Tytewadd Questions...

[petemoore]

I perfed up a Tytewadd, [circuit snippets] and have been subjecting it to the usual battery of tests.
 I measure 100k between Q1 collectorr and Q2 Source for example.
 Battery is 12.52v
 Q2D12.52v
 G 4.49v
 S  1.30v
Q2C1.30v
   B .82V
   E  0  
 I tired a Jfet and some 2n5952's, it's fuzzing, but it's also gating.
 I'm figuring the Jfet is supposed to bias the NPN, but for some reason on this board seems not to do that.  
 The 1n914 diodes read like Si either way when meter is applied across them.

[MartyMart]

Pete, are you running it at 12v for "headroom" ? thats a powerful battery!
Mine is on a standard 9v and has no "splatty" artifacts, so could the voltage increase just have sent your bias off a wee bit ?
Also ( I know you will know this  )  pinout ? . . . . ( sorry its obvious )
Can't get to mine right now, but I can PM you some voltage readings later
if that helps ?

Marty.

[petemoore]

Pete, are you running it at 12v for "headroom" ? thats a powerful battery!
Mine is on a standard 9v and has no "splatty" artifacts, so could the voltage increase just have sent your bias off a wee bit ?
Also ( I know you will know this  )  pinout ? . . . . ( sorry its obvious )
Can't get to mine right now, but I can PM you some voltage readings later
if that helps ?

Marty.

Actually I'm sure the Jfet must be setting bias, that and the 100k, I dropped the 100k to about half, but didn't notice much difference.
 I'ts a pretty simple wiring, and after looking it over and testing...there are only a couple resistors on the thing !!!
 It's not the usual bias setup, so I'm having trouble figureing out why the collector [that's output] is sitting so low at 1.30v, at this bias point the transistor has like no headroom...even so the output is boosted and fuzzy, and gating alot

[petemoore]

OK, for all who doubt, there were two mistakes at R1
 I had a 330k at Q1 base to ground.
 Schematic shows a 220k before the input cap...
 Tytewadd is a great Fuzz...'miserly' or not...big Fuzz sound !!!

[MartyMart]

OK, for all who doubt, there were two mistakes at R1
 I had a 330k at Q1 base to ground.
 Schematic shows a 220k before the input cap...
 Tytewadd is a great Fuzz...'miserly' or not...big Fuzz sound !!!

Pete, I'm shocked ! 330 rather than 220 ......... or perhaps you were
building fom memory  ?    :wink:

BTW Its a fabulous little circuit  

Marty.

[jmusser]

I was just curious if the Tytewadd is dead quite when you're not playing it, like all the rest of Tim's stuff I've built? Pete Moore used the wrong value resistor! I thought I was the only one that done that stuff. I built the Jordon Boss Tone Sunday night, and it was deader than a door nail when I tried it. After I run the schematic again last night, I found that I had wire d everything correctly. Then, after checking all the values, I reread the note that I had used for a guide to two of the component values, It had actually said "Do Not" use these values! :roll: Hopefully when I change them out tomorrow evening, I'll be in business. 50uf instead of 50pf, and 150 ohm instead of 150K still beats your value, so I'm still better than you at screwing up! Ha! :shock:

[petemoore]

Yes I did !!!  
 Tytewadd makes a Great Fuzz Tone. May have looked too simple to be this good. I like the simple Fuzzes tho...they seem to work real good for me and this one is certainly no exception.
 If I was paying attention at all, I could say it was very easy...must be.
 I put a 1n across the diodes, took too much high end off, ended up with just an added 1n  Q1B to ground...takes a little of the Zizz off. Lots of high end fuzziness I'm hearing I like it better with the filter cap there.
 I haven't boxed it up, but if low current has anything to do with low noise, this ones a prime candidate for quiet operation. Seems PDQuiet, the big amp tells me more about any little noises.

[MartyMart]

Yes I did !!!  
 Tytewadd makes a Great Fuzz Tone. May have looked too simple to be this good. I like the simple Fuzzes tho...they seem to work real good for me and this one is certainly no exception.
 If I was paying attention at all, I could say it was very easy...must be.
 I put a 1n across the diodes, took too much high end off, ended up with just an added 1n  Q1B to ground...takes a little of the Zizz off. Lots of high end fuzziness I'm hearing I like it better with the filter cap there.
 I haven't boxed it up, but if low current has anything to do with low noise, this ones a prime candidate for quiet operation. Seems PDQuiet, the big amp tells me more about any little noises.

Pete, BTW I made the "veroboard" version and there was enough room for a 100uf cap to ground on the 9v supply rail and also a 1N4001 reverse protection diode ( I like to do this on every build now - good practice? )
I may try your 1n cap from Q1 base to ground ( if thats OK ? ) as mine is
a "touch" fizzy -- great sound though and quiet as a mouse  
Nice one Tim !

Marty.

[petemoore]

Yeah, I wanted to have the cap across the diodes, but 1n is the smallest I could find easily, and that made it go from plenty o' Sizzle to too dark...
 SO...I soldered a ~2'' wire on the 1n, other end to ground...tried here 'n there with the SP rolloff...it ended up where I figured it would, in that extra socket Lug I always put at the input cap socket/Q1base for just such purposes...
 Smaller like, say 47-470pf across the diodes would be something I'd try.
 But I put the 1n 't ground there, and it's really nice high gain Cct. like that...
 Alot of high end content, maybe even have the amount adjustable or selectable...
 The circuit Rocks, Heavy Fuzz/Dist. Great Clipping sound. P.D.EZ / small board.

[Dragonfly]

Pete, Marty ..

have you guys built Tims "Punch in the Face" fuzz yet ? I did a vero layout for it, but havent built it yet...i was curious as to the sound...

thanks,
 Andy

[jmusser]

I have built the Punch in the Face. I'll have to get it back out and play it to remember what it sounded like. I may have written a review on it too, I'll just have to look around. I'll let you know. I need to get back to the Boss Tone here in a little bit and get the components switched out. One that has not been mentioned much on here, is his "Jinx" circuit. That thing is a beast! Mine does the Bronx Cheer aftertaste thing, but X10. I know without playing it, that I would put it head and shoulders above the Punch in the Face. That circuit is a grinder right there. Of course, this is all to taste, and it might not be yours. It's in the top 3 that I've built!