hi All
I'm new to electronics and have a general question about transformers - would really appreciate a little assistance.
ok, so I understand that transformers can be used to step up voltage (and with this comes an accompanying step down in current). That figures and I can see how that works with Ohms law if resistance is theoretically consistent on both sides.
What I don't really understand probably stems from my lack of understanding of the concept of voltage. If voltage drives the current in a wire, when the voltage is stepped up, why doesn't it induce an accompanying increase in current flow? OK, so I also appreciate this is a physical impossibility as you would have gained some power and broken a fairly fundamental principle...i just don't quite get that a voltage can be high and current low if resistance stays the same.
The only analogy I could think that would clarify this for me was that the primary voltage might be akin to a motorbike pulling current along (fast but light push), and the secondary voltage becomes more like a bulldozer (slower but much stronger than the bike).
Am I on the right track, or am I missing something very basic?!
thanks in advance for any help here!
I'm new to electronics and have a general question about transformers - would really appreciate a little assistance.
ok, so I understand that transformers can be used to step up voltage (and with this comes an accompanying step down in current). That figures and I can see how that works with Ohms law if resistance is theoretically consistent on both sides.
What I don't really understand probably stems from my lack of understanding of the concept of voltage. If voltage drives the current in a wire, when the voltage is stepped up, why doesn't it induce an accompanying increase in current flow? OK, so I also appreciate this is a physical impossibility as you would have gained some power and broken a fairly fundamental principle...i just don't quite get that a voltage can be high and current low if resistance stays the same.
The only analogy I could think that would clarify this for me was that the primary voltage might be akin to a motorbike pulling current along (fast but light push), and the secondary voltage becomes more like a bulldozer (slower but much stronger than the bike).
Am I on the right track, or am I missing something very basic?!
thanks in advance for any help here!