http://users.bigpond.net.au/styrowfoam/punkifier.html
The link above takes you to two pictures of the Punkifier's PCB. The first pic is a closeup of the traces with the values and components added. The second is just the top of the board. The trace picture has been reversed so they're both orientated the same way.
Can anyone tell what's going on with those clipping diodes? The whole top right corner is confusing the heck outta me. I'm trying to draw a schem for it (considering there's none on the web) to see if there would be any good modifications for it -but I'm finding it tough going. It's sending me cuckoo!
Those little mustard coloured caps (C6 ect) just have 473 on 'em...which is 0.47uF isn't it?
0.47uF = 470 nF = 470 000 pF
so it would seem that 0.47uF = 474
cheers,
george
Yup, 473 is 0.047uf 474 is 0.47uf
Marty.
Hello! Noobz like myself have this chart always in front of them, along with resistor color codes :-)
http://www.em.avnet.com/ctf_shared/pgw/df2df2usa/Ceramic%20Cap%20Codes.pdf
Cheers,
Marek
lol...oooops :oops: I'll have to fix those.
I still can't figure out what's going on with the pots and clipping diodes. It kinda looks like the pots are blending between two different pairs of diodes.
brad,
that's what it looks like 2 me.
2 pair of diodes 2 gnd rail;
with 100K pot in parallel and "picking off" a Voltage level.
very beautiful phantom pic with text!!
isnt there a Punkifier schemo somewhere out there??
stayreveng
tone
Thanks toneman.
There's no schematic for the Punkifier on the internet, but it looks like it would be pretty simple without all the switching crap. I'm just not so great at telling the difference between the core effect and the components that are just part of the switching!
From the looks of it, the signal goes through a tone section (third pot from left)...
...then to the clippers and gain pot (far right)...
...then to another tone section (2nd pot from left)...
...then to the volume knob on the far left.
There are Harmony Central reviews that claim the 4007 is used for fuzz (clearly not so!!!) and that the knobs blend fuzz and overdrive. Honestly? I don't know...but it's giving me a headache! :D It's actually a cool sounding pedal. The distortion has a "broken pedal" sound.
If anyone wants to make a schematic, knock yourself out! It's a bit over my head...so I'll just poke around repacing the clippers and opamps ect.
I knocked myself out. Next time I'm gonna wait till after i'm done drawing, unconsciousness is too much of a setback.
Do you have the transistor marking that aren't on the board, with the pinout possibly? Some connections make it obvious, but I'd like to be sure.
I'll print out the 4007 datasheet, but I doubt i'll include the switching in my schematic. Hmm a schematic with the DOD switching might make that simpler tho...I'll check.
Ciao.
Edit: ahah, whaddya know, mark hammer's got an article at his site about the DOD switching!
The Jfets are J201s and the bipolars are 2n5088s (which just have the emitters marked).
The switching looks like it's identical to what's on the DOD Grunge schematic:
http://www.diystompboxes.com/pedals/dodfx69.jpg
The 4007 is a MC14007UBCP and the opamps are KA4558s.
sec
sec?
googling 4 "punkifier",
i found a comment @ HarmonyCentral bout the Punkifier.
Said it was a combination of a *?* disoortion & a fet overdrive.
[i forget what fuzz was refered to--diodes 2 gnd type(?)]
The diodes 2 gnd will get the "grunge" sound.
The 4007 would get the "overdrive" sound.
Most comments were how bad DOD *mixed* the 2.
stayfuzzed
tone
Ok, more than a sec :p
I was ready to post the schem, but then I thought I should make sure the 4007 isn't used for producing an overtone like that guy,s review on harmony central suggests.
As it stands, the circuit just blends a two stage tranny fuzz circuit with a one stage opamp distortion circuit.
I need to check the switch wiring to see what is or isn't used by it from the 4007 chip.
One more sec ;)
EDIT: Well, I've checked and unless you can use the 4007 for both switching and producing a square wave at the same time, it's just for switching.
EDIT: schem is here:
http://www.freewebs.com/fkstilt/DODpunk.htm
remarkable efforts Strung!!
Capacitors marked with 121p are 120p, the 5n6 cap is a 56n Film-capacitor, the 0,47µ caps (input and in parallel fuzz diodes) seem to be in reality 47n = 0.047µ or 473 ceramic-type, 500k Poti is marked with "Slam" and seems to be a negativ logarithmic, The 100k mix between Distortion and Fuzz is marked "Punk", Tone Control is marked "Spikes", Volume pot i can´t read.
The 0,22µ Elko after the input transistor is not necessary without FET-switching.
analogguru
volume pot is called "menace" from HarmonyCentral review.
T
Quote from: strungoutOk, more than a sec :p
I was ready to post the schem, but then I thought I should make sure the 4007 isn't used for producing an overtone like that guy,s review on harmony central suggests.
As it stands, the circuit just blends a two stage tranny fuzz circuit with a one stage opamp distortion circuit.
I need to check the switch wiring to see what is or isn't used by it from the 4007 chip.
One more sec ;)
EDIT: Well, I've checked and unless you can use the 4007 for both switching and producing a square wave at the same time, it's just for switching.
Here's the untested schematic:
GREAT JOB!!! :o
No
wonder I was getting so mixed up -there's a transistor fuzz in there too!! I couldn't understand why the signal path branched off to those 2n5088s in parallel with the opamp section. I thought those transistors were part of the switching! You just saved my sanity lol.
There's some great modding potential in this pedal. It will be interesting to hear how different transistors sound in the fuzz section!
Thanks again to strungout for drawing the schematic!!! :D
*EDIT*
The control layout on this thing is unconventional:
From left to right on top of the pedal, the knobs are labelled:
"Punk" = fuzz/overdrive blend
"Slam" = Distortion gain
"Spikes" = tone
"Menace" = volume
The solder side picture I posted was flipped to match the top view, but in reality, the volume is on the far right looking from the outside of the pedal. How confusing is that??! The distortion gain is marked "500K C"
btw, that input cap definitely is a 0.047uF cap.
There's also plenty of room in the enclosure for an extra pot or a few switches. Perhaps a warp control or even a gain pot for the fuzz could be added.
Schematic now at my site cause digikitten is being wierd with uploads/deletes...
http://www.freewebs.com/fkstilt/DODpunk.htm
Thnx!
I made the changes to the schematic, and it's now verified (built it on my breadboard). I thought it didn't sound so great, but I'll go make the changes and see what difference that does.
Ciao.
I think the point of the pedal is to sound crappy!
The distortion section is pretty much a DOD 250...so an interesting mod might be to mod it to "vintage Grey" specs. If you wanted to get really crazy, you could split the dual opamp socket into two single opamp sockets on a small board inside the enclosure and use a 741 IC for true DOD 250 tone. Adding a switch to select either germs or LEDs for clipping diodes wouldn't go astray either. A switch could even be added to connect point "A" directly to the output jack and simultaneously break the fuzz output and send the open "Punk" pot lug to ground. Instant DOD 250 output!
I've already made the first mod: a Pink indicator LED. Now it's the DOD Pinkifier. :o
I think you gave it the wrong name, it should be:
PINKLEFIRE
:D
analogguru
Yeah, punk is supposed to sound like sh*t, but it's been about 30 years, things change and even crap sounds like better crap now :wink: The fuzz feel too saturated and sounds farty to me.
My gutter rat I find better 8)