JFET Curve Tracer

PublishTime：2022-01-27

●Junction field-effect transistors (JFETs), unlike bipolar transistors, do not easily lend themselves to analytic solutions of bias networks. By their very nature, JFETs are voltage controlled devices. Gate to source voltage (control voltage VGS) variations of several volts can exist within a given part type at the same operating conditions, causing the problem. Multiple suppliers and inadequate, or non-existent, data sheet curves compound the problem further, requiring data from the suppliers or the use of a curve tracer.
●Figure 2 shows a simple curve tracer that can be used with any oscilloscope, and can be built using a quad op amp and a handful of parts. The circuit displays drain current versus gate voltage for both P and N-channel JFETs at a constant drain voltage.

Brand of Product：	ON Semiconductor
Part#：
Product Category：	JFET Curve Tracer 、 Junction field-effect transistors More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2021/8/6
Version Number：	Rev. 1.0
Data Encoding：	AN-6610
Data Size：	544 KB

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Integrated Circuits