Houston, we have fuzz, i repeat: WE HAVE FUZZ !!!

Started by JFX09, May 10, 2008, 09:26:32 PM

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JFX09

Wooohoohooo !!

OK. sorry. This breadboard had only given me a headache untill now :icon_mrgreen:

well, more like very high gain distortion, but anyway

Still a few questions:

Has the 5k gain pot any use ? It doesnt seem to do much.

Is it normal for the trim pot to take everything out abruptly before the end of it's course ?

I breadboarded the RoG multi-face  2N7000 x 2, circuit C on Tim Escobado's The Many Faces of  Fuzz page: http://www.geocities.com/tpe123/folkurban/fuzz/fuzzyfaces.html

My Voltages:

Q1: 

D: 3,69
G: 1,78
S: 0

Q2:

D: 4,38
G: 3,69
S: 1,78

Thanks,

jf
Happiness is a effin' hot soldering iron

Paul Perry (Frostwave)

I haven't built it, but just looking at it, I can imagine the trim pot moving the bias of one of the fets to cutoff. So it's possible that the unit doesn't work over the whole range of the trimpot - but exactly how far it would work, depends on the cutoffs of the fets, which can vary.

JFX09

Yes, i'm seeing that from swapping transistors (I've been at it all night, and frankly  the last time I was so eager to get up in the morning was on the day after christams 1976 to play with myrace track   :icon_wink:)

still not much response from the 5k gain pot, maybe I've wired it improperly.

thanks Paul

jf
Happiness is a effin' hot soldering iron