Transcription of The FET Constant-Current Source/Limiter
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The FET Constant-Current Source/Limiter
AN103 Siliconix10-Mar-97 1 The FET Constant-Current Source/LimiterIntroductionThe combination of low associated operating voltage andhigh output impedance makes the FET attractive as aconstant- current source. An adjustable- current source (Fig-ure 1) may be built with a FET, a variable resistor, and asmall battery. For optimum thermal stability, the FET shouldbe biased near the zero temperature coefficient +Figure Transistor current SourceRSRLNO TAGW henever the FET is operated in the current saturated re-gion, its output conductance is very low.
AN103 Siliconix 10-Mar-97 1 The FET Constant-Current Source/Limiter Introduction The combination of low associated operating voltage and high output impedance makes the FET attractive as a
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