R4 again after effective connection；Last connecting resistance R5, resistance R6, voltage-stabiliser tube D3, capacitance C1.Another way power transformer T1 meets rectifier bridge DB2, capacitance C1, diode D2, and resistance R6 is connected.When normal main road has electricity, mutual inductor induces voltage by dynamic regulation circuit by major loop, ensures to provide stabilized power source for subsequent conditioning circuit.When major loop out of power, alternating current provides stabilized power source by transformer for subsequent conditioning circuit.When major loop and transformer have electricity simultaneously, diode D2, D4 form "or" relationship, ensure that subsequent conditioning circuit obtains stable power supply.
Description
Technical field
The invention belongs to a kind of low pressure controller power supplys, more particularly to a kind of power supply of low pressure controller dynamic stability.
Background technology
It is higher and higher for the requirement of low-voltage variation electric appliance as low-voltage electrical apparatus develops to intellectualization times, not only limit
In current protection and residual current protecting, also there are the functions such as the measurement, communication, frequency analysis of electrical energy parameter.All these
Function must be set up on stable power supply basis.The power supply of original low pressure controller is typically all directly from major loop sense
The voltage used in subsequent conditioning circuit should be obtained through voltage stabilizing, filtering, amplitude limit by source element；Either directly electricity is taken from control loop
Voltage needed for subsequent conditioning circuit is obtained through transformer.All there is certain disadvantage in both.The first only has voltage stabilizing, filtering, amplitude limit, does not have
There is dynamic regulation circuit, when voltage instability timing occurs in major loop, power circuit will be unstable, can not so as to cause controller
Normal work.Second is to take the control loop of electricity that will power off from major loop, in this way when major loop breaks down and trips
It is just not easy to check the fault condition of controller, timely and effective cannot debug.
Invention content
The present invention provides one kind for technical problem present in solution known technology effectively to ensure to occur voltage not
When stablizing, power circuit stabilization and a kind of low pressure controller dynamic that can effectively debug when major loop breaks down and trips
Stable power supply.
The present invention is adopted the technical scheme that solve technical problem present in known technology：It includes two roads electricity
Source；The two road power supplys power supply all the way therein is that mutual inductor secondary side connects the first rectifier bridge (DB1) input terminal, described first
The drain electrode of the one termination field-effect tube (Q1) of rectifier bridge (DB1) output end, the other end of the first rectifier bridge (DB1) output end
Connect the source electrode of the field-effect tube (Q1)；The drain electrode of the one termination field-effect tube (Q1) of first resistor (R1) and the four or two pole
The anode for managing (D4), the grid of another termination field-effect tube (Q1) of the first resistor (R1) while connecing triode
(Q2) collector；The emitter of the triode (Q2) is grounded；The base stage of the triode (Q2) connects integrated operational amplifier
(U1) output end；One termination integrated operational amplifier (U1) positive input of second resistance (R2), second electricity
Hinder the other end ground connection of (R2)；The cathode of first voltage-stabiliser tube (D1) connects one end of the 4th diode (D4), first voltage-stabiliser tube
(D1) anode connect one end of 3rd resistor (R3), the other end of the 3rd resistor (R3) and the 4th resistance (R4) one end phase
It connects, and connects the negative input of the integrated operational amplifier (U1)；The other end of 4th resistance (R4) is grounded；5th electricity
Hinder the positive input of the termination integrated operational amplifier (U1) of (R5), the 5th resistance (R5) other end and the 6th
One end of resistance (R6) and the cathode terminal of third voltage-stabiliser tube (D3) connect；Another termination described first of 6th resistance (R6)
The cathode terminal of voltage-stabiliser tube (D1)；The plus earth of third voltage-stabiliser tube (D3), the second capacitance (C2) are connected in parallel on the 6th resistance
(R6) anode tap of the other end and third voltage-stabiliser tube (D3)；The transformer (T1) of two road power supplys another power supply therein
The input terminal of the second rectifier bridge (DB2) is connect, the first capacitance (C1) is connected in parallel on the output end of the second rectifier bridge (DB2)；Described first
The anode of capacitance (C1) connects the anode of the second diode (D2), the cathode ground connection of first capacitance (C1), the two or two pole
The cathode of pipe (D2) connects the other end of the 6th resistance (R6).
