TRANSFORMER FORMULAS

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To better understand the following formulas review the rule of transposition in equations.
A multiplier may be removed from one side of an equation by making it a division on the other side, or a division may be removed from one side of an equation by making it a multiplier on the other side.

1. Voltage and Current: Primary (p) secondary (s)
Power(p) = power (s) or Ep x Ip = Es x Is

A.	Ep =	Es x Is Ip	B.	Ip =	Es x Is Ep

C.	Is =	Ep x Ip Es	D.	Es =	Ep x Ip Is

2. Voltage and Turns in Coil:
Voltage (p) x Turns (s) = Voltage (s) x Turns (p)
or Ep x Ts = Es x Ip

A.	Ep =	Es x Ip Ts	B.	Ts =	Es x Tp Ep

C.	Tp =	Ep x Ts Es	D.	Es =	Ep x Ts Tp

A.	Ip =	Is x Ts Tp	B.	Tp =	Is x Ts Ip

C.	Ts =	Ip x Tp Is	D.	Is =	Ip x Tp Ts