Baja B K Butler Tube Driver

DrNomis · Post by **DrNomis** » 24 Jul 2010, 15:50

No worries,let me know how your build goes,my build is still going strong and still very quiet,no mans hum....

DrNomis · Post by **DrNomis** » 24 Jul 2010, 15:52

I'll try and upload a diagram of my redesigned stripboard layout that I used to fix the mains hum problem....stay tuned....

stratogavster · Post by **stratogavster** » 25 Jul 2010, 18:58

Can anybody verify the SINGLE LAYER PCB version that lutor posted?

Would appreciate any input!! making these things on double layers in a pain in the ass

Hope somebody can help!!

stratogavster · Post by **stratogavster** » 25 Jul 2010, 21:16

whoops!! add to my post....anybody verify any of the single layer pcbs on here for the BK Butler tube driver?

Thanks all!!

supergigi · Post by **supergigi** » 27 Jul 2010, 09:59

Hi at all,

has somebody the Vref on tube pins and IC pins ?

Thanks in adavance.

DrNomis · Post by **DrNomis** » 27 Jul 2010, 10:48

For the IC,you should see the following voltages on the pins:

Pin 1: 0V
Pin 2: 0V
Pin 3: 0V
Pin 4: -14V

Pin 5: 0V
Pin 6: 0V
Pin 7: 0V
Pin 8: +14V

Note,I have 68K resistors on the anodes of the valve in my pedal,you might have slightly different voltages,anyway on the valve pins you should see these voltages(as per my tube driver 4 knob build):

Pin 1:6.35V
Pin 2:-12.93V
Pin 3:-13V
Pin 4: 0V
Pin 5: 12.6V AC
Pin 6: 5.96V
Pin 7:-13V
Pin 8:-13V

Note 2:You may have different voltages on pins 4 and 5.

DrNomis · Post by **DrNomis** » 27 Jul 2010, 10:52

You might also get different voltages on pins 1 and 6 depending on what valve you're using and whether it is new,or old.....

DrNomis · Post by **DrNomis** » 27 Aug 2010, 06:45

To all those wanting a good Vero/Stripboard layout for the Baja BK Butler Tube Driver,and Real Tube Driver,please stay tuned,a friend of mine gave me a 3-In-1 Printer/Scanner/Copier,I'll get it up and running with my computer and will draw up the layout and scan it into my computer so I can convert it to a downloadable PDF document,I'll get it all sorted out ASAP....

Cymbal Monkey · Post by **Cymbal Monkey** » 06 Sep 2010, 14:55

Yes this is an old thread but THANK YOU BAJA!

Cymbal Monkey · Post by **Cymbal Monkey** » 07 Sep 2010, 01:56

I made a proposed bill of materials, there are some problems like the bias pot, but I think it's okay. Lemmy know if you have suggestions or if you find things that I flat out failed at. Thanks!

snafuX · Post by **snafuX** » 03 Oct 2010, 13:21

hey guyz just finished i gotta a question!!
it's possible to power it up with a 500ma transformer or is it too low???
thank a lot

bajaman · Post by **bajaman** » 03 Oct 2010, 19:29

500mA should work okay - give it a try

cheers
bajaman

snafuX · Post by **snafuX** » 03 Oct 2010, 19:47

ok but i got a problem with noise
i think it is ac noise
can you tell me a good way to ground it a simple grounding diagram
thank you very much

DrNomis · Post by **DrNomis** » 03 Oct 2010, 19:56

Snafux,

If you wire the heater connections for the 12AX7 valve to pins 4 and 5,it will need 12.6V AC at 150mA,so to find out how much total current needed to supply the pedal with,just add 150mA to whatever the rest of the circuit draws,so with your 12V AC @ 500mA plugpack,150mA of it will be supplying the valve heater,leaving 350mA for the rest of the circuit,which I think should be fine,you may need to use a 10 Ohm/5 Watt resistor in place of the 33 Ohm/5 Watt resistor that's going to the valve heater,changing this resistor from 33 Ohms to 10 Ohms brings the heater voltage up to where it should be....

DrNomis · Post by **DrNomis** » 03 Oct 2010, 19:59

Snafux,

Is your noise problem a mains hum noise that gets louder when you turn up the drive control?.....

Is it possible to post a pic of your build?....

snafuX · Post by **snafuX** » 03 Oct 2010, 20:22

yes i think it is, and it gets louder when you turn up the gain pot
unfortunately i can't take pictures now
i've used the bk butler rev 2 posted by lutor
can you explain me how to wire the ground in the box jacks have to be isolated from the box? eccc....
sorry but it is my first tube project

snafuX · Post by **snafuX** » 03 Oct 2010, 21:19

wo wo wo what 5w resistor to what????
didn't notice any 5w resistor iin the layout !!
where have i to place this resistor?

snafuX · Post by **snafuX** » 03 Oct 2010, 21:21

....heater?? i'm using a noval ceramic tube socket...

bajaman · Post by **bajaman** » 04 Oct 2010, 00:13

someone is getting confused with the Baja Real Tube Drive project - different project

cheers
bajaman

snafuX · Post by **snafuX** » 04 Oct 2010, 08:43

anyone out there can help me with the grounding problem, i really need this effect, so please....

Baja B K Butler Tube Driver [documentation]