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Simple JFET Audio Preamps - Ciphers By Ritter
http://www.ciphersbyritter.com/RADELECT/PREJFET/JFETPRE.HTM
The N-JFET Audio Preamp Schematic The input transistorQ2 is an N-channel JFET. JFET must be selected from among multiple devices for the desired bias value. Fortunately, due to the low current involved, desirable devices can come from a wide range of device types. JFETs also vary with respect to gain and noise level, so best
Simple JFET Preamp - AUDIO WORKSHOP
https://blog.audioworkshop.org/simple-jfet-preamp/
A JFET preamp for beginners. Simple yet elegant. Low noise. The following is an example for a very simple and high quality JFET preamp. You can use this to amplify a very low signal sources. FET transistors are usually not used independently in preamplifiers. In most of the cases they are paired with bipolar transistors.
Simple JFET Audio Preamps
https://preampsinfo.blogspot.com/2011/09/simple-jfet-audio-preamps.html
preamplifier microphone tube The input transistor Q2 is an N-channel JFET. Each particular JFET sets a particular output bias voltage, so the JFET must be selected from among multiple devices for the desired bias value. Fortunately, due to the low current involved, desirable devices can come from a wide range of device types.
JFET Moving Coil (MC) Pre-Preamp Kit - DIY AUDIO PROJECTS
https://diyaudioprojects.com/Solid/JFET-MC-Pre-Preamp-Kit/
The Boozhound Laboratories JFET Moving Coil Pre-preamp kit includes PCB and all passive components to populate the PCB. Four Stand-offs for mounting the PCB are included. You have to provide your own chassis, power supply (12-24VDC), and various connectors. The Boozhound Laboratories JFET Moving Coil Pre-preamp kit features:
JFET Audio Preamp with Piezo Guitar Pickup | HACK A WEEK
http://hackaweek.com/hacks/jfet-audio-preamp-with-piezo-guitar-pickup/
JFET stands for Junction Field Effect Transistor. These transistors are well suited for high impedance inputs and since a Piezo electric device measures in the multi-megohm range it’s a perfect match. I found the schematic for this circuit on this webpage: Design Guidelines for JFET Audio Preamplifier Circuits By Mike Martell Thanks Mike!
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