What is the difference between power transformers and pulse transformers?

Answer 1

A 'voltage transformer', together with a 'current transformer', belong to a class of Transformers called 'instrument transformers', whose purpose is to enable high voltages and currents to be safely measured by reducing their values to lower levels, while electrically-isolating these high voltages/currents from the measuring instruments. These transformers are also used to provide input to protective relays.

A 'power transformer' is a transformer used in the electricity transmission and primary distribution systems, whose function is to either step up generated voltages (11 - 25 kV in the UK) to transmission levels (400 kV in the UK), or to step down these high voltages at 'load centres', such as towns and cities.

Answer 2

Power transformer is step up or step down t/f while pulse transformer is a switch mode transformer with variable switching frequency depending upon requirement.