BAJA Peach Fuzz mini size

roseblood11 · Post by **roseblood11** » 25 Nov 2011, 22:40

the unused half of the tlc2262 is not connected at all...
output and inverting input (pin 6+7) should be connected. non-iverting input should be grounded (or connect with Ub/2)

LaceSensor · Post by **LaceSensor** » 26 Nov 2011, 00:28

Some nice gutshots here confirm the IC's

https://filisteudorock.wordpress.com/20 ... each-fuzz/

monkeyxx · Post by **monkeyxx** » 26 Nov 2011, 03:41

roseblood11 wrote:the unused half of the tlc2262 is not connected at all...
output and inverting input (pin 6+7) should be connected. non-iverting input should be grounded (or connect with Ub/2)

interesting is this an error in the layout(s) then? does this affect the function and sound of the circuit?

I'd be interested in correcting the schematic and coming up with a more accurate layout if so

monkeyxx · Post by **monkeyxx** » 26 Nov 2011, 03:43

LaceSensor wrote:Some nice gutshots here confirm the IC's

https://filisteudorock.wordpress.com/20 ... each-fuzz/

cool! thanks

greenskull · Post by **greenskull** » 26 Nov 2011, 04:16

monkeyxx wrote:
roseblood11 wrote:the unused half of the tlc2262 is not connected at all...
output and inverting input (pin 6+7) should be connected. non-iverting input should be grounded (or connect with Ub/2)
interesting is this an error in the layout(s) then? does this affect the function and sound of the circuit?

I'd be interested in correcting the schematic and coming up with a more accurate layout if so

I'm getting ready to build this one and have been following the recent posts. According to the newly posted link of gut shot of trace side, the only thing connected to the right side of the 1st op amp is pin 8 to ground. The layout looks correct in that aspect. Whether that's a technically correct procedure or not is another matter, I guess.

monkeyxx · Post by **monkeyxx** » 26 Nov 2011, 05:19

here is the schematic again with the recommended corrections

I'm starting to like this thing quite a bit, it's got a big powerful low end, which is something I'm gravitating to more and more these days. I'll probably do a layout spaced for big caps at some point in the future

monkeyxx · Post by **monkeyxx** » 28 Nov 2011, 21:44

here's my build...

the cool accidental trick was, polyurethane which is a bit amber tinted, over ballet slipper pink, makes a good peachy color tone

I'm not sure if I love this thing or not, the character is very idiosyncratic and not "amp-like", it's kind of like a Wooly Mammoth in that way, but that can also be viewed as a benefit

bajaman · Post by **bajaman** » 12 Oct 2017, 02:31

Time to revive this old project thread

I recently revisited this fuzz pedal and designed a completely new layout for it - still using the same basic circuit though. The board is now double sided with a ground plane and screen printing etc. all the components are mounted on one side of the board and it can function perfectly without an enclosure, although for practical reasons an enclosure will still be needed for gigging

Here is a brief photo essay showing the boards and construction in a Hammond style 1590B enclosure etc.
You will notice that there is no provision for this board layout to run from a battery - who uses battery anymore these days ? I used a TLC2272 instead of the TLC2262 because i was out of stock of that op amp, but i do not think it has made much difference to the sound - possibly a bit tighter sounding because the TLC2272 is a higher current draw version rail to rail cmos op amp.

I have this same pcb available for anyone who wants to build one - also sounds great for bass guitar and synth etc. - PM me for details

Still one of the fattest fuzz boxes out there

cheers
bajaman

Post by **modman** » 04 Jan 2018, 23:12

Updated the original files in the first post

BAJA Peach Fuzz mini size [documentation]