Author Topic: Jb3 External Power Q (yes another one) (Read 6499 times)

Sterling · « **on:** March 30, 2004, 06:50:49 PM »

Not sure if this was covered in the below thread but if I were to use the 12V does it have to be 7ah or can I use a higher like 10ah. Also, with the "car adpator" and the 4 pin shuold I still put a fuse in? Just trying to plan for the festivals. Thanks guys.

Sterling

Brian Skalinder · « **Reply #1 on:** March 30, 2004, 06:59:28 PM »

The AH rating of the battery determines how long your battery will last - the higher the AH rating, the longer it'll last. So you should be fine with either 7AH or 10AH.

If it were me, I'd still put a fuse in (unless the car adapter has one built in).

Sterling · « **Reply #2 on:** March 30, 2004, 09:13:06 PM »

Thanks Brian! 10ah with a fuse it! Hey, you goin to STS9 next friday? MY girlfriend and I are thinking of making the trip down, this time actually staying and not having to drive home. Any hotel recomendations?

SS

F.O.Bean · « **Reply #3 on:** April 01, 2004, 09:45:07 AM »

fuse huh??? good point, i NEVER thought of that!!

ChrisV · « **Reply #4 on:** April 01, 2004, 05:23:41 PM »

Hmm, fuse?
I haven't built mine yet but I am thinking whether I should use a fuse or not. I was just wondering what exactly is a fuse protecting against when you are hooking it up to battery? I always like to be on the safe side so if there is the possibility of something going wrong I'd probably want to insall one then.

I can see my car adapter I just bought has a fuse mounted in the car lighter plug part and I can see how there can be unexpected surges it is protecting against(like when starting the car which is not recommended to have plugged in when doing anyways). But I was planning to snip that off since they are 2 seperate units and didn't need the car lighter piece.

sickrick43 · « **Reply #5 on:** April 01, 2004, 05:33:35 PM »

I think in this case, the fuse is to protect the CAR WIRING more then the JB3 - from shorts and overcurrents. If your JB3 flipped out and developed a short, you'd pop THAT fuse instead of the one in your car, or worse yet, fry wires in your in your cars wiring harness.

A battery will likely NEVER send out more current than is called for by the device on the other end, a fuse WILL however protect that BATTERY in the event or a short in the JB3 or adapter wiring.

In short, if you got room in your hack/DIY mods to put one in, it certainly can't hurt, but it protects the power source & not necessarily the JB3.

If you DO choose to include a fuse, make SURE you carry an extra one with your rig. Nothing like blowing one and not having a spare with you.

Rick

ChrisV · « **Reply #6 on:** April 01, 2004, 06:07:27 PM »

Ahh,
I never thought about it going in the other direction. Well if all I am protecting is the batteries and I probably not going to hassle with it. I was mainly concerned with protecting my JB3 and UA-5 when I build my battery cables soon for both of those.

Sterling · « **Reply #7 on:** April 01, 2004, 09:56:20 PM »

Ya I figure for .25 why not install one to be ont he safe side. And I bought 10 which are always in my bag

.
Sterling

F.O.Bean · « **Reply #8 on:** April 03, 2004, 09:21:13 AM »

stearnskid, i like that trey quote from amsterdam!!!

on the back of the worm, haha, classic!!

nic · « **Reply #9 on:** April 03, 2004, 09:30:48 AM »

Quote from: bean on April 03, 2004, 09:21:13 AM

stearnskid, i like that trey quote from amsterdam!!!

on the back of the worm, haha, classic!!

actually, I *think* its from Va Beach 7-21-1997

F.O.Bean · « **Reply #10 on:** April 03, 2004, 09:48:40 AM »

nah, the back of the worm is when he ate a bunch of shrooms over in amsterdam, and wasa pissing in an outhouse, and he said it felt like "riding the back of the worm"

7-1-97;-)

F.O.Bean · « **Reply #11 on:** April 03, 2004, 09:49:05 AM »

but you were DAMN close, one number off, not shabby bro

phishn · « **Reply #12 on:** April 03, 2004, 10:35:24 AM »

Quote from: bean on April 03, 2004, 09:48:40 AM

nah, the back of the worm is when he ate a bunch of shrooms over in amsterdam, and wasa pissing in an outhouse, and he said it felt like "riding the back of the worm"

7-1-97;-)

What are shrooms?

nic · « **Reply #13 on:** April 03, 2004, 10:36:31 AM »

bean, Trey talks about the "back of the worm" at the 7-21-97 VaBeach show as well

F.O.Bean · « **Reply #14 on:** April 03, 2004, 10:44:52 AM »

nice, ill have to give it a listen, it was earlier that month that he experienced it!!

