|
Some of these posts are very old and might contain outdated information. You may wish to search for newer posts instead.
|
Zwieback0
Baby Bread


Registered: 08/23/02
Posts: 3,473
|
Lighting
#5502374 - 04/11/06 04:25 AM (17 years, 9 months ago) |
|
|
Hey everyone! I haven't posted in about 2 years but here I am again and I need your fellow Shroomery members help...
Here's the problem: Bob is trying to get light into his closet to initiate pinning. He wants to be as descrete as possible, so running an extension cord into the closet is out of the question. Powering a light bulb by a battery seems costly. What other alternatives does he have?
He wants to power a light bulb with salt water (ions), but a special apparatus is needed to do this...does anyone know where he can get one or how to make it?
Thanks, Z
|
Akamatsu
Seeker

Registered: 01/29/06 
Posts: 285
Loc: Australia
Last seen: 2 years, 1 month
|
|
Unless you had a massive amount of salt water, you wouldn't be able to generate enough power to provide adequate lighting. You could get an old (or new) car battery to provide you with a 12V power source. Use a cheap charger to charge it every few days.
|
Cubenisseur
Mad Props


Registered: 12/04/05
Posts: 1,392
Loc: Indian Land
Last seen: 13 years, 10 months
|
Re: Lighting [Re: Akamatsu]
#5502460 - 04/11/06 05:51 AM (17 years, 9 months ago) |
|
|
Get a thin power cord and drill a small hole through the baseboard/floor area into the closet?
|
creamcorn
mad scientist


Registered: 03/13/06
Posts: 2,962
|
|
Check around for some of the LED lighting teks... too early in the morning to give specifics but you can wire up some led's and use a lantern battery (they look like a 9V sorta, but more the size of two packs of cigarettes side by side)... that will run for weeks because LED power consumption is super low. Probably don't have to go as far overboard with as many LED's as I've seen as they're bright little buggers and you can put it all together on the cheap with parts from Radio Shack.
I've also seen people use those bubble lights that stick to a surface with tape... the ones they used to sell on infomercials, they're battery powered too and not as efficient as LEDs but you'll make it through the pinning stages on only a few battery changes.
|
Zwieback0
Baby Bread


Registered: 08/23/02
Posts: 3,473
|
Re: Lighting [Re: Akamatsu]
#5504628 - 04/11/06 05:58 PM (17 years, 9 months ago) |
|
|
You don't have to have massive amounts of salt water. Bob's physics teacher had an apparatus where he dipped the end into a small beaker of water...he then sprinkled a little amount of salt and the light bulb lit up.
|
Akamatsu
Seeker

Registered: 01/29/06 
Posts: 285
Loc: Australia
Last seen: 2 years, 1 month
|
|
If it worked so well, don't you think we would be using it in more applications then just demonstrations at school? http://www.miniscience.com/projects/airbattery/
Depending on the valency of the anode and cathode used, the amount of current you can generate is tiny. Maybe a few tens of milliamps, not nearly enough to run a decent sized light. A 500ml beaker similar to the one that your friend?s physics teacher used might be the equivalent of a AAA battery.
|
splifner180
Student


Registered: 03/24/06
Posts: 1,288
Loc: USA, East Coast
Last seen: 1 year, 3 months
|
Re: Lighting [Re: Akamatsu]
#5504791 - 04/11/06 06:42 PM (17 years, 9 months ago) |
|
|
I'd agree with creamcorn on the LED suggestion. They draw so little power. Hit up Radio Shack for a rechargable battery charger (I believe some come with the batteries themselves) and an LED flashlight.
I've even seen LED flashdlights where successive pushes of the power button lights up more of the lights which could be useful. I don't know if RatShack has those.
splif
-------------------- First Grow: Ecuador -> LC -> HPoo/Straw -> Monotub Build a Do-It-Yourself Magnetic Stirrer in thirty minutes with no money.
|
Zwieback0
Baby Bread


Registered: 08/23/02
Posts: 3,473
|
Re: Lighting [Re: Akamatsu]
#5505168 - 04/11/06 07:58 PM (17 years, 9 months ago) |
|
|
It would probably be more readily used but it is impractical. Just imagine, every light bulb powered with a bucket of salt water under it. I don't know how to explain it, but the experiment was performed by a world-renound physicist. Everyone was blown away like I was. Maybe its really expensive to make the apparatus that separates the positive and negative charges in the water because thats what needs to happen in order for it to light up. IDK.
|
trauma47645
The MushroomKing


Registered: 02/09/06
Posts: 771
Loc: Somewhere in this place c...
|
|
you can get a greater current flow from a lemon, or any decently strong acidic solution.. All you need is a copper cathode and a zinc anode.. they run small science fair clocks on one lemon for a couple days so i imagine you could run a couple leds off a couple lemons hooked up through some diodes into some small capacitors hooked in series to the leds.. should have enough power then..
|
|
|
You cannot start new topics / You cannot reply to topics HTML is disabled / BBCode is enabled
Moderator: Shroomism, george castanza, RogerRabbit, veggie, mushboy, fahtster, LogicaL Chaos, 13shrooms, Stipe-n Cap, Pastywhyte, bodhisatta, Tormato, Land Trout, A.k.a 547 topic views. 20 members, 175 guests and 29 web crawlers are browsing this forum.
[ Show Images Only | Sort by Score | Print Topic ] |
|