CN206479871U - Can high-speed switch constant-current source for cold atom interference-type gravimeter - Google Patents
Can high-speed switch constant-current source for cold atom interference-type gravimeter Download PDFInfo
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- CN206479871U CN206479871U CN201720074026.XU CN201720074026U CN206479871U CN 206479871 U CN206479871 U CN 206479871U CN 201720074026 U CN201720074026 U CN 201720074026U CN 206479871 U CN206479871 U CN 206479871U
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Abstract
Can high-speed switch constant-current source, including TTL control signals input circuit unit 1, photoelectric coupling circuit unit 2, switch mosfet circuit unit 3, power supply signal Dolby circuit unit 4, constant-current circuit unit 5 and the output loading circuit unit 6 being sequentially connected for cold atom interference-type gravimeter；The utility model has the advantages that simple circuit structure, electric current value stabilization, the short and small power consumption of switch response delay；The current source of constant-current source is switched on and off the time and can be controlled in microsecond rank, within the current value deviation control a ten thousandth of constant-current source.
Description
Technical field
The utility model is related to linear power supply technical field, especially for the constant current in cold atom interference-type gravimeter
Source.
Background technology
Applied to the constant-current source of cold atom interference-type gravimeter, electric current value stabilization, the fast response time of power supply are typically required
It is small with ripple.Existing constant-current source cost of manufacture is high, current value is less than normal, less stable, it is impossible to carry out sequential by TTL signal
Control.The constant-current source of high-accuracy heavy-current is expensive, and use cost is high.
The content of the invention
The utility model will overcome existing disadvantages mentioned above simple there is provided a kind of circuit structure, and reliable working performance can be real
The constant-current source of existing TTL signal SECO, in cold atom interference-type gravimeter.
The utility model is realized by following technical scheme.
High-speed switch constant-current source of the present utility model for cold atom interference-type gravimeter, including the TTL being sequentially connected
Control signal input circuit unit 1, photoelectric coupling circuit unit 2, switch mosfet circuit unit 3, power supply signal Dolby circuit
Unit 4, constant-current circuit unit 5 and output loading circuit unit 6.
In the TTL control signals input circuit unit 1, the TTL signal of signal generator is accessed by bnc interface and believed
Number input, No. 2 pins in high level output end and input terminal are connected, No. 1 pin in low level output end and input terminal
It is connected, No. 1 pin of input terminal is connected with ground.Current-limiting resistance R1 first end pin and No. 2 of TTL signal input are drawn
Pin is connected, and current-limiting resistance R1 the second end is connected.
It is made up of in described photoelectric coupling circuit unit 2 photoelectrical coupler U1 and shunt capacitance C1, wherein：Photoelectricity coupling
Clutch U1 No. 2 pins are connected with current-limiting resistance R1 the second end, and photoelectrical coupler U1 No. 3 pins are connected with ground, photoelectricity coupling
No. 5 pins of clutch are connected with ground, and No. 8 pins of photoelectrical coupler are connected with power supply signal.Shunt capacitance C1 first end and
No. 8 pins of photoelectrical coupler are connected, and the second end pin of shunt capacitance is connected with ground.
By current-limiting resistance R2, shunt capacitance C4 and MOSFET triode Q1 structures in described switch mosfet circuit unit 3
Into, wherein：Current-limiting resistance R2 first end is connected with photoelectrical coupler No. 8 pins, current-limiting resistance R2 the second end pin and
No. 6 pins of photoelectrical coupler are connected.Shunt capacitance C4 first end pin is connected with current-limiting resistance R2 the second end pin.It is other
Road electric capacity C4 the second end pin is connected with ground.MOSFET triodes Q1 No. 1 pin and shunt capacitance C4 first end pin
It is connected, MOSFET triodes Q1 No. 2 pins are connected with No. 2 pins of output loading terminals.The 3 of MOSFET triodes Q1
Number pin is connected with ground.
It is made up of in described power supply signal Dolby circuit unit 4 small electrochemical capacitor C4 and big electrochemical capacitor C5, wherein：It is small
Electrochemical capacitor C4 first end pin is connected with power supply signal, and small electrochemical capacitor C4 the second end pin is connected with ground；Big electrolysis
Electric capacity C5 first end pin is connected with power supply signal, and big electrochemical capacitor C5 the second end pin is connected with ground.
By electric capacity C2, electric capacity C3, diode D1, voltage stabilizing chip U2 and sampling resistor R3 in described constant-current circuit unit 5
Constitute, wherein：Electric capacity C2 first end pin is connected with voltage stabilizing chip U2 No. 1 pin, electric capacity C2 the second end pin and steady
Chip U2 No. 2 pins are pressed to be connected；Electric capacity C3 first end pin is connected with voltage stabilizing chip U2 No. 3 pins, and the of electric capacity C3
Two ends are connected with diode D1 positive pole；Diode D1 negative pole is connected with voltage stabilizing chip U2 No. 2 pins；Sampling resistor R3's
First end pin is connected with voltage stabilizing chip U2 No. 3 pins, sampling resistor R3 the second end pin and diode D1 positive pole phase
Even.
