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4th May 2008, 04:38 PM
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diyAudio Member
Join Date: Apr 2008
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Help for the JFET preamplifier
I want to design a differential input JFET preamplifier whose input signal is 0.1Hz-20Hz and supply voltage is 5V.The gain needs to be more than 10(Vout/Vin).
I have made some pspice simulation with various JFET tubes in pspice library by building basic self bias voltage circuit.Basically the gain can achieve 10 at high frequency (>1KHz) but can't meet the requirment during the range from 0.1Hz to 20Hz. So can someone recommend certain featured JFET or amplifier circuit? Thanks a lot. |
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