[sdiy] HV Voltage translation

[mike ruberto]

HI Karl,

I've been working on my mixing console again which has +/- 22V rails
and looking for devices to replace it's output amplifier modules.

This looks somewhat promising though I think the parts count is too
high for my available space:

http://www.tnt-audio.com/clinica/dynamicopamp_e.html

Also there are many op-amps that can run on 44 volt supplies. The
OP275 seems like a decent one:

http://www.analog.com/en/prod/0,2877,OP275,00.html

Many standard opamps also have a high voltage model available.

M. A. Ruberto

On Nov 20, 2007 11:03 AM, Karl Ekdahl <elektrodwarf at yahoo.se> wrote:
> Hi list
>
> I need some help amplifying a DC signal to voltages that is beyond the common opamp range, say 0-5V amplified to 0-30V for example. I was thinking that one of the easiest ways should be to use a opamp with a transistor in it's feedback loop but i cannot really seem to make that work. Any ideas greatly appreciated!
>
> Karl
>
>
>
>
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