Introducing the "Cream Pie" !

Started by Dragonfly, October 22, 2006, 02:03:50 AM

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Barcode80


dosmun


Barcode80


Gilles C

#243
I'm almost done with building the Cream Pie V2, and I won't have time to finish it completely until a few days maybe. But I wanted at least to be able to show the stripboard for now.

I just put a CV7112 in there for the picture and to verify my layout. It's not soldered as I will use a socket anyway...

And I also have to make the 2 sides I had to cut a little smoother.



Ok... I also needed a NEW picture to upload on Aron's DIY Stompboxes Gallery...  :icon_redface:

Gilles

jmasciswannabe

Hey guys. Just got around to putting this one together and I am stumped. I feel like an imbecile cause it's such a small circuit that I should be able to figure it out. I haven't messed around with these PNP germaniums and positve ground wiring before though. I ordered a few from smallbear and I am assuming the tabs on them denote the emitter. I put them in my multimeter and the HFE reading I got back suggested that my assumptions were correct. I plugged it into the above layout with the emitter going to lug 3 of the gain. I reversed the diode and 47uf electro as well as ran the battery + to the board ground and the battery - to the board +. When biasing the transistors collector to 4.5 I get .08 at the base and 0 at the emitter. This is by attaching the meter probe + to ground and using the - probe to gather readings on the transitor legs. It passes signal and the volume works, but its gatey and splaty and a bit noisy making me think something is wrong with the transsistor. The first one I tried did the same though and was hissy. Anyone have any suggestions before I try my last transistor?
....the staircase had one too many steps

Barcode80

your base voltage is too low. check R2 for correct value/solder bridges.also remelt all solder connections there

jmasciswannabe

I had just started my mantra of  "mama they try and break me" when i decided to lift the bridge that connects ground to c3.....lo and behold, solder had gone through the perf and attached itself to it at the hole right by the emitter, thus grounding it out as well as lug 3 of the gain.

Must wait until morning before firing it back up. Safer. Thanks Barcode80 for the help. 
....the staircase had one too many steps

jmasciswannabe

Oh man this does sound great. Unfortunately I am no pro at boosters but I should have built one a while ago. Can't wait to set this one up in front of yun's super muff. Thanks dragonfly or the circuit and dosmun for the layout and everyone else who contributed!
....the staircase had one too many steps

markm

The Creampie is a simple yet Fantastic sounding circuit.
Dragonfly is Amazing!  :)

stumper1

Is there a V2 schem available?  The link posted a page back doesn't seem to have it anymore.

Thanks,
Deric
Deric®

dachshund

...or a V3 version of the schematic? Can you PM directly to our names here, or should I provide a no-spam email address? It looks like this might be your preference...
Thanks :)

markm

Check in Dragonfly's Gallery.....I think they are all in there.  :)

stumper1

Hey Mark, 8)

I just dug around his gallery again and either I'm stupid (quite possible) or it's not there anymore.  I'll try again........

Deric

Deric®

markm

Quote from: stumper1 on February 07, 2007, 04:59:13 PM
Hey Mark, 8)

I just dug around his gallery again and either I'm stupid (quite possible) or it's not there anymore.  I'll try again........

Deric



No, on the contrary, I'm probably wrong!
He may have removed it.  :icon_confused:


zjokka

Sorry to dig this up, but does anybody still have the Cream Pie schematic on his hard drive?

all the links to layouts seems dead.

thanks so much
zj

Barcode80

links to the layout and/or schem are dead because dragonfly removed all versions of the cream pie for numerous reasons. please don't ask him about it, i'm sure he is tired of hearing it...

$uperpuma

You can Purchase a Cream Pie at Tone Factor :)  Good for Andy! His Ultra Lord Fuzz is available there too!
Breadboards are as invaluable as underwear - and also need changed... -R.G.

zjokka

ok, will have to invent one myself, not to worry.
I'll try germaniumizing the sparkle boost then.

the clip is quite dissapointing, I found

http://www.tonefactor.com/proddetail.php?prod=CPD

Marcos - Munky

Believe in me, the Cream Pie is way more than this clip. I still have to box mine, it will be forever in my pedalboard.