Frequency shift transmitter for preventing electric current impacts
A technology of current impulse and transmitter, which is applied to vehicle route interaction equipment, railway car body components, railway signal and safety, etc. Longevity and the effect of reducing the failure rate
Inactive Publication Date: 2014-12-10
SHENYANG RAILWAY SIGNAL
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Problems solved by technology
[0002] At present, when the frequency shifting transmitter performs power switching and load switching in the non-insulated frequency shifting automatic blocking system, there is a problem of high current impact in the triode inside the power amplifier circuit, which may easily cause damage to the triode, which will lead to failure of the frequency shifting transmitter and reduce frequency shifting. Transmitter service life
Method used
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Embodiment Construction
[0008] It includes a frequency-shifting transmitter power amplifier circuit and a common-mode inductor L, and two terminals with the same name on one side of the common-mode inductor are respectively connected to two output terminals S1 and S2 of the frequency-shifting transmitter power amplifier circuit. The frequency-shifting transmitter effectively suppresses the surge current experienced by the triode inside the power amplifier circuit at the moment when the non-insulated frequency-shifting automatic blocking system performs power switch K1 and load switch K2.
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The invention provides a frequency shift transmitter for preventing electric current impacts. The problem that at the moment when an uninsulated frequency shift automatic blocking system conducts power switching and load switching, the frequency shift transmitter restrains impact currents borne by triodes inside a power amplification circuit is solved. The frequency shift transmitter is characterized by comprising a frequency shift transmitter power amplification circuit and a common mode choke, and the two same-name ends of one side of the common mode choke are connected to the output end S1 and the output end S2 of the frequency shift transmitter power amplification circuit respectively. The frequency shift transmitter has the advantages that the triodes inside the power amplification circuit are effectively protected, the failure rate of the frequency shift transmitter is further lowered, and the service life of the frequency shift transmitter is prolonged.
Description
technical field [0001] The invention relates to a frequency-shifting transmitter in a non-insulated frequency-shifting automatic blocking system in a railway signal system, in particular to a frequency-shifting transmitter for preventing current impact. Background technique [0002] At present, when the frequency shifting transmitter performs power switching and load switching in the non-insulated frequency shifting automatic blocking system, there is a problem of high current impact in the triode inside the power amplifier circuit, which may easily cause damage to the triode, which will lead to failure of the frequency shifting transmitter and reduce frequency shifting. Transmitter lifetime. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a frequency-shifting transmitter capable of preventing current impact. [0004] The purpose of the present invention is achieved like this: i...
Claims
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Inventor 贾敏捷杨力郝学强王进忠王洋刘斌吕树远周海涛刘嘉胡军鹤
Owner SHENYANG RAILWAY SIGNAL