CN207503083U - A kind of bypass constant-current source circuit in parallel - Google Patents
A kind of bypass constant-current source circuit in parallel Download PDFInfo
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- CN207503083U CN207503083U CN201721494642.7U CN201721494642U CN207503083U CN 207503083 U CN207503083 U CN 207503083U CN 201721494642 U CN201721494642 U CN 201721494642U CN 207503083 U CN207503083 U CN 207503083U
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Abstract
The utility model is related to electronic circuit fields, espespecially a kind of bypass constant-current source circuit in parallel, the utility model includes a controllable load, the controllable load is connected in parallel on load above and the controllable load includes operational amplifier IC1 and feedback unit, electric current in bypass is flow to by feedback unit on operational amplifier IC1, operational amplifier IC1 exports an electric current corresponding with main line according to the size of current of feedback, to achieve the effect that total output current is constant, characteristic with outputting current steadily, solving conventional serial constant-current source, performance occur undesirable, the problem of easily unstable, and improve power efficiency.
Description
Technical field
The utility model is related to electronic circuit field, espespecially a kind of bypass constant-current source circuit in parallel.
Background technology
Constant-current source is that a widely used component, constant-current source are the current sources that output current is kept constant in circuit, permanent
The essence in stream source is that electric current is fed back using device, the power supply state of dynamic regulation equipment, so that electric current tends to be permanent
It is fixed.As long as electric current can be obtained, it is possible to feedback is effectively formed, so as to establish constant-current source.
As shown in fig. 6, universal controlled constant current source circuit is composed of metal-oxide-semiconductor, diode and multiple resistance,
In, in order to ensure that the drain current of metal-oxide-semiconductor is stablized, the cathode of the drain electrode of metal-oxide-semiconductor and diode connects, the anode of diode with
The grid connection of metal-oxide-semiconductor, by diode by the grid of current feedback to metal-oxide-semiconductor, so as to be adjusted using the electric current on grid
The output current of drain electrode is to achieve the effect that output constant current electric current.
But this constant-current source is by the way of series connection and load in series is on a Ge Zhi roads, results in constant-current source appearance
The problem of performance is undesirable, easily unstable.
Invention content
To solve the above problems, the utility model provides a kind of bypass constant-current source circuit in parallel, there is outputting current steadily,
It is undesirable, easily unstable to solve the problems, such as that performance occurs in conventional constant current source.
To achieve the above object, the technical solution adopted in the utility model is：A kind of bypass constant-current source circuit in parallel, including
There are controlled constant-current source and load RL, the controlled constant-current source is connected with load RL, has further included a controllable load, described controllable
Load be connected in parallel on load RL on, wherein, the controllable load include operational amplifier IC1, reference power supply, bypass resistance R1,
Feedback unit, one end of bypass resistance R1, one end of load RL are connect with the anode of controlled constant-current source, and bypass resistance R1's is another
The cathode of one end and controlled constant-current source connects, and the other end for loading RL is connected by the cathode of sampling resistor R2 and controlled constant-current source
It connects, the one end for loading RL connects the inverting input of operational amplifier IC1, the output of operational amplifier IC1 by feedback unit
The input terminal respectively with one end of bypass resistance R1, feedback unit is held to connect, wherein, the positive input of operational amplifier IC1
Connect reference power supply.
Further, the feedback unit includes first resistor R3, second resistance R4, one end of first resistor R3 and fortune
The inverting input connection of amplifier IC1 is calculated, the other end is connect with the output terminal of operational amplifier IC1, the second resistance R4
One end with load RL one end connect, the other end is connect with the inverting input of operational amplifier IC1, using the above scheme,
In the current feedback to the operational amplifier IC1 of the first resistor R3 outputs, the electric current of the second resistance R4 outputs is anti-
It is fed on the operational amplifier IC1.
Further, the anode of source electrode and controlled constant-current source for having further included metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q1 connects, MOS
The grid of pipe Q1 is connect with the output terminal of operational amplifier IC1, and the drain electrode of metal-oxide-semiconductor Q1 is connect with one end of bypass resistance R1, is adopted
With said program, change voltage using metal-oxide-semiconductor to control the characteristic of electric current, and the driving force of metal-oxide-semiconductor Q1 compares operational amplifier
IC1 is big, and making can be with bigger from the electric current that metal-oxide-semiconductor Q1 flows out.
