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Quickly switchable constant-current source for cold atom interferometric gravimeter

A fast switching, interference type technology, applied in the field of constant current source, can solve the problems of small current value, poor stability and high cost of use, and achieve the effect of short switching response delay, simple circuit structure and stable current value

Active Publication Date: 2017-06-13
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing constant current source has high production cost, small current value, poor stability, and cannot perform timing control through TTL signals
High-precision and high-current constant current sources are expensive and costly to use

Method used

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  • Quickly switchable constant-current source for cold atom interferometric gravimeter
  • Quickly switchable constant-current source for cold atom interferometric gravimeter

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Embodiment Construction

[0016] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] see figure 1 and figure 2 , the present invention is used for the cold atom interference type gravimeter and can quickly switch the constant current source, including TTL control signal input circuit unit 1, photoelectric coupling circuit unit 2, MOSFET switch circuit unit 3, power signal noise reduction circuit unit 4, Constant current circuit unit 5 and output load circuit unit 6 .

[0018] In the TTL control signal input circuit unit 1, the TTL signal of the signal generator is connected to the signal input terminal through the BNC interface, the high-level output terminal is connected to the No. 2 pin of the input terminal, and the low-level output terminal is connected to the input terminal Connect to pin 1 of the input terminal, and connect pin 1 of the input terminal to ground. The first terminal pin of the current limiting r...

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PUM

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Abstract

The invention discloses a quickly switchable constant-current source for a cold atom interferometric gravimeter. The quickly switchable constant-current source comprises a TTL (transistor-transistor logic) control signal input circuit unit 1, a photoelectric coupling circuit unit 2, an MOSFET (metal oxide semiconductor field effect transistor) switch circuit unit 3, a power signal noise reduction circuit unit 4, a constant-current circuit unit 5 and an output load circuit unit 6. The quickly switchable constant-current source has the advantages of simple circuit structures, stable current values, short switch response delay, low power consumption and the like. Besides, the current source turn-on and turn-off time of the quickly switchable constant-current source can be at the microsecond level under the control, and deviation of the current values of the quickly switchable constant-current source is within the range of one ten-thousandth under the control.

Description

technical field [0001] The invention relates to the technical field of linear power supply, in particular to the constant current source in the cold atom interference type gravimeter. [0002] technical background [0003] The constant current source applied to the cold atom interferometric gravimeter generally requires a stable current value of the power supply, fast response speed and small ripple. The existing constant current source has high production cost, small current value and poor stability, and cannot perform timing control through TTL signals. High precision and high current constant current sources are expensive and costly to use. Contents of the invention [0004] The present invention overcomes the existing above-mentioned shortcomings, and provides a constant current source with simple circuit structure, reliable working performance, and capable of realizing TTL signal timing control, which is used in a cold atom interference type gravimeter. [0005] The ...

Claims

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Application Information

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IPC IPC(8): G05F1/575
CPCG05F1/575
Inventor 翁堪兴吴彬程冰周寅林强
Owner ZHEJIANG UNIV OF TECH
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