Power Problems Please Look

**kmfdmk** · 02-15-2004, 09:17 PM

Originally Posted by r3load

ou are not going to save yourself any money putting a second alternator in and having all of that bulky equipment in your car

I've already got the second alternator, and It's probably going to be needed when I finally do run all the electronics or a majority of them @ once.

I also dont' really consider an alternator, that's replacing a non-functioning AC compressor, and a power inverter all that bulky. Even if I did, space isn't a factoring issue.

My question STILL stands about a ITPS + PW-120 being able to run 3 PCI cards in addition to a Athlon 550 Slot A. (the 3 pci's being Sound, Video, and 802.11b) I could theoretically get rid of Sound & 802.11 but the Video I cannnot, and also removing the W-Lan and Sound to make the system run is ruining the point of putting the system in the car in the first place to be able to have Video/DVD & mp3 on the go as well as 802.11b compatability and the GPS location setup.

**none** · 02-15-2004, 09:24 PM

Yes, a 150 watt Opus should have no problem running that system. But that is beside the point, you system as it is right now should be working better than it is, and that should be fixable. Let's not get distracted

we know you don't want a DC-DC. I think there probably IS something wrong with the electrical system on your car, but it could also be poor wiring leading into the inverter, or a faulty inverter.

**frodobaggins** · 02-15-2004, 09:34 PM

Try a smaller alternator pulley.
But I would still check the electrical system first to make sure it's not
something else.

**kmfdmk** · 02-15-2004, 09:35 PM

Originally Posted by none

I think there probably IS something wrong with the electrical system on your car, but it could also be poor wiring leading into the inverter, or a faulty inverter.

I think you might be right. As of right now I'm running the inverter via the Cigarette lighter. I'll try the setup later this week with leads running directly from battery & frame to test the theory that it's an ineffective connection between power leads.

I also think I might be able to get the UPS going on the nasty 120v supplied by the Inverter, the UPS I Have (an APC SU700NET Smart-UPS) has the ability to adjust how sensitive the UPS is to jumping in and providing battery power. I hope to get the setup working when I tweak the sensitivity on the UPS.

Thanks for the input, I may go to a 150W Opus @ a later date if I come to the conclusion that all this gear sucks and is too buggy/inefficient. (of course I'll have a lot of stuff to ebay off

)

**frodobaggins** · 02-15-2004, 09:38 PM

Originally Posted by kmfdmk

I think you might be right. As of right now I'm running the inverter via the Cigarette lighter.

If you had told us that first then the first thing we said would be
NO, NO, NO !

**kmfdmk** · 02-15-2004, 09:39 PM

Originally Posted by frodobaggins

Try a smaller alternator pulley.
But I would still check the electrical system first to make sure it's not
something else.

My thoughts exactly, see if I can overdrive the alternator just a bit. I'll do up the math here in a bit.

@ _____ RPM x ______ diameter pulley = ____ Volts

I'll check both the idle & cruise RPM's, and then figure out the circumference of the crank pulley & the alternator pully and figure out how many RPMS increase will result if I shrink the size by _____ x amount.