Baja B K Butler Tube Driver

stefanogueli92 · Post by **stefanogueli92** » 05 Jan 2020, 16:05

Hello again
I'm really sorry to bother you again but i have a great problem with my tube driver... At full gain or almost full i can't play my guitar with neck pick up because the sound is very bad.. undefined... I try to set every possible type of eq combination... So maybe there's something wrong with my guitar or that's a common problem... The only thing i didn't yet is the wiring to chassis with 100nf and 100r... Do you think that maybe that's the problem??? I'm waiting for your kind answer.. THANK YOU

stefanogueli92 · Post by **stefanogueli92** » 25 Jan 2020, 17:46

BETELGEUSE58_ · Post by **BETELGEUSE58_** » 15 Feb 2021, 05:23

This is a ridiculous question, I know....

What are the units of measure on the pcb? Sub-divisions of ten suggest metric. But im not sure its 18x37.4cm. Or 18x37.4mm. Or 18x37.4inches. Or 1.8x3.74inches.

In my opinion it as absolutely worth updating the images to include units.

I've started on this pedal many times, gone through the above and deduced an answer. Lost track where I was and starting over again and I'm just so done doing this every time.

Units please. Without a unit a number means nothing.

plush · Post by **plush** » 15 Feb 2021, 09:20

BETELGEUSE58_ wrote: ↑15 Feb 2021, 05:23 This is a ridiculous question, I know....

What are the units of measure on the pcb? Sub-divisions of ten suggest metric. But im not sure its 18x37.4cm. Or 18x37.4mm. Or 18x37.4inches. Or 1.8x3.74inches.

In my opinion it as absolutely worth updating the images to include units.

I've started on this pedal many times, gone through the above and deduced an answer. Lost track where I was and starting over again and I'm just so done doing this every time.

Units please. Without a unit a number means nothing.

Based on pin spacing, it's inches.
/10 subdivision is for mils
1 inch = 1000 mills
100 mil = 2.54mm = typical dip spacing for ICs and resistors

deltafred · Post by **deltafred** » 15 Feb 2021, 12:49

This reminds me of a story a friend of mine told me.

Here in the UK we were supposed to use metric from 1971 onwards but feet and inches were and still are used where they are more convenient (Through hole IC pins are 0.1 inch pitch so using metric makes no sense at all).

In the 1980s my friend worked in IT and her boss asked her to design a trolley to wheel around the computer room to put backup tapes on.

She designed it in using centimetres as that was what she had been taught at school however the preferred engineering units are mm or metres. When the engineering company got her drawing she had not specified the units and as mm would make it a toy and metres were definitely out they assumed she meant inches.

When the trolley arrived they couldn't get it through the door as it was 2.54 times larger than it should have been. This caused great hilarity and she was presented with a photo of 6 people sitting on the bottom shelf.

She says she still got her annual bonus because it gave her boss the biggest laugh he'd had all year.

plush · Post by **plush** » 15 Feb 2021, 14:06

Imperial system
Making your boss laugh since 1826.

Ali7887 · Post by **Ali7887** » 01 Jul 2023, 18:37

Hi friends i've Build tube driver from verified veroboard, but is too noisy, is there any solutions? I useed shield wires, and plastic box with put alumium cover shield outside of it and tested with 12ax7 and also 12au7 tube , with 12V AC external adapter,
but still have a huge noise.please help me

bajaman · Post by **bajaman** » 02 Jul 2023, 11:03

just put in in a metal enclosure and connect the enclosure to the circuit ground !

Ali7887 · Post by **Ali7887** » 02 Jul 2023, 11:10

Thanks,
One question,did you design this veroboard?

bajaman · Post by **bajaman** » 03 Jul 2023, 03:36

as it says - Harald Sabro

Not Me

andregarcia57 · Post by **andregarcia57** » 04 Jul 2023, 13:29

hello everyone, I decided to design and make gerber available, any doubt or change, I am available
hugs
André

https://www.pcbway.com/project/sharepro ... 62fc2.html

carseomighty · Post by **carseomighty** » 14 Jul 2023, 03:43

Thanks for this. I ordered 10 boards from pcbway. They look great.. amazing how long this thread has been around.

I was a tech in a previous life, just got back into designing and building gear.

Baja B K Butler Tube Driver [documentation]