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Message-ID: <3D874DD5.C2262583@rica.net>
From: John Popelish
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Newsgroups: sci.electronics.design
Subject: Re: amplifiers high gain low current
References: <974d777c.0209170703.545f316a@posting.google.com>
Date: Tue, 17 Sep 2002 15:44:31 GMT
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Samuel Kristanto wrote:
>
> My name is Samuel, I have a problem with my final project.
> I have a power supply that step up from battery 3V to 50V(10mA)--> I
> use boost regulator from Mic2570-2BM.
> Now I have to make an amplifier using the output from my soundcard to
> the input of my amplifiers, I want to use maybe an OP-AMPS but its
> very difficult to find the OP-AMPS that fit with 50V and need better
> power than 500mW. Please help me to solve this amplifiers problem.
> please reply me at : tjongi@mitra.net.id
>
> Thanks a lot
>
> Samuel Kristanto
High voltage opamps that draw less than 10 ma are available, but they
may not be cheap.
http://www.apexmicrotech.com/pdf/power_op_amps/pa81pa82.pdf
--
John Popelish
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