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Trombetta - Bone Machine

Posted: 04 Aug 2016, 23:19
by fuzzhuggerlover
Image

Re: Trombetta Bone Machine

Posted: 04 Aug 2016, 23:24
by fuzzhuggerlover
Could be wrong not a pro.

Re: Trombetta Bone Machine

Posted: 05 Aug 2016, 06:19
by fuzzbunny
Goop fail! :mrgreen:

Just kidding. Surprised by the overall build quality though.

Nevertheless, he builds good sounding pedals and people wait in line for them. I read recently he was going to stop taking orders and take a break/make a life change after he fulfills his list of pre-orders.

How does one view a .sch file?

Re: Trombetta Bone Machine

Posted: 05 Aug 2016, 07:48
by p.eat
.sch is a schematic file for CADsoft EAGLE

Re: Trombetta Bone Machine

Posted: 05 Aug 2016, 16:03
by fuzzbunny
p.eat wrote:.sch is a schematic file for CADsoft EAGLE
Thanks in advance to anyone who can convert it to a jpg, gif or png. :thumbsup

Re: Trombetta Bone Machine

Posted: 05 Aug 2016, 16:47
by fuzzhuggerlover
Screenshot

Re: Trombetta Bone Machine

Posted: 08 Aug 2016, 08:34
by Saruman
:applause: :applause: :applause:

Re: Trombetta Bone Machine

Posted: 08 Aug 2016, 09:22
by Intripped
...mamma mia! :shock:

Re: Trombetta Bone Machine

Posted: 08 Aug 2016, 19:05
by rabbitgonemad
Thanks for the pic and schematic!
When looking into mine I found that it has components underneath the perf board. Does yours too and are they included in the schematic? Please mind that mine is a 2-in-1 and it might be build like that to save room inside the enclosure.

Re: Trombetta Bone Machine

Posted: 09 Aug 2016, 07:10
by Saruman
schem dont work.

Image

Re: Trombetta Bone Machine

Posted: 09 Aug 2016, 10:11
by triplesevener
This circuit is definitely Jordan Bosstone based, as is most of Paul Trombetta's work. It looks awful similar to the Rockett WTF (which he also designed).

Re: Trombetta Bone Machine

Posted: 10 Aug 2016, 06:40
by fuzzhuggerlover
Dont remember if there were underboard components or not. You can compare it to the schem.

Re: Trombetta Bone Machine

Posted: 11 Aug 2016, 20:59
by Ripdivot
I have counted 7 resistors in the photo and only six on the schematic. I marked up the photo to try and account for the missing resistor.

Re: Trombetta Bone Machine

Posted: 11 Aug 2016, 21:40
by Intripped
i think that the question marked resistor is 18k, and the other one seems to be 15k for the LED

Re: Trombetta Bone Machine

Posted: 11 Aug 2016, 23:16
by fuzzbunny
Intripped wrote:i think that the question marked resistor is 18k, and the other one seems to be 15k for the LED
For sure, the '7th resistor' goes to the led.

Re: Trombetta Bone Machine

Posted: 11 Aug 2016, 23:20
by fuzzbunny
2N2097A is PNP germanium. Looks like there is a handwritten 87 or 187 on it's top. Probably hfe.

Re: Trombetta Bone Machine

Posted: 12 Aug 2016, 15:53
by Ripdivot
fuzzbunny wrote:
Intripped wrote:i think that the question marked resistor is 18k, and the other one seems to be 15k for the LED
For sure, the '7th resistor' goes to the led.
Ah yes, I see that now. I have corrected the image.

Re: Trombetta Bone Machine

Posted: 12 Aug 2016, 16:04
by Ripdivot
fuzzbunny wrote:2N2097A is PNP germanium. Looks like there is a handwritten 87 or 187 on it's top. Probably hfe.
My Google search shows it being NPN silicon which jives with the schematic.

Re: Trombetta Bone Machine

Posted: 12 Aug 2016, 16:11
by Ripdivot
Ripdivot wrote:
fuzzbunny wrote:2N2097A is PNP germanium. Looks like there is a handwritten 87 or 187 on it's top. Probably hfe.
My Google search shows it being NPN silicon which jives with the schematic.
Now I'm a little confused, as I search some more it is showing it to be germanium pnp as well.

Re: Trombetta Bone Machine

Posted: 12 Aug 2016, 16:42
by fuzzbunny
Ripdivot wrote:
Ripdivot wrote:
fuzzbunny wrote:2N2097A is PNP germanium. Looks like there is a handwritten 87 or 187 on it's top. Probably hfe.
My Google search shows it being NPN silicon which jives with the schematic.
Now I'm a little confused, as I search some more it is showing it to be germanium pnp as well.

I think in a way we are both correct. :mrgreen:

There are different versions of Bosstones. Some with PNP in the Q2 position and others with NPN. Like you, I find different results for 2N2097 and 2N2097A.