Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Electronics Wizards: If a Transformer turns 120v to 12v with 80watts how much energy?

240meowth · 01-13-2014, 06:00 PM

Hello, new here.

Okay, so this question has been blowing my mind for a long long time, and never knew who/where to ask I figure we have enough gurus here to give me some kind of insight.

If a transformer or adapter converts 120V AC to 12V DC rated at 80 watts and you only plug in a 5 watt bulb in, does the extra 75 watts go to waste or what?

01-13-2014, 06:00 PM	#1
240meowth Nissanaholic! Join Date: Dec 2001 Location: torrance, ca Age: 41 Posts: 2,407 Trader Rating: (4)	Electronics Wizards: If a Transformer turns 120v to 12v with 80watts how much energy? Hello, new here. Okay, so this question has been blowing my mind for a long long time, and never knew who/where to ask I figure we have enough gurus here to give me some kind of insight. If a transformer or adapter converts 120V AC to 12V DC rated at 80 watts and you only plug in a 5 watt bulb in, does the extra 75 watts go to waste or what? __________________