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Title: matchbox build help
Post by: changes on November 21, 2004, 06:18:01 PM

i've breadboarded it
used a 2n7000 at the input stage
well when i had the led as in the schem the mosfet drain was at 7.9V and almost no sound at all or something like a misbiased fet.when i reversed the led then drain voltage was 4.5 and i was getting sound...
can some explain it???
have i done somethin wrong?

Title: matchbox build help
Post by: RDV on November 21, 2004, 06:34:10 PM

Pinout?

RDV

Title: matchbox build help
Post by: RDV on November 21, 2004, 06:43:20 PM

2N7000 pinout is reversed from BS170.

Looking at face:

BS170 = DGS
2N7000 = SGD

HTH

RDV

Title: matchbox build help
Post by: changes on November 21, 2004, 06:43:58 PM

no i think not i checked twice

edit:
well this is a funny one...
i had the led pins pre cut so i took the - pin for the + and vice versa... :lol:

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DIY Stompboxes => Building your own stompbox => Topic started by: changes on November 21, 2004, 06:18:01 PM