I would like to know the power(in watts) of a transformer
that has an
13.5 Volts and 1000 ma (milliamps)
I intend to purchase this unit to drive a TV set in my camper. The TV
draws approx. 80 watt.
Thanx much. Charlie A.
The formula for conversion is W = V * A.
This means W = 13.5 * 1000/1000 = 13.5 Wats.
Since you need 80 watts, you will burn out your transformer very quickly if
you draw that much power from it. You really need a transformer that is
capable of delivering 7 Amps or more. Most transformers can't do this.
The power from the transformer is the voltage (13.5V)times the current
(1000ma or 1 Amp). This is 13.5 Volts, this would not be enough power for
your TV, the current would be sufficient however. The current drawn by the
TV at 120V is 80/120 or 0.67 amps (670ma).
To find the Wattage the formula is voltage times the current. So 1
Amp times 13.5 volts is 13.5 Watts.
This transformer isn't going to do it. The power (in Watts) is the product
of the output voltage (in V, 13.5 V for you) and the output current (in Amps,
in your case 1.000). This transformer will only handle 13.5 V.
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Update: June 2012