A single phase two speed electric motor including a coil-winding system composed by only two distinct statoric coil-windings, assembled upon a single magnetic-plates nucleus, for utilization in electric motors supplied by single-phase power; the motor is of the permanent capacitor type, operating in two speeds (low and high) and in both rotation directions (clockwise and counterclockwise), where the coil-windings alternate as principal and auxiliary, that which is in series with the capacitor being defined as the auxiliary one.