The invention has the advantages and positive effects that：1, when normal main road has electricity, mutual inductor is induced by major loop
Voltage ensures to provide stabilized power source for subsequent conditioning circuit by dynamic regulation circuit.2, when major loop out of power, alternating current passes through transformation
Device provides stabilized power source for subsequent conditioning circuit.3, when major loop and transformer have electricity simultaneously, diode D2, D4 form "or" relationship,
Ensure that subsequent conditioning circuit obtains stable power supply.
Description of the drawings
Fig. 1 is the circuit diagram of the present invention.
Specific implementation mode
For that can further appreciate that present disclosure, feature and effect, the following examples are hereby given, and coordinates attached drawing detailed
It is described as follows：
As shown in Figure 1：Wherein power supply is that mutual inductor secondary side connects rectifier bridge DB1 input terminals, rectifier bridge DB1 positive outputs all the way
The drain electrode of the one termination field-effect tube Q1 at end, another termination field-effect tube Q1 source electrodes of rectifier bridge DB1 negative output terminals；Resistance R1 mono-
It terminates the anode of the drain electrode and diode D4 of field-effect tube Q1, another termination field-effect tube Q1 grids of resistance R1 while connecing three
The collector of pole pipe Q2；The emitter of triode Q2 is grounded；The base stage of triode Q2 connects the output end of integrated operational amplifier U1；
A termination integrated operational amplifier U1 of resistance R2, positive input, the other end ground connection of resistance R2, the cathode of voltage-stabiliser tube D1 connect
One end of the cathode of diode D4, one end of anode connecting resistance R3 of voltage-stabiliser tube D1, the other end of resistance R3 and resistance R4 connects,
And connect the negative input of integrated operational amplifier U1；The other end of resistance R4 is grounded.A termination integrated computation of resistance R5 is put
The positive input of big device U1, the resistance R5 other ends connect with the cathode terminal of one end of resistance R6 and voltage-stabiliser tube D3.Resistance R6's
The cathode terminal of another termination voltage-stabiliser tube D1；The plus earth of voltage-stabiliser tube D3, capacitance C2 are connected in parallel on the other end and the voltage stabilizing of resistance R6
On the cathode terminal of pipe D3.Another way power transformer T1 connects the input terminal of rectifier bridge DB2, and capacitance C1 is connected in parallel on the output of rectifier bridge
End；The anode of capacitance C1 connects the anode of diode D2, the other end of the cathode connecting resistance R6 of diode D2.
The function of the present invention describes：The alternating voltage that mutual inductor is induced by major loop, alternating voltage are rectified
Bridge DB1 becomes direct current, and there are current potentials for one end of resistance R6, so that voltage-stabiliser tube D3 conductings, the cathode terminal electricity of voltage-stabiliser tube D3
Position is 9.1v.Because of R5=2*R2；So U+=[R2/ (R2+R5)] * 9.1=3v；U under the conditions of ideal amplifier-=3v, because
R3=3.3*R4, so voltage-stabiliser tube D1 anode voltages are 13v, because the potential difference of voltage-stabiliser tube D1 is 9.1v, voltage-stabiliser tube
Cathode terminal voltage is 22.1v, so being 22v for the power supply that rear circuit provides.The output end of integrated transporting discharging U1 is zero, triode Q2
It being not turned on, field-effect tube Q1 conductings, rectification bridge output end unloads stream, and both end voltage reduces, and the cathode terminal voltage of voltage-stabiliser tube D1 reduces,
The voltage between resistance R3 and resistance R4 reduces simultaneously.When less than 3v, integrated transporting discharging U1 exports high level, and triode Q2 is led
Logical, the drain electrode of field-effect tube Q1 is low level, and Q1 is not turned on, and stream is unloaded in rectifier bridge DB1 stoppings, and both end voltage increases.Diode D4
Prevent reverse-conducting；The cathode terminal voltage of voltage-stabiliser tube D1 increases to 3v, and integrated transporting discharging output is zero.Dynamic variation like this,
The both ends capacitance C2 are made to obtain burning voltage.Another way is then to obtain desired voltage by AC transformer, then pass through rectification
Bridge DB2 and capacitance C1 obtain burning voltage, and stabilized power source is provided for capacitance C2 subsequent conditioning circuits.