To achieve the above object, another technical solution of the utility model use is：A kind of bypass constant-current source circuit in parallel,
Include controlled constant-current source and load RL, the controlled constant-current source is connected with load RL, has further included a controllable load, described
Controllable load is connected in parallel on load RL, wherein, the controllable load includes operational amplifier IC1, reference power supply, bypass resistance
R1, feedback unit and for detect one end of the operational amplifier IC2, the bypass resistance R1 of electric current connection controlled constant-current source
Anode, the other end connect controlled constant-current source cathode, sampling resistor R2 one end connection controlled constant-current source anode, the other end
By loading the cathode of RL connection controlled constant-current sources, the in-phase input end of operational amplifier IC2, inverting input respectively with sampling
The both ends connection of resistance R2, the output terminal of operational amplifier IC2 pass through feedback unit and the inverting input of operational amplifier IC1
Connection, one end of the output terminal connection bypass resistance R1 of operational amplifier IC1, the in-phase input end connection of operational amplifier IC1
Reference power supply.
Further, metal-oxide-semiconductor Q1, the grid of the output terminal connection metal-oxide-semiconductor Q1 of operational amplifier IC1, metal-oxide-semiconductor have been further included
The source electrode of Q1 and the anode of controlled constant-current source connect, and the drain electrode of metal-oxide-semiconductor Q1 passes through the negative of bypass resistance R1 connection controlled constant-current sources
Pole using the above scheme, changes voltage to control the characteristic of electric current, and the driving force of metal-oxide-semiconductor Q1 is put than operation using metal-oxide-semiconductor
Big device IC1 is big, and making can be with bigger from the electric current that metal-oxide-semiconductor Q1 flows out.
Further, the feedback unit includes first resistor R3, second resistance R4, one end of the second resistance R4
Connect the output terminal of operational amplifier IC2, the other end of second resistance R4 respectively with one end of first resistor R3, operational amplifier
The inverting input connection of IC1, the other end of the first resistor R3 are connect with the grid of metal-oxide-semiconductor Q1, using the above scheme, institute
In the current feedback to the operational amplifier IC1 for stating first resistor R3 outputs, the current feedback of the second resistance R4 outputs
On to the operational amplifier IC1.
To achieve the above object, another technical solution of the utility model use is：A kind of bypass constant-current source electricity in parallel
Road, includes controlled constant-current source and load RL, and the controlled constant-current source is connected forming circuit with loading RL, which is characterized in that
A controllable load has been further included, the controllable load is connected in parallel on load RL, wherein, the controllable load includes sampling resistor
R2, operational amplifier IC1, feedback unit, bypass resistance R1, reference power supply and the operational amplifier IC2 for current detecting,
The anode of one end connection controlled constant-current source of the sampling resistor R2, the other end is by loading the negative of RL connection controlled constant-current sources
Pole, and the other end of sampling resistor R2 is also connected by the cathode of bypass resistance R1 and controlled constant-current source, the operational amplifier
Both ends of the both ends of IC2 respectively with sampling resistor R2 are connect, and the output terminal of operational amplifier IC2 connects operation by feedback unit
The inverting input of amplifier IC1, noninverting input connection reference power supply, the output terminal of operational amplifier IC1 respectively with feedback
One end connection of the input terminal, bypass resistance R1 of unit.
Further, metal-oxide-semiconductor Q1, the grid of the output terminal connection metal-oxide-semiconductor Q1 of operational amplifier IC1, metal-oxide-semiconductor have been further included
The other end of the source electrode connection sampling resistor R2 of Q1, the drain electrode of metal-oxide-semiconductor Q1 respectively with the input terminal of feedback unit, bypass resistance R1
One end connection, change voltage using metal-oxide-semiconductor and control the characteristic of electric current, and the driving force of metal-oxide-semiconductor Q1 compares operational amplifier
IC1 is big, and making can be with bigger from the electric current that metal-oxide-semiconductor Q1 flows out.
Further, the feedback unit includes first resistor R3, second resistance R4, one end of the first resistor R3
One end of bypass resistance R1, one end of other end connection second resistance R4 are connected, the other end connection operation of second resistance R4 is put
The output terminal of big device IC2, using the above scheme, the current feedback that the first resistor R3 is exported to the operational amplifier IC1
On, in the current feedback to the operational amplifier IC1 of the second resistance R4 outputs.
