A different MosFET Booster

Started by markm, March 25, 2007, 12:02:04 PM

Previous topic - Next topic

markm

Hey Y'All,
Got some new layouts up in my gallery, please give a look!

http://aronnelson.com/gallery/album15

I finally got around to verfiying the layout for the "HomeGrown Single-Mos" booster and I must say it is interesting.
Very similar to other Mosfet boosters but, it does seem to have a slightly different voice of it's own as well.
It can push the preamp stage of my Twin into some nice overdrive plus, it has a bit of extra sheen on the top end.
I have received a few PM's about this circuit so to all who have been asking, it is verified so....Happy Building!!

Mosfet Booster here;http://aronnelson.com/gallery/album76/Homegrown_Single_Mos_LAYOUT

More to come fellas....stay tuned!  :icon_wink:

alderbody

Quote from: markm on March 25, 2007, 12:02:04 PM
It can push the preamp stage of my Twin into some nice overdrive

Is it a Twin reverb or a tweed Twin?

If it can cause a twin reverb to OD, then i'm really interested...


Great job, anyway!    ;)


markm

Quote from: alderbody on March 26, 2007, 03:18:12 AM
Quote from: markm on March 25, 2007, 12:02:04 PM
It can push the preamp stage of my Twin into some nice overdrive

Is it a Twin reverb or a tweed Twin?

If it can cause a twin reverb to OD, then i'm really interested...

My Twin is a BF.
It's the preamp that's going into OD, not the power section!  :icon_neutral:
Thanx for the kudos!

alderbody

Quote from: markm on March 26, 2007, 07:20:45 AM
It's the preamp that's going into OD, not the power section!  :icon_neutral:

That's what i meant also. OD_ing that power section requires an EMP...   :icon_mrgreen:




markm

Quote from: alderbody on March 26, 2007, 09:33:00 AM
Quote from: markm on March 26, 2007, 07:20:45 AM
It's the preamp that's going into OD, not the power section!  :icon_neutral:

That's what i meant also. OD_ing that power section requires an EMP...   :icon_mrgreen:





Ahhhh. I see.  :D

lautmaschine

I'll have to check this one out.  Just yesterday I accidentally disconnected the tremolo section of ROG's EA Tremolo, leaving me with a simple MOSFET boost.  Sounded good, very good, in fact...  :icon_mrgreen:

Valoosj

where is the output of this boost? the middle lug of the pot I suppose?
Quote from: frequencycentral
You squeezed it into a 1590A - you insane fool!  :icon_mrgreen:
Quote from: Scruffie
Well this... this is just silly... this can't fit in a 1590B... can it? And you're not even using SMD you mad man!

markm


Valoosj

so one wire goes from the pcb, where it says "2"  to the middle lug, and then to the out? or is the little hole under the hole with "2" above it used for the out?
Quote from: frequencycentral
You squeezed it into a 1590A - you insane fool!  :icon_mrgreen:
Quote from: Scruffie
Well this... this is just silly... this can't fit in a 1590B... can it? And you're not even using SMD you mad man!

markm

There are two ways you could do this.
Wire all three lugs of the pot to the board and run a seperate wire for output from the solder pad below lug 2 on the PCB.
Or, wire lugs 3 to the board, lug 1 to ground, and use lug 2 as the output.
Savvy?  :)

soggybag

Is there a schematic of this some where? Looks interesting.

markm

Quote from: soggybag on August 11, 2007, 06:38:15 PM
Is there a schematic of this some where? Looks interesting.

It's actually a modification to the AMZ MosFET Boost.

http://www.muzique.com/schem/mosfet.htm

Valoosj

Quote from: markm on August 11, 2007, 06:34:35 PM
There are two ways you could do this.
Wire all three lugs of the pot to the board and run a seperate wire for output from the solder pad below lug 2 on the PCB.
Or, wire lugs 3 to the board, lug 1 to ground, and use lug 2 as the output.
Savvy?  :)

so the thick black line going all the way around is the ground? and that is what I should attach to the -9V?
I think I get it. but what is the use of R7 between lug 1 and ground?  just trying to learn some stuff about what each component does :)
Quote from: frequencycentral
You squeezed it into a 1590A - you insane fool!  :icon_mrgreen:
Quote from: Scruffie
Well this... this is just silly... this can't fit in a 1590B... can it? And you're not even using SMD you mad man!

markm

Quote from: Valoosj on August 11, 2007, 07:15:58 PM
so the thick black line going all the way around is the ground? and that is what I should attach to the -9V?

It's the groundplane for the circuit. Attach the grounds to it.....-9V.

Quote from: Valoosj on August 11, 2007, 07:15:58 PM
I think I get it. but what is the use of R7 between lug 1 and ground?  just trying to learn some stuff about what each component does :)

R7 prevents the output from being completely shorted to ground.

96ecss

Looks good Mark. That El Pistolero looks good too. I don't know where you find the time to do all these layouts, but keep up the good work.

Dave

markm

Quote from: 96ecss on August 11, 2007, 08:19:21 PM
Looks good Mark. That El Pistolero looks good too. I don't know where you find the time to do all these layouts, but keep up the good work.

Dave

Thank you for the support Dave!
It's always appreciated.
The El Pistolero is a basic Mosfet design with Mosfet clippers.
I was pleasantly surprised with the outcome.  :)

bonkdav

Quote from: markm on August 11, 2007, 07:00:45 PM
Quote from: soggybag on August 11, 2007, 06:38:15 PM
Is there a schematic of this some where? Looks interesting.

It's actually a modification to the AMZ MosFET Boost.

http://www.muzique.com/schem/mosfet.htm

how modified is it?  would it be possible to make one circuit that can switch back and forth (new to original)?

markm

Quote from: bonkdav on August 13, 2007, 01:08:44 AM
Quote from: markm on August 11, 2007, 07:00:45 PM
Quote from: soggybag on August 11, 2007, 06:38:15 PM
Is there a schematic of this some where? Looks interesting.

It's actually a modification to the AMZ MosFET Boost.

http://www.muzique.com/schem/mosfet.htm

how modified is it?  would it be possible to make one circuit that can switch back and forth (new to original)?

The tranny is different so, that may be an issue.

soggybag

I guess you could also use a BS170 for this?

I drew a schematic and it looks like it's AMZ MOSFET booster. But here the gain is all the way up. In exchange for a gain control there is a volume on the out put.

markm

Yes.
One probably could use the BS170 but, I think the 2N7000 is more for amplification purposes rather than switching?
Not sure.
I guess it's similar to this;

http://aronnelson.com/gallery/album76/Modified_MosFET_Booster_LAYOUT