The tiniest pcb I've ever made (FET preamp) (pics)

[SirPoonga]

Tubescreamer... it can be made a LOT smaller than my posted version

Yep, goto Tillman's site.  he has it in the end of a cable!

Next I suppose someone will make this with surface mount parts...

[Paul Marossy]

Next I suppose someone will make this with surface mount parts...

Yep, that's about the only way that you can get it any smaller.  :wink:

[Fp-www.Tonepad.com]

Bottom side:

http://www.tonepad.com/photoessay.asp?photoEssayID=23&sequenceNo=3

[Hal]

how much current does that draw - could you run it off button cells ?

pretty sweet.

[Paul Marossy]

Are you thinking a bunch of a button cells in series? That's a good question. My intuition tells me that they wouldn't last very long and would be more expensive than a 9V battery.

[Torchy]

crp

[Hal]

Are you thinking a bunch of a button cells in series? That's a good question. My intuition tells me that they wouldn't last very long and would be more expensive than a 9V battery.

some of the FET pedals only draw a couple of uA...
CR2032's are rated around 200 mah, and can be had for a dollar, so 3 lithium cells in series would have a life similar to a 9v, and wouldn't cost _that_ much more...

[Torchy]

You know the piezo gas lighters in hardware shops ? They take a 12V battery thats the size of four button cells  :idea:

[Torchy]

crp

[Paul Marossy]

some of the FET pedals only draw a couple of uA...
CR2032's are rated around 200 mah, and can be had for a dollar, so 3 lithium cells in series would have a life similar to a 9v, and wouldn't cost _that_ much more...

Hmm... you learn something new every day! I guess it's possible, then, because a 9V battery lasts quite a long time with that Tillman circuit. That's actually cool because I have one guitar that I would like to put this circuit into, but the cavity is too small to fit a 9V battery. Has anyone ever used those type of batteries for this circuit?!

[Fp-www.Tonepad.com]

Torchy: VERY NICE!

Current draw is around 0.45mA.

[R.G.]

Cute!