I went to law school to avoid doing math, because I flunked Calculus 101, thereby dashing my hopes of the Nobel Prize in Physics ;D.
So, when I got into this guitar wiring stuff, I found myself having to trot out Ohm's law on a regular basis. Luckily, in this digital age in which we live, there are online calculators to help dummies like me figure out series capacitance and so forth.
Our member wolf has a good such calculator on his website. But I got tired of having to surf over to an online calculator.
I now can do this stuff from my desktop, and it's got everything one would ever need and more. It calculates resistances, capacitances, inductances, reactances, LED resistor dissipation, pretty much the whole shebang.
It even has a neat "point-n-click" resistor color code calculator. I haven't had the occasion to use this yet, but I can see where it would be very handy.
Another thing I like is that each calculator shows the theory and underlying equations off to the side, which is a good reminder since I cannot seem to remember the theory: "Do caps add in parallel? Or, is that resistors?". This way, it's staring me in the face as soon as I open the appropriate calculator, so if it's simple addition, I don't need to use the app.
I always worry a bit with Freeware, but my Norton software says the .exe file is safe, for what that's worth. It is stated to run in any Windows OS since 98, although apparently it's a bit of a crapshoot in Mac OS or Linux-based systems. Works fine in my Vista, anyway, which is sort of the red-headed stepchild of Windows.
Anyway, I found this download to be quite useful, so I'm throwing it in the mix here, so to speak.
It doesn't matter if you're good at math or not, some times it's just easy to plug in the numbers than to go through trying all the equations
If you want a free Android App that does a lot of this as well, check out ElecDroid. I use it mainly for the resistor colour codes (so very colour blind), but it has voltage dividers, frequency calculations (useful for tone pots work) and tons more.
Pretty interesting, but what about us who insist on running on Linux or even worse FreeBSD?
Talk about the 1%... Face it guys, running Linux is a choice, just like any other OS. Personally, I have no axe to grind either way, but when you constitute just a little over 1% of the personal computer using world why are you constantly surprised at the lack of apps ported to your operating system? MAC users outnumber your guys by a factor of about 5 to 1, and they've gotten used to it by now...
OK, if you really want to see what the rest of the world sees, you can always run a VM client and emulate Windows on your Linux device. This is a resource intensive way to go, but you can do it for free and expect moderate results. Apple does this with VMWare, you could too, but the extra licenses will run you more than just running Windows straight up.
There is a free option for you guys. Just remember, you always get what you pay for.
Oracle VM Virtualbox has a version that may run in FreeBSD...but even that's somewhat of an orphan in in Linux world. This will allow you to run something sumgai showed me a while back called ReactOS. ReactOS is an open source OS that is trying to emulate Windows XP, without the Redmond, WA connection...because we all know Satan lives in Redmond, WA...
I will say that ReactOS is still in the development stages, and being open source there are more than a few areas in need of development to make the emulation complete and glitch free. I say this because even if you do go through all of the aforementioned hoops it still may not run the software detailed in the beginning of this post.
I will say that it takes a certain amount of technical savvy to make all of this run, and it's not for the point and click crowd...but hey, you're all devout Linux guys, you should be used to beating your operating system around to make it work...
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