Using JFET as diode.... need a little learnin'!

[plexi12000]

hi dudes-  i know there are several ways but i was wondering about a few things.  i was looking around online and one article says to short the drain and source leads.

and "forward bias the drain/source to the gate terminal".    can someone explain what exactly that statement means? 

once you connect the jfet's drain and source leads....you then have two "leads", and it'll only work in one 'direction' right?

[Kipper4]

Hey Plexi

Found this for yer man.


http://www.diystompboxes.com/smfforum/index.php?topic=96443.msg837986#msg837986

[idy]

MOSFETs are used frequently like this, usually with a diode to keep the body diode from working and "swamping" the much higher threshold for MOSFET action.
There are a few pedals that use JFETs as clipping elements. Search for Mad Professor Stone Grey Distortion:
http://revolutiondeux.blogspot.com/2012/01/mad-professor-stone-grey-distortion.html

[plexi12000]

cool--  thanks a lot for the links fellas!  i aint too bright with the technical stuff! LOL  that's a cool website-  lots of projects!

[antonis]

You can always try a "current-regulator diode" (like 1N5283 - 1N5314 series) which isn't nothing else than a JFET with it's Gate tied to Source..
(they are shorted for specific currents - something like a current analog to a Zener diode..)

P.S.
I've never tried them - that's why I propose it to you..