A Pulse Current Source Based on Combination Method
A technology of pulse current and combination method, which is applied in the direction of electric pulse generator circuit, energy storage element to generate pulse, etc., can solve the problem of large power consumption of field effect tubes, shorten the rise time of pulse current, improve quality, and reduce power consumption Effect
Active Publication Date: 2019-05-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0003] The rise time of the pulse current signal is an important parameter to measure the quality of the pulse current waveform, and it is an important parameter that affects the output performance of the system where the pulse current source is located; at the same time, for large currents, the power consumption of the field effect tube is large, how to shorten the rise time of the pulse current And reducing the power consumption of field effect tubes is an important topic of current research
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[0031] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.
[0032] figure 1 It is a principle block diagram of a specific embodiment of the pulse current source based on the combination method of the present invention.
[0033] In this embodiment, the present invention outputs a pulse current with an adjustable amplitude of 0-9.99A and an adjustable pulse width of 0-99.99ms through a combination method. The so-called combination method output is to realize the output scheme of large-value adjustable pulse current output by combining multiple fixed-amplitude output constant-current source modules and one amplitude-adjustable constan...
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The invention discloses a pulse current source based on a combination method. An amplitude-adjustable constant current module is used to output a low-level pulse current with adjustable amplitude according to the setting of the low-level pulse current amplitude, and a plurality of fixed-amplitude output constant current modules are used. The current module outputs 0 to multiple pulse currents with fixed amplitude according to the high bit of the output pulse current amplitude, and then superimposes the low-level pulse current with adjustable amplitude and the pulse current with fixed amplitude to obtain the set amplitude 1. Set the pulse current of the pulse width, so as to reduce the power consumption of the field effect tube of the voltage-controlled constant current source. At the same time, since the constant current module is composed of a main voltage-controlled constant-current source and a differential compensation voltage-controlled constant-current source connected in parallel with the main voltage-controlled constant-current source, the differential compensation of the voltage-controlled constant-current source for the voltage-controlled voltage signal is , to obtain a peak pulse current, so that the rising edge of the final output pulse current is compensated, the rising time of the pulse current is shortened, and the quality of the output waveform is improved.
Description
technical field [0001] The invention belongs to the technical field of signal generation, and more specifically relates to a pulse current source based on a combination method. Background technique [0002] With the continuous progress of basic disciplines such as power electronics technology, the pulse current source has developed very rapidly, and has quickly occupied the relevant fields by virtue of the advantages of output current amplitude, pulse width adjustable in a wide range, compact structure, reliable operation and low maintenance cost. application field market. These pulse current source products are widely used in testing, industrial and military fields and play a very important role. [0003] The rise time of the pulse current signal is an important parameter to measure the quality of the pulse current waveform, and it is an important parameter that affects the output performance of the system where the pulse current source is located; at the same time, for la...
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IPC IPC(8): H02M9/00
CPCH03K3/57
Inventor 詹惠琴古天祥卿光明
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA