[LAU] OT: RC element calculator

[Robin Gareus]

On 07/21/2011 01:09 AM, Ralf Mardorf wrote:
> Are w3m and Iceweasel broken here?
> 
> Does the calculator work for anybody?
>
> http://www.sengpielaudio.com/Rechner-RCglied.htm

Works just fine in iceweasel 3.5.19 as well as firefox-5.0.1
on debian. Maybe you've disabled javascript in your browser?

> I know there are more extensive calculators available, but I would have
> a simple calculator like this, to demonstrate something.
> 
> Does anybody know such a simple calculator that works?

Come on. It is as simple as doing 4 multiplications. The cut-off
frequency of an RC-circuit is given by  1/(2*M_PI * R * C).

I have an http://en.wikipedia.org/wiki/HP-45 on my desk for such
calculations. Opposed to 'bc' its built-in timer is also handy for
boiling eggs. :)

> Thanks in advance,
> 
> Ralf
> 
> PS: Sorry, it's OT, but I suspect that some of you know such a thingy.

http://lmgtfy.com/?q=online+calculator+RC
which leads to http://hughestech.com/rc_calculator/