Electrical contactor

1. An electrical contactor comprising: a fixed electrical contact, a movable electrical contact, an AC dual-coil actuator having a drive coil drivable for opening and closing the movable and fixed electrical, and a power supply having a controller for outputting truncated-waveform drive pulses to the drive coil, and wherein the AC dual-coil comprises a feedback coil to induce a reverse flux to temper and stabilize a net flux, and a contact closing time of the movable electrical contact is controlled to shift to or adjacent to an AC load waveform zero-crossing point.

2. The contactor of claim 1 , wherein the controller controls a timing of an applied current based on a current waveform.

3. The contactor of claim 1 , wherein the controller controls a timing of an applied current based on an AC current waveform.

4. The contactor of claim 1 , wherein the controller controls a timing of an applied current based on a current waveform, whereby the truncated-waveform drive pulse has a half-cycle current waveform.

5. The contactor of claim 1 , wherein the controller controls a timing of an applied current based on a current waveform, whereby the truncated-waveform drive pulse is other than a half-cycle and full-cycle current waveform.

6. The contactor of claim 1 , wherein the controller controls a timing of an applied current based on a current waveform, whereby the truncated-waveform drive pulse has a quarter-cycle current waveform corresponding to peak load current.

7. The contactor of claim 1 , wherein the drive coil comprises a first coil and a second coil feedback connected to an original AC common center connection of the dual coil unit.

8. The contactor of claim 7 , wherein a reverse flux induced via the feedback connection in the feedback coil, thereby tempering and feedback stabilizing a net flux in the AC dual-coil actuator.

9. The contactor of claim 1 , wherein the truncated-waveform drive pulse coincides with the peak load current.

10. A method of limiting or preventing electrical contact bounce and arc duration, the method comprising the step of driving an AC dual-coil actuator to open and close electrical contacts of an electrical contactor, a drive pulse being applied to drive the AC dual-coil actuator having a truncated-waveform, a reverse flux is induced to temper and stabilize a net flux by a feedback coil of the AC dual-coil actuator, and a contact closing time of the movable electrical contact is controlled to shift to or adjacent to an AC load waveform zero-crossing point.

11. The method of claim 10 , wherein the truncated-waveform is based on a peak load current.

12. The method of claim 10 , wherein the truncated-waveform is a truncated AC waveform corresponding to peak load current.

13. The contactor of claim 10 , wherein the truncated-waveform drive pulse may be AC or DC.

14. The method of claim 10 , wherein the truncated-waveform drive pulse coincides with the peak load current.

15. A method of controlling electrical contact closing and opening delay, the method comprising the step of driving an AC dual-coil actuator to open and close electrical contacts of an electrical contactor, a drive pulse being applied to drive the AC dual-coil actuator having a truncated-waveform, a reverse flux is induced to temper and stabilize a net flux by a feedback coil of the AC dual-coil actuator, and a contact closing time of the movable electrical contact is controlled to shift to or adjacent to an AC load waveform zero-crossing point.

16. The method of claim 15 , wherein the truncated-waveform is based on a peak load current.

17. The method of claim 15 , wherein the truncated-waveform is a truncated AC waveform corresponding to peak load current.

18. The method of claim 15 , wherein the truncated-waveform is a truncated AC waveform truncated at the peak of the load current.

19. The contactor of claim 15 , wherein the truncated-waveform drive pulse may be AC or DC.

20. The method of claim 15 , wherein the truncated-waveform drive pulse coincides with the peak load current.