How many watts does an average (50 inch) plasma t.v. take, compared to a 27in. regular t.v.?

Question

not LCD....just a regular t.v...I heard LCD t.v's take less watts that the regular t.v..now I'm wondering if a plasma t.v. is a big wattage sucker.

Answer 1

According a web site I found,  informal test showed a sony 27 inch crt tv using 100 watts while a samsung 50 inch plasma using 420 watts or 4 times as much.

http://probonostats.wordpress.com/2008/0...

Answer 2

Hello,

(ANS) This precise question came up on a recent radio 4 program called costing the earth.

a) Large Plasma TV screens consume MUCH more electricity in contrast to the same size LCD TV screens.

b) A 42inch Plasma TV consumes 200watts in contrast to a normal analogue TV of about 27inch consumes 2watts.

c) TV's on standby mode (plugged into the mains) consume MORE electricity than when they are switched on and being used. Which is why its best to switch the TV off at the wall or better still unplug the TV overnight.

Ivan

Answer 3

If you mean a cathode ray tube TV (CRT).  A CRT TV uses a lot of energy.  The initial power up takes a big jolt and from there it sustains itself while wasting more energy.  Think of it as a Incandescent light bulb, putting out heat.  When that wasted energy on heat could be used to help output more lumens.  I don't know much about plasmas because I don't think they will be around much longer, once laser diode TVs are developed that is.  Laser diode TVs are still being researched, but once created they will be as brilliant as a plasma and as long lasting as a LCD TV (liquid crystal display).  

To find out the wattage you need to use the equation P=I*E

"P" is equivalent to Power  "I" is equivalent to Current and "E" is equivalent to voltage.  "P" is expressed in Watts, "I" is expressed in Amps and "E" is expressed in Volts.  

Standard wall outlets put out about 120 Volts of Alternating current.  All you need to know is how much amps this unit consumes.  Look on the back of the TV and it should give you an amp reading.  Multiply this number by 120V and you should get your answer in Watts.  Keep in mind that Sometimes Amps are expressed in mAh (milli amperes)

So an old CRT TV would consume a lot more power compared to a LCD flat screen tv of the same size.  An LCD is energy efficient just like those weird Compact Flourescent Light bulbs.

Answer 4

I don't know the wattage but I do know that plasma tvs are very power hungry. So much so that they even throw heat. So the regualr tv would be alot lower. :)

Answer 5

a sony 50" plasma has the following power usage:

Power Consumption Stand by / Sleep   0.5 Watt

Power Consumption Operational    450 Watt

A samsung 50" projection TV:

Stand-by 3.4W

Power Consumption  166W

Please Note: a projection TV is not necessarily a "regular" TV, at 50" the original design of TV would not be suitable.

the original TV projects by using a cathode ray tube (CRT) which requires a minimum ration between screen size and TV depth. at 50" screen size the TV would need to be very deep and this makes standard CRT unusable at this TV size

PS: if you are in the UK (and this is the UK varient of yahoo answers) the above answer is incorrect, here in the UK (and in europe as a whole) we use 230V AC not 120V AC.

(we used to use 240v and europe used to use 220v but we synchronised to 230v as a compromise)