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JFET Buffer Bias Calculator
A JFET buffer (Common Drain Amplifier) is useful in that it has extremely high input resistance as compared to a BJT buffer. The input resistance is equal to RG, which is typically very large, on the order of 1M ohm.
Figure 1 - N-Channel JFET Buffer
Equations:
IDS= IDSS(1-VGS/Vp)2
RS= VRS/IDS
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