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Posttime: 27 Jun, 2012 Views: 162 Author: Jacky

Main Electromagnetic Interference Source Within the Electronic and Electrical products

Switch circuit of the equipment switching power supply: the interference source frequency is from tens of kHz to hundreds of kHz, the ultra harmonics can reach to tens of MHz.

Rectifier circuit of the equipment dc power source: the power frequency rectifier noise frequency can reach to hundreds of kHz; the ultra harmonics can reach to tens of MHz.

The brush noise of the electric equipment dc motor: the noise frequency can reach to hundreds of MHz.

The running noise of the electric equipment dc motor: the ultra harmonics can reach to tens of MHz.

Harassment lunch of the frequency control circuit: the interfering source frequency is from tens of kHz to tens of MHz.

The equipment switching noise of the running sate: noise frequency can reach to hundreds of MHz.

Crystals and digital circuit electromagnetic disturbance of the intelligent control equipment: the interference source is from tens of kHz to hundreds of MHz, the ultra harmonics can reach to hundreds of MHz.

Microwave leak of the microwave facilities: the interference source frequency can be several GHz.

The electromagnetic harassment launch of the electromagnetic induction heating equipment: the dominant frequency of the interfering source can be tens of kHz, the ultra harmonics can be tens of MHz.

The vibration and the harmonic of the high frequency tuned circuit of the TV receiving equipment: dominant frequency of the interfering source can be hundreds of MHz; the ultra harmonics can be several GHz.

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Environmental Chamber
AC and DC power supply
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