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AN105

Part Number	AN105
Manufacturer	Vishay Siliconix
Description	FETS AS VOLTAGE-CONTROLLED RESISTORS
Published	Nov 14, 2006
Detailed Description	www.DataSheet4U.com AN105 FETs As VoltageĆControlled Resistors Introduction: The Nature of VCRs A voltage-controlled r...
Datasheet	AN105 PDF File

Overview

www.
DataSheet4U.
com AN105 FETs As VoltageĆControlled Resistors Introduction: The Nature of VCRs A voltage-controlled resistor (VCR) may be defined as a three-terminal variable resistor where the resistance value between two of the terminals is controlled by a voltage potential applied to the third.
For a junction field-effect transistor (JFET) under certain operating conditions, the resistance of the drain-source channel is a function of the gate-source voltage alone and the JFET will behave as an almost pure ohmic resistor.
Maximum drain-source current, IDSS, and minimum resistance rDS(on), will exist when the gate-source voltage is equal to zero volts (VGS = 0).
If the gate voltage is in...

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