tv, crt v. lcd

Thomas-the-Terrano2 · 12-03-2009, 11:46

just checked our new 16" lcd bought for use in 'van, its mains only rated 50W.
plan is to use on hook up or via an invertor off 'van's battery.

checked old tv wiitch is a boxy vcr combi of 10" screen, states on panel is 240V,
12V 50W.

Is Wattage constant then as would have thought lcd would use less power than
the old crt unit. LCD seems high as pc's 19" lcd is rated at 42W.

Suppose the lower voltage will need more current.

Power = Current x Voltage

thinking 50W / 240V = 0.21A 50W / 12V = 4.2A

was concerned tv flattened battery at weekend but suspect was over use of
blown heating really, any one know what a blower is rated at.

lacroupade · 12-03-2009, 16:55

Quote:

Originally Posted by Thomas-the-Terrano2

any one know what a blower is rated at.

Guess it depends whats generating the heat...typical desk fan is only 50-60watts so can't imagine blower fan would be much different?

Thomas-the-Terrano2 · 12-03-2009, 17:03

just found in CC guidebook, on mains 4.3 to 8.7 Amp presume including
heating element, on 12V gives 1.5A just for blowing, also tv@3.5-4A
as per my maths. Cassette flush 2.3A, just as well only occasional
and no fun when battery flat as no manual option! - well apart from
jug of water...

lacroupade · 12-03-2009, 18:47

solar it is then...

Thomas-the-Terrano2 · 12-03-2009, 19:10

solar panels anyone? seen a one in a suitcase design, about £100 gives 10Ah
charging ability. should keep battery topped up when no hook up.

(RIP) PLANK · 12-03-2009, 20:19

I have never had any success with solar panels i do have a few and they dont see to be much use.

I have a 15 lcd tv with builot in freeview (ALDI £159) it runs from a 12v power pack so easy to use on a leisure battery too

and recently i have aquired a small (9inch?) DVD palyer with a flip up screen laptop style, this is brilliant uses next to no power at all! it does make good background noise when the littel un is asleep, and keeps her quiet when she is not, without draining the battery too much or needing to run the generator!

Paul · 12-03-2009, 20:36

Quote:

Originally Posted by Thomas-the-Terrano2

solar panels anyone? seen a one in a suitcase design, about £100 gives 10Ah
charging ability. should keep battery topped up when no hook up.

Was talking about them over the weekend, almost everyone said the same as Plank, ok for slowly keeping the l/batt topped up & thats about it,one van had one on the roof that had cost almost £400

and was not alot of use he said..

12-03-2009, 11:46	#1
Thomas-the-Terrano2 Moderator Join Date: Dec 2004 Location: Hackenthorpe Sheffield Vehicle: Terrano2 R20 lwb 2.7TDi Posts: 5,234	tv, crt v. lcd just checked our new 16" lcd bought for use in 'van, its mains only rated 50W. plan is to use on hook up or via an invertor off 'van's battery. checked old tv wiitch is a boxy vcr combi of 10" screen, states on panel is 240V, 12V 50W. Is Wattage constant then as would have thought lcd would use less power than the old crt unit. LCD seems high as pc's 19" lcd is rated at 42W. Suppose the lower voltage will need more current. Power = Current x Voltage thinking 50W / 240V = 0.21A 50W / 12V = 4.2A was concerned tv flattened battery at weekend but suspect was over use of blown heating really, any one know what a blower is rated at. __________________ M6YTB / 20YTB '60' 2010 Ford C Max Zetec 1.6i, black '56' 2006 Jeep Grand Cherokee 3.0TD, silver 2021 Bailey Pegasus Grade SE Turin caravan Smile, its more likely to confuse. One Life, Don't Just Live It, Drive a Nissan, or ...... a Jeep. Owner of Nissan 4x4s 2005 to 2019, and maybe in the future too!

12-03-2009, 17:03	#3
Thomas-the-Terrano2 Moderator Join Date: Dec 2004 Location: Hackenthorpe Sheffield Vehicle: Terrano2 R20 lwb 2.7TDi Posts: 5,234	just found in CC guidebook, on mains 4.3 to 8.7 Amp presume including heating element, on 12V gives 1.5A just for blowing, also tv@3.5-4A as per my maths. Cassette flush 2.3A, just as well only occasional and no fun when battery flat as no manual option! - well apart from jug of water... __________________ M6YTB / 20YTB '60' 2010 Ford C Max Zetec 1.6i, black '56' 2006 Jeep Grand Cherokee 3.0TD, silver 2021 Bailey Pegasus Grade SE Turin caravan Smile, its more likely to confuse. One Life, Don't Just Live It, Drive a Nissan, or ...... a Jeep. Owner of Nissan 4x4s 2005 to 2019, and maybe in the future too!

12-03-2009, 19:10	#5
Thomas-the-Terrano2 Moderator Join Date: Dec 2004 Location: Hackenthorpe Sheffield Vehicle: Terrano2 R20 lwb 2.7TDi Posts: 5,234	solar panels anyone? seen a one in a suitcase design, about £100 gives 10Ah charging ability. should keep battery topped up when no hook up. __________________ M6YTB / 20YTB '60' 2010 Ford C Max Zetec 1.6i, black '56' 2006 Jeep Grand Cherokee 3.0TD, silver 2021 Bailey Pegasus Grade SE Turin caravan Smile, its more likely to confuse. One Life, Don't Just Live It, Drive a Nissan, or ...... a Jeep. Owner of Nissan 4x4s 2005 to 2019, and maybe in the future too!

12-03-2009, 18:47	#4
lacroupade Senior Member Join Date: Jan 2009 Location: All hail to the Glove of Love... Posts: 9,212	solar it is then...

12-03-2009, 20:19	#6
(RIP) PLANK Senior Member Join Date: Mar 2006 Location: Central England, in the Heart of the Black Country Vehicle: T2 2004 TDI SE LWB Posts: 7,740	I have never had any success with solar panels i do have a few and they dont see to be much use. I have a 15 lcd tv with builot in freeview (ALDI £159) it runs from a 12v power pack so easy to use on a leisure battery too and recently i have aquired a small (9inch?) DVD palyer with a flip up screen laptop style, this is brilliant uses next to no power at all! it does make good background noise when the littel un is asleep, and keeps her quiet when she is not, without draining the battery too much or needing to run the generator!