The beneficial effects of the utility model are：The utility model includes a controllable load, and the controllable load is in parallel
In load and the controllable load includes operational amplifier IC1 and feedback unit, by using operational amplifier IC1 and instead
It presents unit to cooperate the structure to be cooperated by metal-oxide-semiconductor and diode instead of tradition, the electric current in bypass passes through feedback
Member is flow on operational amplifier IC1, and operational amplifier IC1 is corresponding with main line electric according to the size of current of feedback output one
Stream to achieve the effect that total output current is constant, has the characteristic of outputting current steadily, solves traditional controlled constant-current source and occurs
The problem of performance is undesirable, easily unstable.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model specific embodiment one.
Fig. 2 is the circuit diagram of the utility model specific embodiment two.
Fig. 3 is the circuit diagram of the utility model specific embodiment three.
Fig. 4 is the circuit diagram of the utility model specific embodiment four.
Fig. 5 is the circuit diagram of the utility model specific embodiment five.
Fig. 6 is existing controlled constant-current source circuit diagram.
Specific embodiment
Embodiment one：Refering to Figure 1, a kind of bypass constant-current source circuit in parallel, includes controlled constant-current source and bears
RL is carried, has further included a controllable load, the controllable load is connected in parallel on load RL, wherein, the controllable load includes fortune
Calculate amplifier IC1, reference power supply, bypass resistance R1, feedback unit, one end of bypass resistance R1, load one end of RL with by
The anode connection of constant-current source is controlled, the other end of bypass resistance R1 and the cathode of controlled constant-current source connect, and the other end for loading RL leads to
The cathode of over-sampling resistance R2 and controlled constant-current source connects, and the one end for loading RL connects operational amplifier IC1 by feedback unit
Inverting input, the output terminal of operational amplifier IC1 connects respectively with the input terminal of one end of bypass resistance R1, feedback unit
It connects, wherein, the positive input connection reference power supply of operational amplifier IC1.
Further, the feedback unit includes first resistor R3, second resistance R4, one end of first resistor R3 and fortune
The inverting input connection of amplifier IC1 is calculated, the other end is connect with the output terminal of operational amplifier IC1, the second resistance R4
One end with load RL one end connect, the other end is connect with the inverting input of operational amplifier IC1, using the above scheme,
In the current feedback to the operational amplifier IC1 of the first resistor R3 outputs, the electric current of the second resistance R4 outputs is anti-
It is fed on the operational amplifier IC1.
Embodiment two is please referred to shown in Fig. 2, further, has further included metal-oxide-semiconductor Q1, the source electrode of the metal-oxide-semiconductor Q1 with by
The anode connection of constant-current source is controlled, the grid of metal-oxide-semiconductor Q1 is connect with the output terminal of operational amplifier IC1, drain electrode and the side of metal-oxide-semiconductor Q1
One end connection of road resistance R1 using the above scheme, changes voltage to control the characteristic of electric current using metal-oxide-semiconductor, and metal-oxide-semiconductor Q1
Driving force is bigger than operational amplifier IC1, and making can be with bigger from the electric current that metal-oxide-semiconductor Q1 flows out.
The use principle of the utility model is as follows：Electric current I0 is the total current in circuit, and electric current IO is the electric current for loading RL
In addition flow through the electric current of other resistance R1, sampling resistor R2 is for the voltage on detection stream overload RL and to pass through second resistance R4 anti-
It is fed in operational amplifier IC1, so as to adjust the output voltage of operational amplifier IC1, when the electric current liter at load resistance RL both ends
The voltage increase at Gao Shi, sampling resistor R2 both ends, the voltage are fed back to by second resistance R4 in operational amplifier IC1, operation
Amplifier IC1 exports low-voltage, and the electric current of metal-oxide-semiconductor Q1 grids is reduced, and total current I0 is remained unchanged；When the electric current at load RL both ends
Become smaller, the both end voltage of sampling resistor R2 becomes smaller, and operational amplifier IC1 output voltages raising, the electric current of metal-oxide-semiconductor Q1 grids becomes
Greatly, total current IO is constant.
