SEVEN : A highly tweakable silicon fuzz.

[Dragonfly]

Wow!!! A New circuit!!! Looks very interesting. Yeah, a standart circuit, but yet interesting. What about a booster on/off switch? So there's "two channels": a FF sound and a boosted FF sound.

A switch for boost on/off would be easy.

I set up the "boost" control so that at minimum, it will have little effect.

[Dragonfly]

I see we all have fallen for rounded "fillet" wiring schematics.

yes, we have...Damn Beavis !

Some remarks: I think seven is maybe too much.
- since the "sustain" pot gives gain compensation, the 100ohm resistor at Q2's emitter is possibly not necessary

to my understanding, it helps stabilize the bias of Q1. May or may not be necessary, but for the $.02 that a resistor costs....

- nor does the "fuzz" pot very much different, unless you make the bypass cap very small, giving the "fuzz" control frequency dependancy.

The "Fuzz" is a standard FF type control

- "boost" = same remarks as on "fuzz"

actually, the boost control effects the circuit in a much different way than the fuzz control...sure, theyre somewhat interactive, but having both definitely increases the flexibility of the circuit.

- "sag", "tone", "bias": hell yeah, why not! 

Don't we just love the phono preamp .... euhm sorry, the "Fuzz Face" or what ?!

Yes, we do.

[Gila_Crisis]

cool design dragnfly.

and how does it sound??

[Gus]

How about the Hot Silicon?

[Dragonfly]

How about the Hot Silicon?

Havent built it, but heard it sounds great.

[ambulancevoice]

are you gonna do a vero layout too?

[$uperpuma]

*snicker*

[ambulancevoice]

yes...

[gnognofasciani]

Hi folks, I've been lurking for a long time around here...but now It's time to start contributing!
This Fuzz very interesting to me and I prepared a pcb and a layout. I'm going to build it in a few days, I hope...
You can find everything you need in this page, just scroll down a bit 
http://www.fennecelectronics.it/smf/index.php?topic=2074.0;topicseen
Hope this can help someone!


P.s. Please let me know if you find an error, or more than one !

[tcobretti]

Welcome to the board and nice first post, gnogno!

[markm]

Welcome to the board and nice first post, gnogno!

+1
Yes, welcome to our little part of the net!

[Yun]

Damnit andy!  My bank account hates you, man.  everytime i see any of your posts with a schematic- i HAVE to build it 

[gnognofasciani]

Thank you for your welcome

I forgot to post the BOM:
R1 1M
R2 1M
R3 100
R4 10k
R5 4k7
R6 100
R7 33k
R8 33k
R9 1k
R10 4k7

C1 1u
C2 100n
C3 100n
C4 100p
C5 22u
C6 22n
C7 22n
C8 47u

D1 1n4001

T1,T2,T3  2n5088 or any similar NPN silicon

SAG       100k lin
BIAS      10k Lin
GAIN      100k Log
FUZZ      1k Lin
SUSTAIN   100k Lin
TONE      100k Lin
VOLUME    100k Log


Bye!

[blackbirdneo]

anyone care to help me on how to add an on/off switch for the boost? thanks

[hendriko]

if you could post a PCB/vero/perf layout - i'd appreciate it

looks good!
cheers

[tungngruv]

I think this would make the Boost switchable but it's late so look it over first.

[alex frias]

Does anybody still have the layout and pcb pics? The links here and at the italian site seem dead (some expired sharing net service ).

Thanx for any help.

[andrew_k]

http://aronnelson.com/gallery/v/DRAGONFLY-LAYOUTS_0/album87/SEVEN.gif.html

[Derringer]

Is this schem gone ?


I'd really like to see what it looks like

[suregork]

http://www.freewebs.com/soulkitchen/schematics.htm

you can find it there..