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The Design on Power Supply of ACFM Test System Based on AD9959 Chip
Current Issue
Volume 4, 2017
Issue 1 (January)
Pages: 1-5   |   Vol. 4, No. 1, January 2017   |   Follow on         
Paper in PDF Downloads: 76   Since Aug. 17, 2017 Views: 1458   Since Aug. 17, 2017
Authors
[1]
Ren Shangkun, Key Laboratory of Nondestructive Testing of Ministry of Education, Nanchang Hangkong University, Nanchang, China.
[2]
Hu Jiang, Key Laboratory of Nondestructive Testing of Ministry of Education, Nanchang Hangkong University, Nanchang, China.
[3]
Zhou Liuci, Key Laboratory of Nondestructive Testing of Ministry of Education, Nanchang Hangkong University, Nanchang, China.
Abstract
The sine wave signal excitation source of meeting the requirements of ACFM was designed. This circuit are composed of direct digital synthesizer, low-pass filters, programmable amplifier and power amplifier. The design idea overcame the shortage that frequency and voltage were uncontrollable in the ACFM traditional detection systems before. It proved that the circuit can realize the objective as follows: the excitation’s frequency and voltage are stable and controllable; The output current is strong enough; The signal to noise ratio is high enough. This design are completely satisfied to the ACFM system’ requirement
Keywords
Nondestructive, ACFM, Test Systrm, AD9959, Driving Source
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