wooly mammoth build

terryrocks · February 16, 2010, 05:10:27 PM

I'm trying to clone the circuit from a schem that I mostly understand. My question for anyone out there is this: what type of component is measured in units of kB?

terryrocks · February 16, 2010, 05:23:28 PM

potentiometers, right?

markeebee · February 16, 2010, 05:24:54 PM

Um, is it a pot?

If it says "100k B" that'll be a 100k ohm linear taper pot.

EDIT - sorry, you beat me to it!

terryrocks · February 16, 2010, 05:25:52 PM

yes, it is.

bumblebee · February 16, 2010, 06:03:47 PM

If you have any troubles (or have something else in mind) with this circuit PM me as I have a fair bit of experience with this one. I've built, tweaked, bent and mangled a ton of them.

terryrocks · February 16, 2010, 07:09:24 PM

thanks bumblebee. I appreciate your offering

terryrocks · February 17, 2010, 12:39:39 AM

http://media.photobucket.com/image/zvex%20wooly%20mammoth/zjokka/secretschemos/Mammoth_schem.gif?o=1

this is the schematic. It says transistor #1 needs HFE between 100-200. I tried to find a matching transistor on mouser, but am not sure how to make sure the HFE will be close to spec.
Also, the electrolytic caps have the required capacitance, but not voltage. Not sure what to do there either.

bluesdevil · February 17, 2010, 01:20:12 AM

I'm pretty sure I ended up with 2n4401's in mine, but the common 2n3904 should be in spec as well.
As far as cap voltages, 16v or 25 volt is fine for 9volt powered effects.
It's a good idea to get a multi-meter that measure transistor hfe..... also breadboarding this circuit to swap out components is a good idea before soldering everything. Maybe at least put in sockets for the trannies so you audition 'em to see what you like best.

terryrocks · February 17, 2010, 01:29:42 AM

Thanks for the help. I'll be ordering my breadboard at the same time as the components as this is my first build.

bumblebee · February 17, 2010, 01:46:28 AM

I've PM'd you the solution.

For the record, original WM's use 2N3904's and the mastotron (A slightly modified WM) uses 2N2222.

John Lyons · February 17, 2010, 02:09:24 AM

Warning: Thread hijack
Anyone have the distortron schematic?

terryrocks · February 17, 2010, 02:45:55 AM

I'm digging through smallbear right now trying to find parts.
All resistor values from the schematics are in terms of the unit "k". Does that represent ohms?

Also, when I'm sourcing capacitors I can find the right capacitance value, but with voltages of like 500V. Will those work with this circuit?

bluesdevil · February 17, 2010, 04:03:43 AM

Quote from: terryrocks on February 17, 2010, 02:45:55 AM
I'm digging through smallbear right now trying to find parts.
All resistor values from the schematics are in terms of the unit "k". Does that represent ohms?

Also, when I'm sourcing capacitors I can find the right capacitance value, but with voltages of like 500V. Will those work with this circuit?

"K" suffix is a thousand ohms. 1k equals 1,000 ohms.
They'll work, but they'll be huge. Are sure there aren't any smaller poly caps listed? Did you check under "low voltage" caps? I know they have 16 and 35 volt electrolytics, so you're set on anything over 1uf (also known as 1mf).

bluesdevil · February 17, 2010, 04:11:22 AM

Just took a quick look at the schematic and can see how it can be tricky to a complete newb. The "10nf" caps would be .01mf poly film caps on the Smallbear site.... this is where it gets confusing. Learning the conversions is a must. I'd be willing cobble up a parts order list for you if needed. Drop me a PM..... I have to hit the rack now, it's 4:oo AM here.

bumblebee · February 17, 2010, 04:26:05 AM

On smallbear look under LOW VOLTAGE PANASONIC CAPACITORS, don't buy the sprague 600volt ones as they are HUGE. And for the resistors you will need all "K" (Kilohms) there's no Ohms resistors in this build.

~arph · February 17, 2010, 10:56:20 AM

Quote from: John Lyons on February 17, 2010, 02:09:24 AM
Warning: Thread hijack
Anyone have the distortron schematic?

It's a BoR without the boost and an output cap switch.. ala the mastotron.

caspercody · February 17, 2010, 11:34:01 AM

Would you put this cap switch before, or after the filters on the BOR?

John Lyons · February 17, 2010, 12:35:31 PM

Quote from: ~arph on February 17, 2010, 10:56:20 AM
Quote from: John Lyons on February 17, 2010, 02:09:24 AM
Warning: Thread hijack
Anyone have the distortron schematic?

It's a BoR without the boost and an output cap switch.. ala the mastotron.

Oh, ok...I didn't think was conformed.

Thanks

John

caress · February 17, 2010, 12:56:07 PM

just hit up the "other" forum. which actually doesn't need to be the "other" forum now that these schems are available here...

(even though google was always just a mouse click away...)

John Lyons · February 17, 2010, 02:24:26 PM

Yeah, I'm there as well. Just didn't get the info I guess.

News:

wooly mammoth build