Transformer Example - A Toy Train | Physics with Professor Matt Anderson | M24-14

Let's look at a specific example of a transformer, one that is typically used for model trains.
Physics with Professor Matt Anderson

[@douglasstrother6584]

A nice shock from a model railroad transformer, and arcing a screwdriver across the tracks are invaluable rites of passage!

[@yoprofmatt]

Agreed. Especially in the dark. Cheers, Dr. A

[@fizixx]

This is very straightforward. Nice example of how to use the turn-ratios to get to the voltages and currents.

[@yoprofmatt]

Yep. Just wind the coils and you're all set. Cheers, Dr. A

[@asaleemeadows]

(Ignoring efficiency loss...) The power is equal on both sides.... 120V x .2A = 24 watts, so you could solve for either Ps or Pp. So if the question is how much power does the train use in total, you'd have to factor in the Primary side, because the user of the train is paying the power company for what's on Primary, not Secondary. Love these videos!

[@yoprofmatt]

Great point, thanks.

[@BOBMAN1980]

Thanks a lot for this! In trying to study about these subjects, I find myself frequently encountering formulas for various purposes, but without any actual figures plugged in--and even understanding the essential math--they still seem like abstract functions when there's real life applications that can easily be used. V = I * R; I = V/R. etc. seem void of any meaning, and are harder to even memorize, without come kind of real-world context. Doing it this way makes almost makes it fun. Thanks, again!

[@yoprofmatt]

You're very welcome, and thanks for chiming in. I appreciate that. Cheers, Dr. A

[@chakarazam8836]

Thankyou teacher,☺️ Love it 😘

[@yoprofmatt]

Great to hear. Have a great day. Cheers, Dr. A