Embodiment three：It please refers to shown in Fig. 3, a kind of bypass constant-current source circuit in parallel includes controlled constant-current source and bears
RL is carried, has further included a controllable load, the controllable load is connected in parallel on load RL, wherein, the controllable load includes fortune
Amplifier IC1, reference power supply, bypass resistance R1, feedback unit and the operational amplifier IC2 for detecting electric current are calculated, it is described
The anode of one end connection controlled constant-current source of bypass resistance R1, the other end connect the cathode of controlled constant-current source, sampling resistor R2's
One end connects the anode of controlled constant-current source, the other end by loading the cathode of RL connection controlled constant-current sources, operational amplifier IC2's
The both ends of in-phase input end, inverting input respectively with sampling resistor R2 are connect, and the output terminal of operational amplifier IC2 passes through feedback
Unit is connect with the inverting input of operational amplifier IC1, and the one of the output terminal connection bypass resistance R1 of operational amplifier IC1
End, the in-phase input end connection reference power supply of operational amplifier IC1.
Further, metal-oxide-semiconductor Q1, the grid of the output terminal connection metal-oxide-semiconductor Q1 of operational amplifier IC1, metal-oxide-semiconductor have been further included
The source electrode of Q1 and the anode of controlled constant-current source connect, and the drain electrode of metal-oxide-semiconductor Q1 passes through the negative of bypass resistance R1 connection controlled constant-current sources
Pole using the above scheme, changes voltage to control the characteristic of electric current, and the driving force of metal-oxide-semiconductor Q1 is put than operation using metal-oxide-semiconductor
Big device IC1 is big, and making can be with bigger from the electric current that metal-oxide-semiconductor Q1 flows out.
Further, the feedback unit includes first resistor R3, second resistance R4, one end of the second resistance R4
Connect the output terminal of operational amplifier IC2, the other end of second resistance R4 respectively with one end of first resistor R3, operational amplifier
The inverting input connection of IC1, the other end of the first resistor R3 are connect with the grid of metal-oxide-semiconductor Q1, using the above scheme, institute
In the current feedback to the operational amplifier IC1 for stating first resistor R3 outputs, the current feedback of the second resistance R4 outputs
On to the operational amplifier IC1.
The use principle of the utility model is as follows：Current signal is detected simultaneously by dedicated operational amplifier IC2
Voltage signal output is converted to, when electric current becomes larger by loading RL, current monitoring output voltage increases, operational amplifier IC2
Output voltage lower, become smaller by the electric current of metal-oxide-semiconductor Q1 grids, total current I0 is remained unchanged.Otherwise by loading RL electric currents
Become smaller, sampling resistor R2 voltages reduce, and current monitoring output voltage is lower, and operational amplifier IC2 outputs increase, and pass through metal-oxide-semiconductor
The electric current of Q1 becomes larger, and total current is constant.
Example IV：As shown in fig.4, a kind of bypass constant-current source circuit in parallel, includes controlled constant-current source and load
RL has further included a controllable load, and the controllable load is connected in parallel on load RL, wherein, the controllable load includes sampling
Resistance R2, operational amplifier IC1, feedback unit, bypass resistance R1, reference power supply and the operational amplifier for current detecting
The anode of one end connection controlled constant-current source of IC2, the sampling resistor R2, the other end is by loading RL connection controlled constant-current sources
Cathode, and the other end of sampling resistor R2 is also connected by the cathode of bypass resistance R1 and controlled constant-current source, the operation amplifier
Both ends of the both ends of device IC2 respectively with sampling resistor R2 are connect, and the output terminal of operational amplifier IC2 is connected by feedback unit to be transported
Calculate the inverting input of amplifier IC1, noninverting input connection reference power supply, operational amplifier IC1 output terminals respectively with feedback
One end connection of the input terminal, bypass resistance R1 of unit.
Further, metal-oxide-semiconductor Q1, the grid of the output terminal connection metal-oxide-semiconductor Q1 of operational amplifier IC1, metal-oxide-semiconductor have been further included
The other end of the source electrode connection sampling resistor R2 of Q1, the drain electrode of metal-oxide-semiconductor Q1 respectively with the input terminal of feedback unit, bypass resistance R1
One end connection, change voltage using metal-oxide-semiconductor and control the characteristic of electric current, and the driving force of metal-oxide-semiconductor Q1 compares operational amplifier
IC1 is big, and making can be with bigger from the electric current that metal-oxide-semiconductor Q1 flows out.
