Thursday, September 6, 2012

cell phone jammer is ecologically friendly

see the opening and shutdown in the output of the bridge arm points available in three different level, turn on and off in output point of the bridge arm available in three different level in the following table:cell phone jammer can be conveniently fixed to the tripod.  three-phase inverter bridge arm consisting of three-phase inverter composed of three bridge arm, according to the three-phase bridge arm, according to the three-phase bridge arm of U, V, W, different combinations, different combinations, and ultimately available to the three-level inverter = 2733 switch mode. three o'clock level inverter output voltage and filter output voltage map picture shows the point level inverter output voltage and by the filter output voltage waveforms of the motor. picture shows the point level inverter output voltage and by the filter output to the motor voltage waveforms before the filter, the output voltage harmonic distortion 29% filtered down to about 4 percent before the electric filter, the machine's current harmonic distortion can be reduced from 17% to about 2 percent three-point level inverter main circuit of three-point-level inverter main circuit structure of three-level voltage source inverter output voltage, three-level voltage source inverter output voltage and current waveform in Figure protect the common mode voltage limiting circuit limiting circuit M reactor Figure 8-10 three-level inverter shown in Figure 8 -9 to the main circuit diagram of three-level variable products,cell phone jammer is ecologically friendly.  the rectifier circuit to the main circuit of the three-level variable product structure diagram, rectifier circuit 12 pulse three-level converter products main circuit structure diagram red diode pulse as shown in Figure rectifier structure. cell phone jammer is of steel frame
Inverter part of the power devices can be red diode structure. inverter part of the power devices can be IGCT, the freewheeling diode freewheeling diode integrated in the IGCT IGCT switching frequency of the switching frequency is about 600Hz. common-mode reactor. integrated in the switching frequency and inverter for about accommodated separately accommodated separately, using a long cable between the transformer secondary winding and the rectifier bridge input inverter, its main function is to bear the total mode voltage and limit high-frequency leakage current cable longer,cell phone jammer can be used indoors and outdoors.  its main function is to bear the common-mode voltage and limit high-frequency leakage current due to the low impedance of the output filter capacitor, the motor to withstand the common mode voltage is very low due to the output The low impedance of the filter capacitor, the motor withstand common-mode voltage is very low, common-mode voltage is shared by the input transformer and inverter voltage shared by the input transformer and inverter.

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