Topic: Jb3 Car adaptor ?

[momule]

ya I noticed that the int batts were only 3.6

But I could have sworn I seen a thread saying someone had built a Batt pack on there own and it was running at about 4.5v and the Jb3 would not power up .

SO It was nice to hear from a couple folks that infact theres does not lock up or crazy shit. As I was able to find a true 5v car adaptor online for a Ipaq PDA
http://www.semsons.com/pdaplugincha.html

and I Have the adaptor already that I need to plug into the Jb3 just needs to be soldered on.
SO I almost went this route but Im kinda of a hands on type of a dude. (as I run a General Construction company)
SO Id like to buy it and have it now to start tinkering with.
Thanks for all the Help to all of ya's
+t's all around

Nick

[ChrisV]

I am thinking they built a battery pack that used rechargeable batteries and was not a constant regulated 4.5 V....probably dipped too low once discharged some or perhaps too high when fully charged....I dunno.

Yes, that Ipaq car adapter's voltage would definately be perfect but I dunno if 500 mA output is gonna be enough juice for for the JB3(especially on startups).   10 bucks is a good deal though if by chance it did work.

[F.O.Bean]

i think i recall somewhere reading that it takes a minimum of 500 or 1000mah to startup alone

[Kindguy]

Got mine from wal mart. With the tape adapter for 15 bucks. it's panasonic.

[F.O.Bean]

which end is above the "tip"

a positive (+) or a negative (-)?

its from the wal-mart 15 dollar ones!!!

thanks,m
  bean

[F.O.Bean]

guyz, which end and whatnot did you solder on to the 4-pins???

meaning, which end is (+) and which is (-) on the cig lighter adapter end???

there is white writing on one cable and the other is totally black!!

thanks guyz!!

bean

[F.O.Bean]

shameless bump....

[F.O.Bean]

biggity bump....

[momule]

I'll bump this one more time aswell , as I have the same ?

Anyone

nick

[F.O.Bean]

bump

[JNT]

guyz, which end and whatnot did you solder on to the 4-pins???

meaning, which end is (+) and which is (-) on the cig lighter adapter end???

there is white writing on one cable and the other is totally black!!

thanks guyz!!

bean

Bean, Your best bet is to buy a cheap meter and test this if you are not sure.  You definatly don't want to guess.  I think radio shack sells meters starting at about $10-20.

Joe

[F.O.Bean]

i have a multimeter and all that, can you believe i went to electronics school

im an idiot, when putting the wal-mart one together, the tip that goes into the jb3 was set "tip" "positive", so that would mean all i have to do is a continuity test from the jb3 adapter>4-pin end, the "shield" is negative on the jb3 end, and inside the tip is positive, i will let ya'll know whats what in a minute actually, im gonna chop the car adapetr end off....

[F.O.Bean]

alright, first, if your wal-mart jb3 head is "tip" at "Positive", then the cable WITH writing is a negative since it holds continuity w/ the "shield" at the jb3 end.....

heres whats fucked up, i cannot for the life of me get a signal or any reading from the other cable, the all black one.......NOTHING, no continuity, no reading or anything......

this is my silly question, do i need to be applying voltage or current to see anything on the "hot" wire??? im stumped

cause i cannot for the life of me can figure that out, is it because i chopped the thing and there no fuse in the cig lighter end now???

on the negative wire W/ writing, at the jb3 end, i get either continuity or a reading of about 160 ohms.......

ANY help is MUCH appreciated, cause w/ out continuity, im nopt doing this

and on a side note, it all werked w/ the cig lighter end on in the car, FWIW, like a champ, no freeze up or anything???

bean

[dr.ph0b]

y not buy the car adapter one from creative? then buy a car lighter socket to connect to your battery pack, so u can use it in your car lighter still, or external SLA battery

[F.O.Bean]

too many connections and hassle that way!!!

but i may do that just to have one w/ a cig lighter end!!

i just did some more continuity test and on the wire w/ writing(the negative)(-) "ring" have continuity, but when i measure continuity w/ the "tip" and the all black wire, i get a reading of about 130 ohms steadily!!!

weird, continuity on one end, and just an ohm reading on the other, WTF??

chrisv, mmmatt, HELP ME!!