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From: "Ken McDonald"
References: <firstname.lastname@example.org> <7FYW9.1208$PR2.email@example.com> <firstname.lastname@example.org>
Subject: Re: Don't do this! Just don't!
X-Newsreader: Microsoft Outlook Express 6.00.2800.1106
Date: Mon, 20 Jan 2003 20:20:44 GMT
NNTP-Posting-Date: Mon, 20 Jan 2003 15:20:44 EST
"Spehro Pefhany" wrote in message
> On Mon, 20 Jan 2003 20:06:27 GMT, the renowned "Ken McDonald"
> >> +15
> >> |
> >> p
> >> 10K o <--------------10K -----x--- small offset
> >> t |
> >> | 49R9
> >> | |
> >> | 0V
> >> -15.
> >> It's a bit nonlinear and the output impedance varies a teeny bit,
> >> (from 12.5K||49R9 to 10.0K||49.9) but not bad.
> >If the pot is adjusted to the rail, won't the 49.9 ohm resistor smoke?
> Perhaps I should have mentioned that the 49R9 resistor should be rated
> for a *minimum* of 1/8 mW.
How much power will a 49.9 ohm resistor connected to 15 volts dissipate? I
keep coming up with 4.5 watts.
> Best regards,
> Spehro Pefhany
> "it's the network..." "The Journey is the reward"
> email@example.com Info for manufacturers:
> Embedded software/hardware/analog Info for designers:
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