On Fri, 15 Oct 2010 07:44:48 -0700, Stephen Trapani
wrote:

Hey, thanks Rick!

Just for jollies I looked at the back of my 42" home HDTV (plasma) and
it said 387watts, so do I have it right that since watts = amps/volts,
this TV will consume 387/120 = 3.2amps , so 3.2 amphours per hour?

Stephen

That's correct. 3.2 Amps at 120VAC, but using the 10% rule, that's
38.7 Amps at 12V through an inverter! Or 32 Amps at 12V if the
inverter were 100% efficient.

The smaller the TV, the lower it's Wattage. As I recall our 16" LCD
was 40 Watts, so about 4 Amps at 12V through the inverter.

Rick

Rick Morel wrote:
On Fri, 15 Oct 2010 07:44:48 -0700, Stephen Trapani
wrote:

Hey, thanks Rick!

Just for jollies I looked at the back of my 42" home HDTV (plasma) and
it said 387watts, so do I have it right that since watts = amps/volts,
this TV will consume 387/120 = 3.2amps , so 3.2 amphours per hour?

Stephen

That's correct. 3.2 Amps at 120VAC, but using the 10% rule, that's
38.7 Amps at 12V through an inverter! Or 32 Amps at 12V if the
inverter were 100% efficient.

The smaller the TV, the lower it's Wattage. As I recall our 16" LCD
was 40 Watts, so about 4 Amps at 12V through the inverter.

Rick




As I recall the DC power brick for my laptop is rated 18 watts.

1(+/-) Amp



--

Richard Lamb