Device for closing or interrupting an electric alternating curre

Details Device for closing or interrupting an electric alternating curre Device for closing or interrupting an electric alternating curre

1977-11-28

1980-09-30

Shoop, William M.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 13, H02H 722

Patent

active

042258952

ABSTRACT:
The present invention relates to a device which is created in such a way that it can close or interrupt an electric alternating current arising on a line at its zero passage. The current mentioned is provided for the feed of energy to a load. The closing or interrupting of the alternating current arising on the line takes place through an activation of an electronic switching means which is switched parallel to a contact that is contained in a mechanical switching means. The contact is in closed position during the load and at the beginning of a short persistence time after the switching in of the electronic switching means and before a brief persistence time before the interruption of the electronic switching means. The switching is instantaneous because the electronic switching means is always activated by a separate energy source.

REFERENCES:
patent: 3237030 (1966-02-01), Coburn
patent: 3365654 (1968-01-01), Johnston
patent: 3558910 (1971-01-01), Dale et al.
patent: 3646355 (1972-02-01), Ireland et al.
patent: 3982137 (1976-09-01), Penrod
patent: 4074333 (1978-02-01), Murakami et al.
RCA Silicon Power Circuits Manual, Technical Series SP-50, p. 236, Radio Corporation of America, 1967.

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