Quote:
Originally Posted by ashleyb4
Yea but omhs law! As voltage goes down aka the transformer the current goes up. TO make the power the same.
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No sorry it's not the same, if you pull 20amp from a 20 amp power supply it will not pull 20amp from the 240v end, more like 3-5amp, think about it you normally only get a 13amp fuse,trust me I've been an electronics engineer for 16 years. You are right that as the voltage goes down the transformer current goes up but it's the conversion between the two coils, the current draw on the 12v side is at say 20amp(max load) the load is a lot less on the other side because the voltage is a lot higher and if you go into switch mode power supply's it's even more complex
