"transformer" - key terms from Wikipedia

current transformer
electrical transformer
flyback transformer
frequency transformer
ideal transformer
isolating transformer
isolation transformer
leakage transformer
output transformer
planar transformer
practical transformer
resonant transformer
supply transformer
tesla coil transformer
toroidal transformer
transformer
transformer	circuit topology
transformer	designs
transformer	effect
transformer	emf
transformer	type
transformer	types
transformer	windings
voltage transformer
welding transformer