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1. National Grid
the current we recieve from the national grid is A.C
why then don't objects turn on and off again as the current passes through the zero point?
(current follows a sinosidual curve)
2. Re: National Grid
Its magic.
3. Re: National Grid
(Original post by marsman13)
Its magic.
???
4. Re: National Grid
(Original post by ilovemath)
the current we recieve from the national grid is A.C
why then don't objects turn on and off again as the current passes through the zero point?
(current follows a sinosidual curve)
Because they operate on DC and have built in transformers (to step down the voltage) and a rectifier and smoothing circuit (capacitor) to change it to DC.

You asked a question related to this recently.
5. Re: National Grid
(Original post by Stonebridge)
Because they operate on DC and have built in transformers (to step down the voltage) and a rectifier and smoothing circuit (capacitor) to change it to DC.

You asked a question related to this recently.
I was not aware of the connection
thanks for this
6. Re: National Grid
(Original post by ilovemath)
I was not aware of the connection
thanks for this
By the way, the stuff that does work on AC, an electric fire for example, doesn't notice the change in the current because it gets hot whichever way the current goes. The change is so rapid, at 50Hz, that the fire doesn't have time to cool down between cycles.
7. Re: National Grid
(Original post by Stonebridge)
By the way, the stuff that does work on AC, an electric fire for example, doesn't notice the change in the current because it gets hot whichever way the current goes. The change is so rapid, at 50Hz, that the fire doesn't have time to cool down between cycles.
thanks for this
I guess with a Frq this fast it would be impossible for the circuit to change or for us to notice it anyways