[sdiy] B+ Current consumption

[Michael Ruberto]

I just re-read your message and realized I missed the whole "use a triode" 
part. It's been a long day. Diode biasing isn't needed in something that 
doesn't have the .7V dead zone...

This might sound wacky but since I am dealing with such small levels could I 
get away with small telecom audio transformers?
Not sure what the frequency range is on them though...

I have enough tubes to try the push/pull topology but I'll still need to 
keep it really simple if possible. Can you point out some references to the 
V-Mu compressor? Sounds interesting.

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: Fri, 19 Jan 2007 01:15:55 +0100
>
>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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