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Goosemaster

Lifer
Apr 10, 2001
48,775
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Please excuse me for asking such a pathetic question..but I am finally getting this stuff (due to effort now:D) and can't hold back my curiosity...

For example, what application would a 1F+ capacitor have with so much current ready for discharge? (besides blowing stuff up;)

I would ask a question about inductors but I'll hold on for now since I am still new at the concept of preventing current from flowing and the inductance already present due to the magnetic fields created by the current flowing through the wire etc...etc...
 
lupi

lupi

Lifer
Apr 8, 2001
32,539
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126
Those big caps are good to keep the bass thumping when the tunes start kicking it!
 
G

Goosemaster

Lifer
Apr 10, 2001
48,775
3
81
Originally posted by: lupi
Those big caps are good to keep the bass thumping when the tunes start kicking it!
Click to expand...

well I know that..I am thinking BIGGER...

I assumed that 1F was a hell of a lot of charge....

what exactly is a bucketful of charge then? :D
 
lupi

lupi

Lifer
Apr 8, 2001
32,539
260
126
Think industrial. Nothing like working on solid state components the size of a football ;)


Particularly when ya go to hand out the discharge rod.
 
G

Goosemaster

Lifer
Apr 10, 2001
48,775
3
81
Originally posted by: lupi
Think industrial. Nothing like working on solid state components the size of a football ;)


Particularly when ya go to hand out the discharge rod.
Click to expand...

that sound like fun:D

I think I held a 10^1 + F capacitor once at my old school but I was an idiot back then and didin;t knwo what the hell it really was...

*stick out your hand*

lofl;)
 
OS

OS

Lifer
Oct 11, 1999
15,581
1
76
one our suppliers also does hybrid technology work and an engineer i talked to mentions they have expanding applications for supercaps to replace batteries in hybrids, thus reducing the cost of hybrid systems and the alleged environmental impact.
 
G

Goosemaster

Lifer
Apr 10, 2001
48,775
3
81
Originally posted by: OS
one our suppliers also does hybrid technology work and an engineer i talked to mentions they have expanding applications for supercaps to replace batteries in hybrids, thus reducing the cost of hybrid systems and the alleged environmental impact.
Click to expand...

I was thinking about that...for simple stuff, capacitors seem like they would prove quite effective(large ones, would be simpler (no moving parts) at storing...



oh crap....capacitors store voltage and INDUCTORSare the ones that hold current, no?


dammit.....

*goes back to reading his books*
 
lupi

lupi

Lifer
Apr 8, 2001
32,539
260
126
Say you have a high voltage DC ouput and you want to make sure that any momentary changes with the supply don't effect the output; result some big arse caps among other things.
 
So

So

Lifer
Jul 2, 2001
25,923
17
81
Driving large motors, basically anything that needs a lot of current intermittently...
 
Rubycon

Rubycon

Madame President
Aug 10, 2005
17,768
485
126
Originally posted by: So
Driving large motors, basically anything that needs a lot of current intermittently...
Click to expand...

Our 20MW pods can provide full torque at 0 rpm. :D

Oh and the 1F cap makes up for the relatively high impedance of the supply of a low voltage high current feed. (in the case of a bass amp running in a motor car application)
 
G

Goosemaster

Lifer
Apr 10, 2001
48,775
3
81
Originally posted by: futuristicmonkey
Originally posted by: Rubycon
Originally posted by: TuxDave
Originally posted by: WhoBeDaPlaya
Phase-locked loops. :)
Click to expand...

Yeah... a 1F cap in a PLL. You'd have a convergence time of like... a month or so...
Click to expand...

:laugh:

This comes to mind. :D
Click to expand...

lmao!
Click to expand...


I sort of maybe think I get that:eek:


Convergence = time it takes for the capacitor to achieve maximum charge density on one of the plates / maximum resistance to the circuit and then discharge?


I really just need to keep studying.

Doing the problems is easy(well not THAT easy;) ) ...understanding it takes that extra mile:p
 
So

So

Lifer
Jul 2, 2001
25,923
17
81
Oh, also as a "DUH" the power company uses huge capacitors to keep voltage up in entire city areas, and keep the power factor right.

(Duh because I forgot to mention it)
 
WhoBeDaPlaya

WhoBeDaPlaya

Diamond Member
Sep 15, 2000
7,414
402
126
Just remembered another - high-power relaxation oscillators. Great if you need to generate insane Teslas :)
 
B

BrownTown

Diamond Member
Dec 1, 2005
5,314
1
0
Just remeber the capacitance doesn't really tell that much of the store, big power capacitors are not more farads, they are jsut at high voltages. And since energy is equal to the square of the voltage you get a whole lot of energy on a 161kV capacitor bank.

EDIT: as for "crazy" applications, capacitors are used in pretty much every single circuit today, so WHATEVER application you are thinking of there are probably at least a few capacitors in there.
 
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