Trombetta - Bone Machine

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
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fuzzhuggerlover
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Post by fuzzhuggerlover »

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MiniBone.sch
(95.13 KiB) Downloaded 485 times

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fuzzhuggerlover
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Post by fuzzhuggerlover »

Could be wrong not a pro.

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fuzzbunny
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Post 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?

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p.eat
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Post by p.eat »

.sch is a schematic file for CADsoft EAGLE

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fuzzbunny
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Post 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

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fuzzhuggerlover
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Post by fuzzhuggerlover »

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Screen Shot 2016-08-05 at 11.42.45 AM.png

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Saruman
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Post by Saruman »

:applause: :applause: :applause:

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Intripped
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Post by Intripped »

...mamma mia! :shock:

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Post 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.

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Saruman
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Post by Saruman »

schem dont work.

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triplesevener
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Post 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).

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Post by fuzzhuggerlover »

Dont remember if there were underboard components or not. You can compare it to the schem.

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Post 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.
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mark up.jpg

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Post by Intripped »

i think that the question marked resistor is 18k, and the other one seems to be 15k for the LED

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Post 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.

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Post by fuzzbunny »

2N2097A is PNP germanium. Looks like there is a handwritten 87 or 187 on it's top. Probably hfe.

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Post 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.
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mark up.jpg

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Post 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.

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Post 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.

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Post 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.
Last edited by fuzzbunny on 12 Aug 2016, 17:14, edited 1 time in total.

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