FUZZ FACE OSCILLATION

[burntfingers]

ON MY HOME MADE FUZZ FACE I FIND THAT IF I TURN THE GUITAR VOLUME ALL THE WAY DOWN, THE PEDAL EMITS A LOUD AND CONSTANT TONE, THE PITCH OF WHICH CAN BE CHANGED BY MOVING DRIVE POT ON THE THE PEDAL OR TONE CONTROL ON THE GUITAR.

THIS IS NOT TOO MUCH OF A PAIN AS LONG AS I REMEMBER NOT TO TURN VOLUME DOWN BEFORE CLICKING OFF THE PEDAL, BUT IS IT NORMAL?!

IF NOT, WHERE DID I GO WRONG IN THE BUILD?

CHEERS.

[Seljer]

thats normal

you can get rid of it by placing a resistor of about 20kohms to 50kohms at the input of the pedal (between the input capacitor and the jack), it takes a rather small of the gain (it tames down the pedal just a little bit) but it should get rid of that buzzing note

you also get the same oscillation with a wah wah pedal if you've move it into the heel position, in which case the solution is to add a buffer on the output of the wah

[brett]

Congratulations.  You are the latest member of a group of people who become radio receivers when we turn our FuzzFaces down.
I suspect that the sounds that you hear are the lingering tones of the background radiation from the Big Bang.  I kid you not! 

[tcobretti]

If the pedal uses Si transistors, try putting a 50-100pf transistor across the collector and base of Q1.

[gaussmarkov]

thats normal

you can get rid of it by placing a resistor of about 20kohms to 50kohms at the input of the pedal (between the input capacitor and the jack), it takes a rather small of the gain (it tames down the pedal just a little bit) but it should get rid of that buzzing note

+1.   

[burntfingers]

OK THANKS FOR THE INFO GUYS, I THINK I'LL LEAVE IT AS IT IS.....I LIKE THE IDEA OF PICKING UP COSMIC VIBES FROM OUTER SPACE!