Want to make your guitar active? Build a JFET Booster that 'emulates' a tube triode stage #pcbway#

Only $5 for 10 PCBs and every new member get $5 bonus. + Express 24 hour / 48 hour service on https://www.pcbway.com/ I have been using JFETs for many years in guitar pedals and effects. Many of my guitarist friends love the smoother distortion that these devices produce, when compared to BJT or op-amp devices. However, my fascination with these components extends further ... they are known to emulate a tube amplification stage quite well, when properly biased and carefully selected. Much has been written about this characteristic, describing their similarities and differences, so my research has been greatly simplified by consulting some incredibly well presented papers on the subject. One site in particular takes this further - Runoffgroove.com. They use the research available to attempt to emulate the front-end of a fender guitar amplifier, and achieve quite amazing results. They call their circuit the Fetzer Valve, and you should really visit their page for a truly amazing description of their design process. They also provide an online calculator that allows you to define the component values for optimal biasing of any particular jfet, after determining its cut-off voltage (or pitch-off voltage), and its Idss, both easy to measure using a simple schematic that they also provide. I list a few of the reference links for your information, and in recognition of the amazing work that their authors have presented to all of us. I hope you enjoy the project, and if you want to order PCB's for the project, here are the share links on the PCBWay website: Though-hole: https://www.pcbway.com/project/sharep... SMD: https://www.pcbway.com/project/sharep... References: https://www.runoffgroove.com/fetzerva... https://www.scribd.com/doc/65330169/T... https://nexp.pt/triode.html If you would like to have your own PCB's made for this project, the PCBWay share link is: (coming in a day or two) You can now support the channel: Patreon: mcaldeira https://paypal.me/macaldeira #tuberadios #antiqueradio #radiorestoration _____HUNDREDS OF OTHER VIDEOS TO CHOOSE FROM____ DIY TEST GEAR: The title says it all: Zener Diode Tester - Part 1. The build. RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment: How to safely check the Power Transformer ... HowTo's: Various videos on some simple techniques and projects: Extend tube radio FM band above 100MHz wit... See also playlists on some other completed restoration projects. PHILIPS BX750A: Philips BX750A tube radio restoration - Pa... TELEFUNKEN OPUS 2114: Telefunken Opus 2114 stereo tube radio res... SABA UW-175-Z 3D: Saba UW 175-Z 3D tube radio restoration - ... GRUNDIG 1070: Grundig 1070 tube radio restoration - Part... SCHAUB-LORENZ GOLDY 58 type 3020: Schaub-Lorenz Goldy 58 type 3020 tube radi... BUSH VHF64: Bush VHF64 tube radio restoration - Part 1... GRUNDIG 3060A: Grundig 3060a tube radio restoration - Par... TELEFUNKEN OPERETTE 8: Telefunken Operette 8 tube radio restorati... GRAETZ SUPER 171W: Graetz Super 171W tube radio restoration -... LOEWE-OPTA MAGNET 3737W: Loewe-Opta Magnet 3737W tube radio restora... BRAUN ATELIER 3: Braun Atelier 3 LOEWE-OPTA TRUXA STEREO 4741W: Loewe-Opta Truxa Stereo 4741W GRAETZ COMEDIA 616: Graetz Comedia 616 tube radio restoration ... SABA FREIBURG W2: Saba Freiburg W2 (WII) restoration GRAETZ MUSICA 4R417: Graetz Musica 4R417 restoration You may also be interested in ... CAPACITOR LEAKAGE TESTER: Capacitor leakage tester design & build DI...