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Message |
    
Therealporkchop
Intermediate Member
Username: Therealporkchop
Post Number: 149
Registered: 11-2002
| | Posted on Friday, February 18, 2005 - 10:22 pm: | 
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I've been seeing these capacitors in these car audio shops. I assume they are for keeping a steady amount of power to linear amps in cars. Could you use this for your cb or amp? How could you increase the voltage in your truck from 14.2 volts to say 16 volts, that is just for the cb and amp? |
Racer_x
New member
Username: Racer_x
Post Number: 9
Registered: 2-2005
| | Posted on Saturday, February 19, 2005 - 8:46 am: |
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Caps help to keep the voltage stable. They don't raise it, but help to keep it from dropping when there is a large surge of current.
I use a fairly large cap with my 10 amp power supply for a stock SSB CB. I don't know if the power output is any better, but I feel better about it. I'm also sure that there is no ripple at all from the supply, so my signal is as clean as possible.
I don't know how you'd get the voltage to just 16 volts. Most folks who "volt" their amps go up to 18 volts with a separate alternator that charges 3 6 volt batteries in series.
Someone here mentioned a specialized battery that has two different sets of terminals - I think it was for racing. |
Pig040
Advanced Member
Username: Pig040
Post Number: 694
Registered: 7-2003
| | Posted on Saturday, February 19, 2005 - 9:57 am: |
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Most of the guys that I have seen "Volt Up" used Lees-Neville alternators scavenged from old school buses, or ambulances, and a dial a volt box to control them, hard on the equiment, but it screamed!
Rich |
Patzerozero
Intermediate Member
Username: Patzerozero
Post Number: 465
Registered: 7-2004
| | Posted on Saturday, February 19, 2005 - 3:17 pm: |
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an xforce 'motor maul' uses a step-up transformer & multiple batteries to get variable voltage up over 20 volts out of the box using the stock alternator & retaining 12 volts for the vehicles electronics. it, too is hard on some components, generates quite a bit of heat & is every bit as a pricey as an aftermarket alternator producing 200 amps. of course for more $ they make 1 that will get you in the 400 amp neighborhood. the major benefit is not having to redesign the belt system that was disturbed by the installation of the leece neville. which is all for nought if you're going AC with tubes and need the 8 leece neville's to get enough juice to those 2-4cx15000 steel babies. i guess the stereo store would need to stock caps the size of tree stumps for them... |
Racer_x
Junior Member
Username: Racer_x
Post Number: 12
Registered: 2-2005
| | Posted on Saturday, February 19, 2005 - 8:02 pm: |
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I've seen 50 farad caps which should be big enough to do whatever you need a capacitor for. Although the bigger ones seem to have voltage ratings of 16 volts while some of the smaller ones go to 24 volts and above.
Has anyone ever used a "Batcap" or known anyone who's uses one? As I understand it they're actually batteries which have a very low internal resistance so they're as fast as a capacitor. |
Therealporkchop
Intermediate Member
Username: Therealporkchop
Post Number: 150
Registered: 11-2002
| | Posted on Saturday, February 19, 2005 - 11:41 pm: |
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I am asking about this for my dumptruck. I don't have an alternator problem, I'm getting about 14.2 volts and the truck uses two batteries. The amp output is 200 amps I believe. I know it's huge, I'm not sure of the rating though. I don't really have room to add any batteries, it's a quint axle truck, so any spare space it had, drop axles took that space up.
I was just thinking I could use a cap like that to keep the voltage constant or maybe increase it a little. Even with a battery designed to put out the 16 volts, I still think it'll drop when I key up. In my shack, I run a battery and a charger. At 14 volts my setup sounds good and my amp puts out descent. If I kick the charger on and get it up to around 16 volts or so, I notice my setup swings more, and people tell me I sound better and louder. So I just thought I could apply that to my truck somehow.
Thanks!! |
