All Questions
9 questions
0
votes
1
answer
83
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Peltier-based liquid cooling system
I-m doing a liquid-cooling project for fun, and, well powering it and cooling the hot side seems borderline impossible. I need some help.
To clarify. This is literally only to cool water, and not to ...
5
votes
2
answers
1k
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Why is my multimeter not measuring current?
I'm doing a little bit of experimentation with a glass of water and a 9 V battery. I added a little bit of salt to the water, and I measure the resistance in the water from probe to probe to be ~60 kΩ....
- 186
0
votes
2
answers
2k
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How dangerous are high voltage batteries in water?
I am currently building an electric surfboard. The power source will be 16 li ion batteries in series to make a nominal 57.6 volts. My question is pertaining to the possibility of water flooding the ...
- 11
0
votes
1
answer
699
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Can I use medical injection water to fill lead acid battery?
Can I use sodium chloride injection ip (0.9% W/V) instead of distilled water to fill a lead acid battery?
6
votes
4
answers
3k
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Is it possible for snow covering a car battery to drain the battery? [closed]
We had a snow/ice storm last night, and somehow the snow got into the engine area. Is it possible that the snow covering the battery was the case of draining the battery?
- 175
0
votes
3
answers
105
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What methods are there for storing electrical potential energy in water vapor? [closed]
for an engineering class I had to create an electrical energy storage device and I began thinking about thunderstorms (I think it was a cloudy day) and how they create lighting. I know it's not ...
- 31
0
votes
1
answer
134
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Avoid fire on a battery-powered device [closed]
I was trying to repair a battery-powered electric razor when I suspect there was a short-circuit.
The device started heating and it began smoking a bit so I took it and put it in a bowl full of water....
- 13
0
votes
1
answer
1k
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Power solenoid valve battery
I'm trying to make an Arduino controlled irrigation timer. My idea is to use an Arduino pro mini and a cheap solenoid valve, wired to a TIP120.
However, from my calculations, it's impossible to run ...
- 1
2
votes
3
answers
3k
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What can I replace copper with for my salt water battery?
I and my friends were trying to make a salt water battery, but we cannot find copper strips in our town. Is there any other electrode we can use to make our battery? We have aluminum foil (which is ...
- 121