mosfet boost zener

[scaesic]

if i am going to run the mosfet boost on 15 v instead of 9, should i change the ener to a 15v zener?

[Gus]

The zener has little to do with the supply voltage.  It has more ot do with the gate breakdown voltage.

[markm]

Just out of curiousity, why are you going to run this circuit at 15V?
(I always ask this question, everytime someone posts this topic......ever notice that?)

[scaesic]

im using it as a preamp in an amplifier which has a tone section which needs 15v, i figured why not have a bit more headroom and just use the power thats there.

[markm]

Ahhh, I see.
Do a search for "Ruby" and look at momo's posts.
I think he used the MosFET Booster as his preamp and was going to run it at 12V.
This could save ya some time. 

[scaesic]

is that a warning of some kind? or just something that might be useful?

[markm]

is that a warning of some kind? or just something that might be useful?

No, There should be some useful info I think. 

[scaesic]

cheers!