WANG Guangjun, MIN Deshun. Design of a novel fast turn-off circuit of transient electromagnetic transmitter[J]. Journal of Mine Automation, 2016, 42(11): 77-80. DOI: 10.13272/j.issn.1671-251x.2016.11.019
Citation: WANG Guangjun, MIN Deshun. Design of a novel fast turn-off circuit of transient electromagnetic transmitter[J]. Journal of Mine Automation, 2016, 42(11): 77-80. DOI: 10.13272/j.issn.1671-251x.2016.11.019

Design of a novel fast turn-off circuit of transient electromagnetic transmitter

  • In view of problem that turn-off time of emission current of transient electromagnetic transmitter is overlong caused by parasitic inductance of the transmitter coils, a novel fast turn-off circuit was designed. During the decline of transmitting current, the fast turn-off circuit uses transistors to provide an additional new discharge circuit, which takes advantages of its large resistance and low discharge time constant to realize quick turn-off of the transmitting current. The results of simulation and experiment show that the novel circuit can decrease the turn-off time of transient electromagnetic transmitter effectively with high stability.
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