Re: Need a calculator that knows about coulombs
erk.
On Tue, Dec 29, 2015 at 5:12 PM, Joel Rees <joel.rees@gmail.com> wrote:
> On Mon, Dec 28, 2015 at 9:15 PM, Gene Heskett <gheskett@shentel.net> wrote:
>> On Monday 28 December 2015 01:59:44 Gener Badenas wrote:
>>
>> Back on the list where this belongs.
>>
>>> On Wed, Dec 23, 2015 at 9:09 AM, Gene Heskett <gheskett@shentel.net>
>> wrote:
>>> > Greetings all;
>>> >
>>> > Do we have such a beast?
>>> >
>>> > Thanks.
>>>
>>> There might be some projects in github that does this.
>>
>> Qucs seems to be the default plaything for such these days. However I am
>> having a heck of a time making it work to actually do the simulation of
>> the charge-pump detection circuit I have drawn, basically 2 caps, 2
>> diodes and a loading R on the output.
>>
>> I have joined the qucs-help mailing list, but it appears I may be the
>> only subscriber. No other activity in about 18 hours anyway.
>>
>> I've looked at git-hub a few times but it doesn't take long to get lost
>> in that corn maze.
>>
>>> > Cheers, Gene Heskett
>>> > --
>>> > "There are four boxes to be used in defense of liberty:
>>> > soap, ballot, jury, and ammo. Please use in that order."
>>> > -Ed Howdershelt (Author)
>>> > Some mill pix are at:
>>> > Genes Web page <http://geneslinuxbox.net:6309/gene/GO704-pix>
>
> So, Gene, did you try stackexchange, like Anders suggested some time back?
>
> On Thu, Dec 24, 2015 at 9:36 AM, Anders Andersson <pipatron@gmail.com> wrote:
>> http://electronics.stackexchange.com/
>>
>> Hope this helps.
>>
>
> Stackexchange does seem to be the default mail list for a lot of
> off-list support these days.
>
> Also, would something like this help?
>
> joel@joelsbox:~$ bc -l
> bc 1.06.95
> Copyright 1991-1994, 1997, 1998, 2000, 2004, 2006 Free Software
> Foundation, Inc.
> This is free software with ABSOLUTELY NO WARRANTY.
> For details type `warranty'.
>
> # code follows
> define vc(vs,t,r,c) {
> return vs * (1-e(-t/(r*c)))
> }
>
> # use follows
> for ( i=0.0; i<5.0; i += 0.1 ) { print i, ":", vc(120,i,83,.01 ), "\n" }
> 0:0
> .1:13.62082702075229745240
> .2:25.69559630209412900880
> .3:36.39979605263053873920
> .4:45.88899535985331237480
> ...
You said 51 ohm resistor, and t would make more sense than i, so make that
for ( t=0.0; t<5.0; t += 0.1 ) { print t, ": ", vc(120,t,51,.01 ), "\n" }
And you could calculate the power and current in the loop and print
that, as well.
>
> The -l option brings in the library, I don't remember if you needed
> that for the power of e function, e(), but it doesn't hurt.
>
> I refreshed my memory on the R time constant, and the associated
> calculus (which you can mostly ignore) here:
heh.
"RC time constant"
mea culpa
> http://www.electronics-tutorials.ws/rc/rc_1.html
> https://en.wikipedia.org/wiki/RC_time_constant
>
> I'll try to play with your circuit using qucs on openbsd to see if I
> can shed some light on that. Too bad we don't have a debian package
> between squeeze (was it?) and sid.
--
Joel Rees
Be careful when you look at conspiracy.
Arm yourself with knowledge of yourself, as well:
http://reiisi.blogspot.jp/2011/10/conspiracy-theories.html
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