First of all, I am not an Electronics guy originally. I love to spend time with Electronics. May be this is a basic question. But I am struggling to find the answer on internet.
I am from India and I often see that locally manufactured step-down Transformers are not sold with Volt-Ampere ratings. Instead they specifically mention following parameters:
- Input Voltage
- Output Voltage
- Max Output Current
Well, I know how to calculate VA from those params :) But my question is how do they control/determine what is the max allowed output current? I am assuming that following is the principle
Assume, V1=220VAC V2=12VDC
Since, V1/V2 = I2/I1 = N1/N2
N1/N2 = 18.333
N1=3666.6, N2=200 [Less turns on Primary/Secondary = Higher Current Output]
N1=9166.5, N2=500 [More turns on Primary/Secondary = Lower Current Output]
Is this understanding correct? If yes, then my last question is, how does this theory influences the gauge of the primary and secondary wires?