Naked Science Forum

General Science => General Science => Topic started by: i am bored on 13/11/2007 01:56:22

Title: is this even possible and it it is how long will this last
Post by: i am bored on 13/11/2007 01:56:22

http://vids.myspace.com/index.cfm?fuseaction=vids.individual&VideoID=21687487

A person is powering a t.v. with a AAA battery! Is this possible and if it is how long will it last, and what are the chances of anything blowing me to oblivion

Title: is this even possible and it it is how long will this last
Post by: techmind on 13/11/2007 13:13:31

I can't see the video right now.

If we're talking about a 14" television (something like 50W of power) then since an AAA battery has about 1000mAh at 1.2-1.5V, i.e. about 1WattHour - the theoretical maximum time it could run a TV set for would be about 1 minute. Even so I can't conceive any "simple" way to do this...

Title: is this even possible and it it is how long will this last
Post by: chris on 13/11/2007 22:09:38

It's crap. A domestic TV is set up for an AC supply (50Hz) at 240V (120V in the US). A paltry 1.5V DC AAA cell will not work.

Chris

Title: is this even possible and it it is how long will this last
Post by: techmind on 13/11/2007 23:21:47

Quote from: Nic_525 on 13/11/2007 01:56:22

http://vids.myspace.com/index.cfm?fuseaction=vids.individual&VideoID=21687487

A person is powering a t.v. with a AAA battery! Is this possible and if it is how long will it last, and what are the chances of anything blowing me to oblivion

I've now seen the vid and can absolutely assure you it won't work. The vid is a hoax.
As Chris says, any appliance will be expecting 240V AC and has no chance of working off 1.5V DC in that way. (Ok some appliances might work down to 100V if they auto-switch for the US market - but that's still way off 1.5V)