Ányos Jedlik's early electric motor

Background. Ányos István Jedlik (1800–1895) was a Hungarian inventor, engineer, physicist, and Benedictine priest. He is considered by Hungarians and Slovaks to be the unsung father of the dynamo and electric motor. His work in the late 1820s laid the groundwork for practical direct current motors, though his contributions were recognized later due to delayed reporting.

Construction and Demonstration. At the grammar school of Győr in 1827, Jedlik began experimenting with electromagnetic rotating devices called lightning-magnetic self-rotors. In 1828, he demonstrated a device containing the stator, rotor, and commutator, the three main components of practical direct current motors. The first electromotor built in 1828 and his operating instructions are preserved at the Museum of Applied Arts in Budapest.

Priority and Uncertainty. Jedlik only reported his invention decades after its construction, leading to uncertainty about the true date, which is estimated as late December 1827 or early January 1828. This delay complicates claims of absolute priority, although he is credited as the unsung father of the dynamo and electric motor.