When I am using a device which has a transformer and I switch off the device but leave the transformer plugged in (it is still warm), is this using the same amount of electricity as if the device was still on?
2006-09-06 19:48:47 · 3 answers · asked by XT rider 7 in Consumer Electronics ➔ Other - Electronics
What you have felt is self heating, caused by Eddy Currents in the transformer.
Contrary to what some people say, a transformer is not 100% efficient. A very small amount of energy is used magnetizing and demagnetizing the iron of the core 100 (or 120) times per second. This energy is given off as heat.
It is not the same amount though, it is considerably smaller, not enough to worry about.
2006-09-07 09:44:42 · answer #1 · answered by Aurthor D 4 · 0⤊ 0⤋
Of course not, it does not use the same power when the device is pluged off... it uses the power that is defined by the active resistance of the first choke of transformer.. it's not much but depends on the transformer
2006-09-06 20:02:32 · answer #2 · answered by Ugi 2 · 0⤊ 0⤋
It uses no electricity when it is turned off. I speak the truth.
It does allow electricity to be wasted doesn't it? If it is still warm when you leave it in, then it has got to have current running through it. But lesser electricity is being used.
2006-09-06 19:57:50 · answer #3 · answered by lkraie 5 · 0⤊ 0⤋