greg-i have no clue;-)

nic · « **Reply #15 on:** April 03, 2004, 11:03:53 AM »

Quote from: bean on April 03, 2004, 10:44:52 AM

nice, ill have to give it a listen, it was earlier that month that he experienced it!!

the Ghost is actually pretty hot!
the narration comes at the end of Bathtub(smokin!) over the jam...Trey starts off talking about how its the first show in the US, leading a cheese "USA USA" chant, then talks about the first 4 songs of the show which were the US debuts of the new songs that debuted in Europe...blah, blah, blah...say they have 1 more song then they'll take a break, then he mentions the worm.
Wolfmans> Magilla, Birdland jam> Bowie in set 2 is prety good as well.

ahhh...I can talk Phish with anyone.
someone has got to help balance out this pro WSP stand around here

sorry for the thread highjack. +T's to all

F.O.Bean · « **Reply #16 on:** April 03, 2004, 11:07:56 AM »

the ghost from 2 nites later is even better;-)

hmmm, nothing bout the worm tho, right??

tight opener for sure!!

i could talk phish phorever too!!

nic · « **Reply #17 on:** April 03, 2004, 11:14:23 AM »

the worm narratoin is at the end of Bathtub

yeah, I did the first 3 nights(and the last 6) that summer and all were very good shows(except for Darien. . .

out of those first 3, think I prefer the 7-21 overall(both sets)great times all around at the shows though!

dklein · « **Reply #18 on:** April 05, 2004, 02:08:53 AM »

Quote from: ChrisV on April 01, 2004, 06:07:27 PM

Ahh,
I never thought about it going in the other direction. Well if all I am protecting is the batteries and I probably not going to hassle with it. I was mainly concerned with protecting my JB3 and UA-5 when I build my battery cables soon for both of those.

well, that depends where you keep your JB3 and UA-5...I had a short occur on my 9.6v 3000mAh battery while it was in the bag. The thing got hot enough to melt some electrical tape before the fuse blew. These batteries we're all using store a fair bit of energy!

sickrick43 · « **Reply #19 on:** April 05, 2004, 12:14:21 PM »

Quote from: dklein on April 05, 2004, 02:08:53 AM

Quote from: ChrisV on April 01, 2004, 06:07:27 PM
Ahh,
I never thought about it going in the other direction. Well if all I am protecting is the batteries and I probably not going to hassle with it. I was mainly concerned with protecting my JB3 and UA-5 when I build my battery cables soon for both of those.

well, that depends where you keep your JB3 and UA-5...I had a short occur on my 9.6v 3000mAh battery while it was in the bag. The thing got hot enough to melt some electrical tape before the fuse blew. These batteries we're all using store a fair bit of energy!

Had a regular square 9V short out with the clip/connector jammed between the two contacts. Melted the connector.

Theoretically, these things could explode or start a fire (or melt the case of an SLA). How'd ya like to be standing in the taper line, and have some wook tell ya your backpack is smoldering (or you have a trail of battery acid dripping down your back)? Most of the commercial (read: Eco-Charge) are internally fused. The DIY stuff isn't, unless you put one there.

Not to scare anyone, but all it takes is one accident. Consider fusing your power rigs, or at least protect the connections when it's "in the bag".

Rick

BJ · « **Reply #20 on:** April 05, 2004, 12:30:34 PM »

not trying to sound like an idiot..but was conemplating getting 2 slas for festies this summer...is there aDIY guid for fusing them? anyplace i could go read b4 i throw my money into this? thanx.

fyi: i will be running my UA5 and the JB3 off the sla's

Brian Skalinder · « **Reply #21 on:** April 05, 2004, 01:03:28 PM »

Quote from: razorback on April 05, 2004, 12:30:34 PM

not trying to sound like an idiot..but was conemplating getting 2 slas for festies this summer...is there aDIY guid for fusing them? anyplace i could go read b4 i throw my money into this? thanx.

Yup, the Archival Info forum.

Sterling · « **Reply #22 on:** April 05, 2004, 05:31:20 PM »

Gotta love those archives!

Everything ya need to know..and more. And ya Bean teh quote I'm refering to is from VA Beach. Those tapes are hot adn the show was even hotter, one of my favorites (although i do have a lot of favorites). Updat: have the batteries (12V10ah), ordered the fuses and cables, now to find a charger...

Sterling

John R · « **Reply #23 on:** April 05, 2004, 08:08:14 PM »

i almost had a fire in my pocket once, we were installing the tv's into a school and was stuffing all the aaa's into my pockets as we went along. they were conducting into themselve's and the change in my pocket. hot. did it with a 9v once too. marroon.

jr