Described No. 1 pin of output loading terminals is electric current delivery outlet, and No. 2 pins are electric current input port.
The utility model has the advantages that：The utility model has simple circuit structure, electric current value stabilization, switch response delay
The advantages of short and small power consumption；The current source of constant-current source is switched on and off the time and can be controlled in microsecond rank, the electric current of constant-current source
It is worth within deviation control a ten thousandth.
Brief description of the drawings
Fig. 1 is construction unit block diagram of the present utility model；
Fig. 2 is design principle figure of the present utility model.
Embodiment
The technical solution of the utility model is further illustrated below in conjunction with the accompanying drawings.
Referring to Fig. 1 and Fig. 2, the utility model be used for cold atom interference-type gravimeter can high-speed switch constant-current source, including according to
The TTL control signals input circuit unit 1 of secondary connection, photoelectric coupling circuit unit 2, switch mosfet circuit unit 3, power supply letter
Number Dolby circuit unit 4, constant-current circuit unit 5 and output loading circuit unit 6.
In the TTL control signals input circuit unit 1, the TTL signal of signal generator is accessed by bnc interface and believed
Number input, No. 2 pins in high level output end and input terminal are connected, No. 1 pin in low level output end and input terminal
It is connected, No. 1 pin of input terminal is connected with ground.Current-limiting resistance R1 first end pin and No. 2 of TTL signal input are drawn
Pin is connected, and current-limiting resistance R1 the second end is connected.
It is made up of in described photoelectric coupling circuit unit 2 photoelectrical coupler U1 and shunt capacitance C1, wherein：Photoelectricity coupling
Clutch U1 No. 2 pins are connected with current-limiting resistance R1 the second end, and photoelectrical coupler U1 No. 3 pins are connected with ground, photoelectricity coupling
No. 5 pins of clutch are connected with ground, and No. 8 pins of photoelectrical coupler are connected with power supply signal.Shunt capacitance C1 first end and
No. 8 pins of photoelectrical coupler are connected, and the second end pin of shunt capacitance is connected with ground.
By current-limiting resistance R2, shunt capacitance C4 and MOSFET triode Q1 structures in described switch mosfet circuit unit 3
Into, wherein：Current-limiting resistance R2 first end is connected with photoelectrical coupler No. 8 pins, current-limiting resistance R2 the second end pin and
No. 6 pins of photoelectrical coupler are connected.Shunt capacitance C4 first end pin is connected with current-limiting resistance R2 the second end pin.It is other
Road electric capacity C4 the second end pin is connected with ground.MOSFET triodes Q1 No. 1 pin and shunt capacitance C4 first end pin
It is connected, MOSFET triodes Q1 No. 2 pins are connected with No. 2 pins of output loading terminals.The 3 of MOSFET triodes Q1
Number pin is connected with ground.
It is made up of in described power supply signal Dolby circuit unit 4 small electrochemical capacitor C4 and big electrochemical capacitor C5, wherein：It is small
Electrochemical capacitor C4 first end pin is connected with power supply signal, and small electrochemical capacitor C4 the second end pin is connected with ground；Big electrolysis
Electric capacity C5 first end pin is connected with power supply signal, and big electrochemical capacitor C5 the second end pin is connected with ground.
By electric capacity C2, electric capacity C3, diode D1, voltage stabilizing chip U2 and sampling resistor R3 in described constant-current circuit unit 5
Constitute, wherein：Electric capacity C2 first end pin is connected with voltage stabilizing chip U2 No. 1 pin, electric capacity C2 the second end pin and steady
Chip U2 No. 2 pins are pressed to be connected；Electric capacity C3 first end pin is connected with voltage stabilizing chip U2 No. 3 pins, and the of electric capacity C3
Two ends are connected with diode D1 positive pole；Diode D1 negative pole is connected with voltage stabilizing chip U2 No. 2 pins；Sampling resistor R3's
First end pin is connected with voltage stabilizing chip U2 No. 3 pins, sampling resistor R3 the second end pin and diode D1 positive pole phase
Even.
No. 1 pin is electric current delivery outlet in described output loading circuit unit 6, and No. 2 pins are electric current input port.
TTL control signals input circuit unit 1 is to realize that TTL control signals are accessed, and common interfaces are BNC；
Photoelectric coupling circuit unit 2 is that TTL control signals are converted into photo-electric control signal, mainly passes through photoelectric coupling
Device is realized；
Switch mosfet circuit unit 3 is the function of realizing a high-speed switch, mainly by MOSFET triodes come
Realize；
Power supply signal Dolby circuit unit 4 is the function of realizing power supply signal noise reduction, can reduce the property to power supply signal
It can require, mainly be electrolysed parallel connection to realize by size；
Constant-current circuit unit 5 is realized by voltage stabilizing chip U2 and sampling resistor and corresponding supporting auxiliary circuit；
Output loading circuit unit 6 is to realize load and the connection of constant-current source.
