Mr. Black Boost Tiger  [traced]

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Mr. Black Boost Tiger  [traced]

Postby mmolteratx » 20 Mar 2013, 06:10

Traced from prototype #1/9. Jack has said that there are a few changes with the production model, but they're mostly with the PCB itself.

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Re: Mr. Black Boost Tiger

Postby Jack Deville » 20 Mar 2013, 07:28

:applause:
Pretty close.
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Re: Mr. Black Boost Tiger

Postby Ice-9 » 20 Mar 2013, 17:04

After reading Jack's excellent article on True Bypass I am surprised to see a pull down resistor in there as well as the current limiting resistor. For any one interested in the article its over on his Mr Black site under the "Straight Jive" menu. A great read for anyone that has not yet read it. :applause:
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?
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Re: Mr. Black Boost Tiger

Postby Jack Deville » 20 Mar 2013, 17:17

Maybe you should think about why it might be there.
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Re: Mr. Black Boost Tiger

Postby D-Day » 20 Mar 2013, 17:55

Played this one at the guitar show down in Kent. Fantastic boost!
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Re: Mr. Black Boost Tiger

Postby marshmellow » 20 Mar 2013, 18:02

Ole Jack sure has come a long way since then :roll:.
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Re: Mr. Black Boost Tiger

Postby Jack Deville » 20 Mar 2013, 18:10

Boost Tiger is a fantastic clean booster / pre-amp.
Currently in production: Rev B1.
Now you have a clean, complete schematic. Build one for yourself and rock.
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Re: Mr. Black Boost Tiger

Postby Jack Deville » 20 Mar 2013, 18:13

marshmellow wrote:Ole Jack sure has come a long way since then :roll:.

Quite a different circuit, although kudos! There are opamps in both.
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Re: Mr. Black Boost Tiger

Postby D-Day » 20 Mar 2013, 18:13

Hay Jack! What's with that Devo hat lookin 123 gnd thingy?
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Re: Mr. Black Boost Tiger

Postby Jack Deville » 20 Mar 2013, 18:16

D-Day wrote:Hay Jack! What's with that Devo hat lookin 123 gnd thingy?

My tribute to a great band.
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Re: Mr. Black Boost Tiger

Postby D-Day » 20 Mar 2013, 18:18

:block:
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Re: Mr. Black Boost Tiger

Postby mmolteratx » 20 Mar 2013, 18:26

D-Day wrote:Hay Jack! What's with that Devo hat lookin 123 gnd thingy?


It's the little grounding tab. Love those things. Keystone 629, IIRC. Got a bunch of them to use in my pedals.
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Re: Mr. Black Boost Tiger

Postby marshmellow » 20 Mar 2013, 18:29

Jack Deville wrote:
marshmellow wrote:Ole Jack sure has come a long way since then :roll:.

Quite a different circuit, although kudos! There are opamps in both.


I see, you now vary the feedback resistor, those three years of research have been well spent. And you finally did take my advice regarding the bias buffering, my hat's off to you :lol:. Or does the ingenuity lie in the split resistor arrangement on the input and output?
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Re: Mr. Black Boost Tiger

Postby Jack Deville » 20 Mar 2013, 18:34

You got a bone to pick? Go buy a roast chicken.
Upset for some reason? Perhaps you should take some time to reflect on your life. I don't have time for you.
I'm a "professional."
Buy my products and make me rich.

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Re: Mr. Black Boost Tiger

Postby Ice-9 » 20 Mar 2013, 18:39

Jack Deville wrote:Maybe you should think about why it might be there.


I can't see how the 3PDT is wired up in the picture so maybe you not using that bypass system on this pedal ? or switch bounce is still causing a little pop without s pulldown resistor there ? I need enlightened. :popcorn:

Edited after noticing the post above , I just seen you posted the official schem with the switch in so it is that input grounding type series current resistor bypass typo thing. Thanks for showing us all that.

Extra - I managed to get a tunnelworm imported from USA last week. sounds great.
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?
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Re: Mr. Black Boost Tiger

Postby skywise » 20 Mar 2013, 21:17

Jack Deville wrote:Maybe you should think about why it might be there.

To keep input impedance lower than the max possible from the op amp?
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Re: Mr. Black Boost Tiger

Postby Ice-9 » 20 Mar 2013, 22:04

skywise wrote:
Jack Deville wrote:Maybe you should think about why it might be there.

To keep input impedance lower than the max possible from the op amp?


I did consider that it was about input impedance, but I would have thought the 470K resistor going to VBias does that job anyway.
It's fairly straight forward, if you want to start it , press start. You can work out the rest of the controls for yourself !

No silicon heaven ? preposterous ! Where would all the calculators go ?
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Re: Mr. Black Boost Tiger

Postby marshmellow » 21 Mar 2013, 02:57

Jack Deville wrote:You got a bone to pick? Go buy a roast chicken.
Upset for some reason? Perhaps you should take some time to reflect on your life. I don't have time for you.


Yeah, maybe better spend your time studying a book on electronics every once in a while instead, because what I had to read on your tech blog (or whatever you want to call it) today is rather alarming. For naming yourself the "effects wizard" you seem to be remarkably ignorant concerning some basic principles. Like the distinction between current and voltage, for instance. You use the terms practically synonymously and throw them around like there is no tomorrow. And so on...
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Re: Mr. Black Boost Tiger

Postby bufferz » 04 Apr 2013, 15:01

Can someone help explain the reason for the 1k resistors at the input and output, just seems unique to me and would like to learn.
Also, I do not have any 56k resistors, can someone explain what they are doing in this circuit, are they just voltage dividers?

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Re: Mr. Black Boost Tiger

Postby jymaze » 04 Apr 2013, 20:02

Output 1k resistor: limit current in case of short-cut at the output and lowers pop sound

Input 1k resistor: lowers pop-sound

You can use 47k or 68k for the voltage divider (you wrote 56k resistors, but you meant 51k, right?)
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