Bad Cat Hot Cat questions

[Transmogrifox]

What would be the effect of using a switching diode from gate to drain on a jfet.
Any advantages, Disadvantages. and which fet would it work best on if any?
Thanks.

As seen here in the semenov boogie thread
I realise the diodes are only used on the mosfets here.

http://www.diystompboxes.com/smfforum/index.php?topic=110165.0

That is for ESD or other transient overvoltage protection on the MOSFET.  There is no benefit at all to this on a JFET.  This is built into the JFET by the nature of the PN junctions between G-S, G-D, so it would not do anything beneficial. 

If you oriented it the way it is for a MOSFET, then the JFET drain being more positive than the gate would forward bias the diode and make the circuit not even work.

[Kipper4]

Thanks man
ESD that makes sense.
However when I tested it this morning with the diode in place the circuit still worked but it didnt really bring anything to the game so I took it out.
No sense in wasting a 2bit diode if it isnt a game change.
cheers Transmogrifix everyday I'm learning. I just wish my miniscule brain could retain more of it.

[Kipper4]

I'm still getting a lot of unwanted noise. I'll try to explain it tommorow and maybe get some help eliminating it
thanks guys