TRANSFORMER THEORY TransformersExample 2: An iron core transformer with a primary voltage of 240 volts has 250 turns in theprimary and 50 turns in the secondary. Find the secondary voltage.Solution:V_{P}V_{S}N_{P}N_{S}Next, solve for V_{S}.V_{S}N_{S}N_{P}V_{P}V_{S}50250240 voltsV_{S}48 voltsExample 3: A power transformer has a turns ratio of 1:4. If the secondary coil has 5000 turnsand secondary voltage is 60 volts, find the voltage ratio, V_{P}, and N_{P}.Solution:VRTRVR1:4V_{P}V_{S}VR1:414V_{P}14V_{S}60415 voltsTRN_{P}N_{S}14N_{P}14N_{S}500041250 turnsES-13 Page 6 Rev. 0

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