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I have an LED strip that was originally ment to be powered using a wall adapter but I am powering it with 8 AA batteries right now. If The LED strip is turned off but the connection between the batteries and LED Strip still exists, can this drain the battery at all, or would it be better to...
WOW. *facepalm* You're right. I soldered the wires on backwards! I just took a rubber band and tied the cap on backwards. It doesn't snap on nicely anymore but it works. Thanks.
Well I have a bunch of single LEDs... but uhhhh..... I don't know if they have a resistor? I might just buy a multimeter... they are only like 9 bucks right? I think I saw one at Bimart.
Are you sure that the battery capacity has to do with powering up the device properly? I was under the impression that the capacity of the battery simply determines how LONG the battery can last, not how much power it pumps out at any given time.
Yes, they are compatible with each other and...
I don't have a multimeter at the moment but do these images help determining the polarity or do I still need a multimeter ?
This is a "K" tip, with the - symbol on the back of the white plastic and the + symbol on the side where the metal tip protrudes
**broken link removed**
what it reads on...
Horizontal AND vertical prong? What can be attached to these?
Mini Water Fountain Pump | Virtual Village - US
Bought this pump and am going to be wiring it up to a transformer so I can plug it into the wall, but I was wondering why there are prongs like this at the end of the wires with...
Thanks guys! So if I just get a 9V or 12V (nothing higher) water pump, then I can continue with the project? Will I need to buy anything else like some sort of new transformer, or will I be able to just get a low voltage pump and start wiring everything up right away?
Btw, I never mentioned...
Ahh okay, got it.
What about a maglite flashlight?
Usually a DC illustration show the electrons flowing through a wire out the - end of the battery, into the light bulb, and then into the + end of the battery. Like this:
With a Maglite however, there is just a spring touching the - end of...
How to power a laser pen? (very easy question)
I have a laser pen. It takes two 1.5V AAA batteries.
Can I use this adapter, cut the wire on the end, and solder BOTH of the wires onto the spring?
**broken link removed**
- I have one guy telling me to wait and get another pump before I do anything, and I have another guy telling me that what I have is fine and to go ahead and wire it up. What am I to do?
- I still need to know where to solder the AC Mains wire to. Before the switch or after the switch? **broken...
I couldn't find any when I did a Google search. This was the closest thing I could find **broken link removed**
Any ideas? :-?
Yes, I didn't know where to connect it. Should it connect to the wire going into the bottom switch, or the wire coming out of the bottom switch? :-?
If I forgot...
Using 4.5V is a hazardous voltage? I have to use 4.5 because I am using a Maglite light bulb because they project the shadows on the wall the best compared to other bulbs I've tried. Why is 9V or 12V better?
How? What is the little port thing called?
Can you show me how to wire it up? I'm...
The only reason for doing this would be because these are more common, correct? Would it be more cheaper? How would I "regulate" it through a "regulator IC"? I don't understand what these terms mean.
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