[sdiy] HV Voltage translation

[Karl Ekdahl]

Hi Brock



This is pretty close to what i'm looking for albeit i was hoping for something simpler, i was thinking that something like this would work http://www.sdiy.org/knas/temp/lowtohigh.jpg but it's not and i can't figure out why...

Karl

----- Original Message ----
From: Brock Russell <brockr0 at shaw.ca>
To: Karl Ekdahl <elektrodwarf at yahoo.se>; Synth DIY <synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, November 20, 2007 2:18:20 PM
Subject: Re: [sdiy] HV Voltage translation

Op Amp Booster Designs, see figure 6
 <http://www.national.com/an/AN/AN-272.pdf>
Jim Williams has a similar precision booster, page 39 figure F3 
<http://www.linear.com/pc/downloadDocument.do?id=4177>

Brock


At 08:03 AM 11/20/2007, Karl Ekdahl 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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