Content described in this specification embodiment is only enumerating to the way of realization of utility model design, and this practicality is new
The protection domain of type should not be construed as limited to only the concrete form that embodiment is stated, protection domain of the present utility model also and
In those skilled in the art according to the thinkable equivalent technologies mean of the utility model design institute.
Claims (1)
1. for cold atom interference-type gravimeter can high-speed switch constant-current source, including be sequentially connected TTL control signals input electricity
Road unit (1), photoelectric coupling circuit unit (2), switch mosfet circuit unit (3), power supply signal Dolby circuit unit (4),
Constant-current circuit unit (5) and output loading circuit unit (6)；
In the TTL control signals input circuit unit (1), the TTL signal of signal generator is accessed by signal by bnc interface
Input, No. 2 pins in high level output end and input terminal are connected, No. 1 pin phase in low level output end and input terminal
Even, No. 1 pin of input terminal is connected with ground；Current-limiting resistance R1 first end pin and No. 2 pin phases of TTL signal input
Even, current-limiting resistance R1 the second end is connected；
It is made up of in described photoelectric coupling circuit unit (2) photoelectrical coupler U1 and shunt capacitance C1, wherein：Photoelectrical coupler
U1 No. 2 pins are connected with current-limiting resistance R1 the second end, and photoelectrical coupler U1 No. 3 pins are connected with ground, photoelectrical coupler
No. 5 pins with ground be connected, No. 8 pins of photoelectrical coupler are connected with power supply signal；Shunt capacitance C1 first end and photoelectricity
No. 8 pins of coupler are connected, and the second end pin of shunt capacitance is connected with ground；
It is made up of in described switch mosfet circuit unit 3 current-limiting resistance R2, shunt capacitance C4 and MOSFET triode Q1, its
In：Current-limiting resistance R2 first end is connected with photoelectrical coupler No. 8 pins, current-limiting resistance R2 the second end pin and photoelectricity coupling
No. 6 pins of clutch are connected；Shunt capacitance C4 first end pin is connected with current-limiting resistance R2 the second end pin；Shunt capacitance
C4 the second end pin is connected with ground；MOSFET triodes Q1 No. 1 pin is connected with shunt capacitance C4 first end pin,
MOSFET triodes Q1 No. 2 pins are connected with No. 2 pins of output loading terminals；MOSFET triodes Q1 No. 3 pins
It is connected with ground；
It is made up of in described power supply signal Dolby circuit unit (4) small electrochemical capacitor C4 and big electrochemical capacitor C5, wherein：Small electricity
Solution electric capacity C4 first end pin is connected with power supply signal, and small electrochemical capacitor C4 the second end pin is connected with ground；Big electrolysis electricity
The first end pin for holding C5 is connected with power supply signal, and big electrochemical capacitor C5 the second end pin is connected with ground；
By electric capacity C2, electric capacity C3, diode D1, voltage stabilizing chip U2 and sampling resistor R3 structures in described constant-current circuit unit (5)
Into, wherein：Electric capacity C2 first end pin is connected with voltage stabilizing chip U2 No. 1 pin, electric capacity C2 the second end pin and voltage stabilizing
Chip U2 No. 2 pins are connected；Electric capacity C3 first end pin is connected with voltage stabilizing chip U2 No. 3 pins, and the second of electric capacity C3
End is connected with diode D1 positive pole；Diode D1 negative pole is connected with voltage stabilizing chip U2 No. 2 pins；The of sampling resistor R3
One end pin is connected with voltage stabilizing chip U2 No. 3 pins, and sampling resistor R3 the second end pin is connected with diode D1 positive pole；
Described No. 1 pin of output loading terminals is electric current delivery outlet, and No. 2 pins are electric current input port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720074026.XU CN206479871U (en) | 2017-01-19 | 2017-01-19 | Can high-speed switch constant-current source for cold atom interference-type gravimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720074026.XU CN206479871U (en) | 2017-01-19 | 2017-01-19 | Can high-speed switch constant-current source for cold atom interference-type gravimeter |
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| Publication Number | Publication Date |
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| CN206479871U true CN206479871U (en) | 2017-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720074026.XU Withdrawn - After Issue CN206479871U (en) | 2017-01-19 | 2017-01-19 | Can high-speed switch constant-current source for cold atom interference-type gravimeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106843362A (en) * | 2017-01-19 | 2017-06-13 | 浙江工业大学 | Can high-speed switch constant-current source for cold atom interference-type gravimeter |
-
2017
- 2017-01-19 CN CN201720074026.XU patent/CN206479871U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106843362A (en) * | 2017-01-19 | 2017-06-13 | 浙江工业大学 | Can high-speed switch constant-current source for cold atom interference-type gravimeter |
| CN106843362B (en) * | 2017-01-19 | 2018-01-12 | 浙江工业大学 | Can high-speed switch constant-current source for cold atom interference-type gravimeter |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170908 Effective date of abandoning: 20180112 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170908 Effective date of abandoning: 20180112 |