[sdiy] B+ Current consumption

[JH.]

I don't know.
What I've tried was something very expensive:
UTC A-10 into 6BC8 into UTC A-19.
It's the VCA part of a Variable Mu compressor, and I just found that it 
sounds increadibly good with overdrive.
I'm quite sure it will also do the trick with cheaper tansformers, and other 
triodes.

JH.



----- Original Message ----- 
From: "Michael Ruberto" <frankentron at hotmail.com>
To: <jhaible at debitel.net>; <synth-diy at dropmix.xs4all.nl>
Sent: Friday, January 19, 2007 12:00 AM
Subject: Re: [sdiy] B+ Current consumption



Alright so lets assume a diode biased push/pull topology. Would it be to my
advantage to play with the value of RB1 to get an acceptable distortion
level?
Or should I not use the biasing diodes? ;)

I've never built anything with audio transformers before so I don't know
what parts to consider. Any suggestions here? The power amp accepts an input
up to 600mV.

M. A. Ruberto

>From: "JH." <jhaible at debitel.net>
>To: "Michael Ruberto" <frankentron at hotmail.com>,
><synth-diy at dropmix.xs4all.nl>
>Subject: Re: [sdiy] B+ Current consumption
>Date: Wed, 17 Jan 2007 19:39:15 +0100
>
>
>
> >If I wanted a clean sound I would just patch my Presonus TubePre into the
> >effects loop I am adding to the organ.
> >My goals are to make it distorted and really simple.  I want my Hammond
>to
> >scream :)
>
>You might consider adding a small push/pull stage with an output
>transformer
>then,
>instead of just building a tube preamp. No power tube required - the sound
>is in the
>circuit topology, IMO, so you could build something like a 100mW (or even
>less)
>PP stage from small signal triodes.
>
>JH.
>

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