Claims (1)
1. a kind of power supply of low pressure controller dynamic stability, it is characterized in that：It includes two road power supplys；The two road power supplys its
In power supply all the way be that mutual inductor secondary side connects the first rectifier bridge (DB1) input terminal, the first rectifier bridge (DB1) output end
The drain electrode of one termination field-effect tube (Q1), another termination field-effect tube (Q1) of the first rectifier bridge (DB1) output end
Source electrode；The anode of the drain electrode and the 4th diode (D4) of the one termination field-effect tube (Q1) of first resistor (R1), it is described
The grid of another termination field-effect tube (Q1) of first resistor (R1) while the collector for meeting triode (Q2)；Described three
The emitter of pole pipe (Q2) is grounded；The base stage of the triode (Q2) connects the output end of integrated operational amplifier (U1)；Second electricity
Hinder termination integrated operational amplifier (U1) positive input of (R2), the other end ground connection of the second resistance (R2)；
The cathode of first voltage-stabiliser tube (D1) connects one end of the 4th diode (D4), and the anode of first voltage-stabiliser tube (D1) connects 3rd resistor
(R3) the other end of one end, the 3rd resistor (R3) and one end of the 4th resistance (R4) connects, and connects the integrated computation
The negative input of amplifier (U1)；The other end of 4th resistance (R4) is grounded；Described in one termination of the 5th resistance (R5)
One end of the positive input of integrated operational amplifier (U1), the 5th resistance (R5) other end and the 6th resistance (R6) and
The cathode terminal of three voltage-stabiliser tubes (D3) connects；The cathode of another termination first voltage-stabiliser tube (D1) of 6th resistance (R6)
End；The plus earth of third voltage-stabiliser tube (D3), the second capacitance (C2) are connected in parallel on the other end and third of the 6th resistance (R6)
The anode tap of voltage-stabiliser tube (D3)；The transformer (T1) of two road power supplys another power supply therein connects the second rectifier bridge (DB2)
Input terminal, the first capacitance (C1) is connected in parallel on the output end of the second rectifier bridge (DB2)；The anode of first capacitance (C1) connects
The anode of two diodes (D2), the cathode ground connection of first capacitance (C1), the cathode of second diode (D2) connects described
The other end of 6th resistance (R6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701596.7A CN106208767B (en) | 2016-08-19 | 2016-08-19 | A kind of power supply of low pressure controller dynamic stability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701596.7A CN106208767B (en) | 2016-08-19 | 2016-08-19 | A kind of power supply of low pressure controller dynamic stability |
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| Publication Number | Publication Date |
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| CN106208767A CN106208767A (en) | 2016-12-07 |
| CN106208767B true CN106208767B (en) | 2018-08-21 |
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| CN201610701596.7A Active CN106208767B (en) | 2016-08-19 | 2016-08-19 | A kind of power supply of low pressure controller dynamic stability |
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| CN109194358B (en) * | 2018-09-30 | 2020-05-26 | 蔡长明 | Hydrology water resource data transmission system based on thing networking |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0777509B2 (en) * | 1986-05-30 | 1995-08-16 | キヤノン株式会社 | Power supply |
| JP4620821B2 (en) * | 1998-10-19 | 2011-01-26 | トムソン コンシユーマ エレクトロニクス インコーポレイテツド | Power supply device for video equipment |
| CN101483394B (en) * | 2009-02-11 | 2010-09-01 | 重庆电力科学试验研究院 | Analog low voltage electric power system |
| CN101534587B (en) * | 2009-03-27 | 2012-06-27 | 陕西科技大学 | Commercial power LED constant current driver |
| CN202513838U (en) * | 2012-04-01 | 2012-10-31 | 德阳汇川科技有限公司 | Low voltage power carrier communication power supply |
| CN203217411U (en) * | 2013-03-12 | 2013-09-25 | 深圳创维数字技术股份有限公司 | Low-voltage stabilized power supply |
| CN104090617A (en) * | 2014-07-18 | 2014-10-08 | 周国文 | Low-dropout linear regulator of improved digital-analog hybrid circuit |
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