Further, the feedback unit includes first resistor R3, second resistance R4, one end of the first resistor R3
One end of bypass resistance R1, one end of other end connection second resistance R4 are connected, the other end connection operation of second resistance R4 is put
The output terminal of big device IC2, using the above scheme, the current feedback that the first resistor R3 is exported to the operational amplifier IC1
On, in the current feedback to the operational amplifier IC1 of the second resistance R4 outputs.
Compared with prior art, the utility model includes a controllable load, the controllable load be connected in parallel on load it is upper and
The controllable load includes operational amplifier IC1 and feedback unit, mutual by using operational amplifier IC1 and feedback unit
Coordinate the structure to be cooperated instead of tradition by metal-oxide-semiconductor and diode, the electric current in bypass flow to fortune by feedback unit
It calculates on amplifier IC1, operational amplifier IC1 exports an electric current corresponding with main line according to the size of current of feedback, to reach
Total constant effect of output current has the characteristic of outputting current steadily, solves traditional controlled constant-current source and performance occurs and pays no attention to
The problem of thinking, be easily unstable.
The use principle of the utility model is as follows：Using sampling resistor R2 and operational amplifier IC2 to total current IO into
Row detecting/monitoring, when IO total currents become larger the pressure drop of sampling resistor R2 become larger, the voltage raising of operational amplifier IC2 outputs is led to
The defeated inverting inputs to operational amplifier IC1 of second resistance R4 are crossed, the output voltage of operational amplifier IC1 lowers, and passes through MOS
The electric current of pipe Q1 becomes smaller.Conversely, when total current IO becomes smaller, sampling resistor R2 pressure drops become smaller, and current monitoring output voltage reduces, fortune
The output current increase of amplifier IC1 is calculated, final total current I0 is remained unchanged.
Embodiment five：As shown in fig.5, in the specific implementation five of the utility model, one end connection of sampling resistor R2 is other
One end of road resistance R1, the other end connect the cathode of controlled constant-current source, the noninverting input connection sampling electricity of operational amplifier IC2
One end of R2 is hindered, the other end connects the cathode of controlled constant-current source, remaining element connection mode, structure and principle are and embodiment
Three is consistent.
Embodiment of above is only that the preferred embodiment of the utility model is described, not to the utility model
Range be defined, under the premise of the spirit of the design of the utility model is not departed from, this field ordinary skill technical staff to this
The various modifications and improvement that the technical solution of utility model is made should all fall into the guarantor that claims of the utility model determine
In the range of shield.
Claims (9)
1. a kind of bypass constant-current source circuit in parallel, includes controlled constant-current source and load (RL), which is characterized in that further included
One controllable load, the controllable load are connected in parallel in load (RL), wherein, the controlled constant-current source includes operational amplifier
(IC1), reference power supply, bypass resistance (R1), feedback unit, one end of bypass resistance (R1), load (RL) one end with by
The anode connection of constant-current source is controlled, the other end of bypass resistance (R1) and the cathode of controlled constant-current source connect, and load the another of (RL)
End is connect by sampling resistor (R2) with the cathode of controlled constant-current source, and the one end for loading (RL) is put by feedback unit connection operation
The inverting input of big device (IC1), the output terminal of operational amplifier (IC1) respectively with one end of bypass resistance (R1), feedback
The input terminal connection of member, wherein, the positive input connection reference power supply of operational amplifier (IC1).
2. a kind of bypass constant-current source circuit in parallel according to claim 1, which is characterized in that the feedback unit includes
First resistor (R3), second resistance (R4), one end of first resistor (R3) connect with the inverting input of operational amplifier (IC1)
It connects, the other end is connect with the output terminal of operational amplifier (IC1), one end of the second resistance (R4) and one end of load (RL)
Connection, the other end are connect with the inverting input of operational amplifier (IC1).
3. a kind of bypass constant-current source circuit in parallel according to claim 1, which is characterized in that metal-oxide-semiconductor (Q1) has been further included,
The source electrode of the metal-oxide-semiconductor (Q1) and the anode of controlled constant-current source connect, grid and the operational amplifier (IC1) of metal-oxide-semiconductor (Q1)
Output terminal connects, and the drain electrode of metal-oxide-semiconductor (Q1) is connect with one end of bypass resistance (R1).
