In order that the rotor of the electric motor moves intermittently or abruptly, at least parts of at least individual pulses are blanked by superposition of {HEAD ~ a pulse interval} having {TAIL ~ a zero voltage} 
having
In order that the rotor of the electric motor moves intermittently or abruptly , at least parts of at least individual pulses are blanked by superposition of { HEAD ~ a pulse interval } having { TAIL ~ a zero voltage }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL