Approximate battery voltage drop?

coolio · Post by **coolio** » Mon Jan 23, 2006 9:40 pm

K I got a car adapter that outputs it says 3v 1.5amps. Im hoping a few tenths more on the volts part but anyways, How do I hook it up to 5 1.5 volt batteries and then to the N64 to see if it works?

Post by **Gamelver** » Mon Jan 23, 2006 9:54 pm

batteries in series....then, postive output of batteries to the postive input of the regulator. negative output to the negative input of the regulator (car adapter

).....3V output of the regulator to the 3.3V input of the N64...negative output (all negatives are the same, though, in this case) to the negative input (ground) of the N64. really simple, actually

.

coolio · Post by **coolio** » Mon Jan 23, 2006 9:57 pm

so should I break open the adapter?

Post by **Gamelver** » Mon Jan 23, 2006 10:04 pm

you can, to save space.

coolio · Post by **coolio** » Mon Jan 23, 2006 10:06 pm

oh and can I just use the negative on the battery to the ground on the N64 instead of the one from the adapter? I'm just testing it right now so I won't break it.......yet!
and what oart of the adapter is the positive in part? the tip of it or the wings and hold it in the socket?

Post by **Gamelver** » Mon Jan 23, 2006 10:23 pm

yes, it's all the same (it's the 0V reference point, commonly referred to as "ground"

). but make sure you connect ground between the batteries, adapter, and N64.

coolio · Post by **coolio** » Mon Jan 23, 2006 10:28 pm

how do I do that? I'm a bit nooby in the whole powering it part. And are the wings or the tip the postitive part of the adapter?

coolio · Post by **coolio** » Tue Jan 24, 2006 4:29 pm

How do I connect ground between them?

Post by **Gamelver** » Tue Jan 24, 2006 4:32 pm

don't double post, just edit your last post, please.

and you connect ground by connecting the negative outputs/inputs to each other.

daguuy · Post by **daguuy** » Tue Jan 24, 2006 4:33 pm

with a wire

find the ground thread (where negative goes) and connect it to ground on the N64

coolio · Post by **coolio** » Tue Jan 24, 2006 5:44 pm

I was trying to see if the adapter worked. I hooked up 7.5v of batteries, then put it into the adapter. I wasn't sure where the positive current went in so I tried both ways. To see if it even worked I put it on 4.5v (to test)and thought "Hey if it can power this little dc motor it'll power my N64 on 3v" put the motor against the wires and nothing. I take the batteries off the adapter and they barely make the motor go. So i'll get some new batteries because they were probably almost dead anyway but are there any other reasons for it not working?

Post by **Gamelver** » Tue Jan 24, 2006 5:52 pm

wait, so you reversed the polarities? that might have fried something....in fact, it probably did. read up a bit on portables and stuff (like the sticky, for example) before trying this

...it can help!

diagrams have been posted, and the how-to should be in the sticky...

daguuy · Post by **daguuy** » Tue Jan 24, 2006 6:56 pm

and finding the pinout for car adapters is extremely easy: the wire that went to the tip (or fuse going to the tip) is input. there are 2 wires that come out of the car adapter, the plain one is ground and the one with a strip/pattern or something is output

coolio · Post by **coolio** » Tue Jan 24, 2006 7:01 pm

Thx daguuy that was the answer. And I solved my problem of it not working

DOPE! I made the battery pack wrong.
So I have to put input into it, then connect ground, then ground from the non-patterned wire to ground again? This is making sense now thanks so much guys!

bioniclebert · Post by **bioniclebert** » Tue Jan 24, 2006 8:16 pm

yup, but a good tool for you would be a multimeter. It's handy to make shure that your adaptor is outputting the correct voltage, and if you connected it properly.