VCC filtering

<electronics> A technique for reducing the amount of Radio Frequency Interference spread via power supply connections. VCC is a common name for the non-ground power supply line in circuits based on bipolar transistors.

When part of a circuit generates lots of radio-frequency noise, that portion of the power plane can be isolated from the rest of the circuit and power delivered to it via a low pass filter, usually a PI filter, as shown in the diagram below.

      source   __inductor___   load
		  |                |
	      capacitor        capacitor
		  |                |
	       ground           ground

This helps to shield the rest of the circuit from the noise generated by the load.

Last updated: 1998-01-26

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Nearby terms: VBScript « vbx « vc « VCC filtering » VCD » VCID » VCL


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Copyright Denis Howe 1985

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