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.

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!