High voltage fast edge pulse generator and method
A pulse generator and pulse technology, applied in the direction of electric pulse generator circuits, etc., can solve the problems of output waveform distortion and so on
Inactive Publication Date: 2016-09-21
上海三基电子工业有限公司 +1
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Problems solved by technology
However, in practical applications, especially in high-frequency circuits, unsuitable probes will often distort the output waveform; in EMC, the standard has strict requirements on the leading edge pulse width of the output waveform, so suitable and accurate probes and oscilloscopes are especially important
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Embodiment Construction
[0016] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.
[0017] Such as figure 1 As shown, a high-voltage fast-edge pulse generator provided by the present invention includes a control unit, a high-voltage power supply and a pulse forming circuit. The control circuit controls the high-voltage power supply to provide a working voltage to the pulse forming circuit. The above control circuit provides working voltage. The following is a further description of each main circuit part:
[0018] Control circuit:
[0019] The control circuit of the present invention takes the control unit composed of single-chip microcomputer SM89516A as the core and its peripheral circuit. The control unit mainly controls liquid crystal display unit, key operation unit, relay action unit and DA given unit and other parts.
[0020] The liquid crystal display unit generates a developing liquid crystal driving ...
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The invention provides a high-voltage fast-edge pulse generator, which includes a control unit, a high-voltage power supply and a pulse forming circuit. The control circuit controls the high-voltage power supply to provide working voltage to the pulse forming circuit. It is characterized in that the pulse forming circuit includes a high-voltage capacitor and a current limiting Resistors are connected in series with delay cables, switches and loads with characteristic impedance R1, and then connected in series at both ends of the high-voltage capacitor. The load is either an internal load or an external load. The matching impedance is R2, R2=R1, and the current is limited. The impedance of the resistor is much larger than the characteristic impedance R1 of the delay cable. Another technical solution of the present invention is to provide a rectangular pulse generation method using the above-mentioned pulse generator. The rectangular wave generated by the invention can detect the performance of the probe, and can analyze the technical parameters and performance of the probe in order to provide an ideal signal source for the probe, attenuator or other detection tools.
Description
technical field [0001] The invention relates to a rectangular pulse generator and a method with a fast cutting edge (picosecond level), high voltage (4kv), and continuous triggering, which belong to electronic technology and electromagnetic compatibility technology. Background technique [0002] Probes and attenuators are widely used in electronic technology and electromagnetic compatibility technology. They are electronic components that connect the circuit under test and the input end of the oscilloscope. Therefore, the accuracy of the signal under test has a great relationship with the probe; the probe is often limited by the bandwidth of the probe itself. , frequency and attenuation coefficient, and distorted or inaccurate waveforms have a great impact on the research and analysis of waveforms, and even bring great losses, so a probe with appropriate bandwidth and accurate conversion is very necessary. [0003] When measuring the circuit under test, we often ignore the i...
Claims
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IPC IPC(8): H03K3/02
Inventor 张君施滨洪浩钱枫来磊蔡青
Owner 上海三基电子工业有限公司