Different jfet batch numbers but close the same characteristics.
Probably all is OK in lucky day no spark
🙂 Static electricity - Wikipediathe same care with Mosfets or SIT's they are less delicate but I avoid pins contact with the body.
Some electronicians use Antistatic device - Wikipedia. Best regards
Yup, that's what I always use when handling FETs or SITs ... connected to PE of my house wiring (Earth Ground). Also, a soldering iron that's safe for parts sensitive to static electricity.
Once the FETs are soldered into the circuit, it's not really an issue anymore.
Best regards, Claas
So here is my Alps Pot mounting solution. I bought a bronze bearing off Amazon with a hole slightly smaller than the 9mm diameter of the Alps. I also bought a 9mm x .27 tap. I put flats on the bearing flange to hold it while tapping and also to tighten it later. I tapped it for the Pot shaft. I then made the hole in the faceplate slightly larger than the OD of the bearing shank. Put the Pot through the hole and screwed the flange screw in from the outside. Works very well.
Attachments
Jfets are pretty resistance to static. Your have to give them a pretty big zap
to break them. Tiny Mosfets, you want to be careful.....
to break them. Tiny Mosfets, you want to be careful.....
Finally finished putting together the B1 Korg in a nice chassis, combining what Claude and Dirk recommended. Thanks guys. No real listening yet as I am missing the knob for the pot as the extension coupler is still on the way. Thanks to Papa for his gift too!
Beautiful job! 🙂
I would only move the board as close as possible to front to have shorter leads to NUtube....
dewdrop #2851
Very nice build dewdrop! I like the design of your frontplate.
Very nice soundmachine!
Greets
Dirk
Very nice build dewdrop! I like the design of your frontplate.
Very nice soundmachine!
Greets
Dirk
Thanks Dirk! I bought it ready made.Very nice build dewdrop! I like the design of your frontplate.
Very nice soundmachine!
Greets
Dirk
Impressive! Very impressive. I just finished my "stock" build yesterday and I'm already thinking I need to build a "B1K on steroids" board and upgrade it.
B1 Korg on steroids ? Bias with SIC diodes in series ? With more "sand" inside ?
http://www.bartola.co.uk/valves/wp-content/uploads/2018/12/DHT-Preamps-ETF2018-final-notes.pdf
http://www.bartola.co.uk/valves/wp-content/uploads/2018/12/DHT-Preamps-ETF2018-final.pdf
source link : Bartola(R) Valves – All about electronic valves and hi-fi
Similar phono DIY can be MC version with Korg Nutube
MJ1904_(05)Nutube-hyhbrid-MC-preamp_KanedaA.pdf - Google Drive
MJ1905_(06)Nutube-hyhbrid-MC-preamp_KanedaA.pdf - Google Drive
Akihiko Kaneta build frequently with PSU in separate box connected by wires to the audio signal chassais with XLR connectors
Good information.
By the way, I see you are in Montpellier. It has been many years since I was there. Bringing back wine from Chateau de Flaugergues was a treasure.
I cannot read Japanese very well but those Japanese diy articles are so well done...even a perfboard layout included.
Thanks for that information. The idea of using the Nutube in that application is very interesting. But at this point, I've built exactly two projects and I don't think I'm ready for one in Japanese yet.