4. a kind of bypass constant-current source circuit in parallel, includes controlled constant-current source and load (RL), which is characterized in that further included
One controllable load, the controllable load are connected in parallel in load (RL), wherein, the controllable load includes operational amplifier
(IC1), reference power supply, bypass resistance (R1), feedback unit and for detecting the operational amplifier of electric current (IC2), the side
The anode of one end connection controlled constant-current source of road resistance (R1), the other end connect the cathode of controlled constant-current source, sampling resistor (R2)
One end connection controlled constant-current source anode, the other end pass through load (RL) connect controlled constant-current source cathode, operational amplifier
(IC2) the both ends of in-phase input end, inverting input respectively with sampling resistor (R2) are connect, operational amplifier (IC2) output
End is connect by feedback unit with the inverting input of operational amplifier (IC1), and the output terminal connection of operational amplifier (IC1) is other
One end of road resistance (R1), the in-phase input end connection reference power supply of operational amplifier (IC1).
5. a kind of bypass constant-current source circuit in parallel according to claim 4, which is characterized in that metal-oxide-semiconductor (Q1) has been further included,
The grid of the output terminal connection metal-oxide-semiconductor (Q1) of operational amplifier (IC1), the source electrode of metal-oxide-semiconductor (Q1) and the anode of controlled constant-current source
Connection, the drain electrode of metal-oxide-semiconductor (Q1) connect the cathode of controlled constant-current source by bypass resistance (R1).
6. a kind of bypass constant-current source circuit in parallel according to claim 4, which is characterized in that the feedback unit includes
First resistor (R3), second resistance (R4), the output terminal of one end connection operational amplifier (IC2) of the second resistance (R4),
Inverting input of the other end of second resistance (R4) respectively with one end of first resistor (R3), operational amplifier (IC1) is connect,
The other end of the first resistor (R3) is connect with the grid of metal-oxide-semiconductor (Q1).
7. a kind of bypass constant-current source circuit in parallel, includes controlled constant-current source and load (RL), which is characterized in that further included
One controllable load, the controllable load are connected in parallel in load (RL), wherein, the controllable load include sampling resistor (R2),
Operational amplifier (IC1), feedback unit, bypass resistance (R1), reference power supply and the operational amplifier for current detecting
(IC2), the anode of one end connection controlled constant-current source of the sampling resistor (R2), the other end connect controlled perseverance by loading (RL)
The cathode in stream source, and the other end of sampling resistor (R2) is also connect by bypass resistance (R1) with the cathode of controlled constant-current source, institute
It states both ends of the both ends of operational amplifier (IC2) respectively with sampling resistor (R2) to connect, the output terminal of operational amplifier (IC2) leads to
Cross the inverting input of feedback unit connection operational amplifier (IC1), noninverting input connection reference power supply, operational amplifier
(IC1) one end of output terminal respectively with the input terminal of feedback unit, bypass resistance (R1) is connect.
8. a kind of bypass constant-current source circuit in parallel according to claim 7, which is characterized in that metal-oxide-semiconductor (Q1) has been further included,
The grid of the output terminal connection metal-oxide-semiconductor (Q1) of operational amplifier (IC1), the source electrode connection sampling resistor (R2) of metal-oxide-semiconductor (Q1)
The other end, one end to drain respectively with the input terminal of feedback unit, bypass resistance (R1) of metal-oxide-semiconductor (Q1) are connect.
9. a kind of bypass constant-current source circuit in parallel according to claim 7, which is characterized in that the feedback unit includes
First resistor (R3), second resistance (R4), one end of one end connection bypass resistance (R1) of the first resistor (R3), the other end
Connect one end of second resistance (R4), the output terminal of the other end connection operational amplifier (IC2) of second resistance (R4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721494642.7U CN207503083U (en) | 2017-11-10 | 2017-11-10 | A kind of bypass constant-current source circuit in parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721494642.7U CN207503083U (en) | 2017-11-10 | 2017-11-10 | A kind of bypass constant-current source circuit in parallel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207503083U true CN207503083U (en) | 2018-06-15 |
Family
ID=62504445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721494642.7U Active CN207503083U (en) | 2017-11-10 | 2017-11-10 | A kind of bypass constant-current source circuit in parallel |
Country Status (1)
| Country | Link |
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| CN (1) | CN207503083U (en) |
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2017
- 2017-11-10 CN CN201721494642.7U patent/CN207503083U/en active Active
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