Patents Assigned to Theta-Corporation
  • Optically coupled electric power relay
    Patent number: 4296331
    Abstract: The present invention relates to power relays and more particularly to optically coupled, zero-voltage switching electric power relays. Operating from logic-level signals, the device can control loads of several amperes or more at 60-400 Hz line voltages of at least 240 VAC. The invention introduces meaningful superior performance characteristics while at the same time incorporating unique cost reduction methods.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: October 20, 1981
    Assignee: Theta-Corporation
    Inventor: Edward T. Rodriguez