The JFET Preamp we are building was originally based on a circuit used by Scott Hampton in his HAMPTONE JFET preamps.  The documentation included here includes his original article as it appeared in TapeOp, and was is now the simplified version of the schematic we will be building.

HOMEWORK for week-5: Read Scott's Article and draw the simple JFET five times

• Scott's JFET article
• Scott's simple JFET schematic (with our part values)

HOMEWORK for week-6: Draw our Vari-fi JFET circuit five times

• Vari-fi DI: revised Spring 2010 (circuit  with variable feedback and optical limiter)
• Please note that the yellow area of the circuit is identical to Scott's original / simple JFET circuit.