Circuitry for maintaining an arc or spark across a spark gap for a desired length of time is described. A high-voltage, direct-current (dc) source is connected in series with a secondary winding of a high voltage, step-up transformer or coil and a spark gap. The high-voltage source is controlled by a solid state switch which is responsive to a timing device such as a set of ignition contact points or a magnetic pulse generator operating in synchronism with a spark ignition engine. The timing device also provides signals to a current switching circuit which interrupts current flow through a primary winding of the high-voltage coil at the prescribed time that a spark is desired at the spark gap. The control circuit may include both a switch and a multivibrator if the timer is of the pulse-generating magnetic type.

  • Supplemental Notes:
    • Government-owned invention available for licensing. Copy of application available NTIS.
  • Corporate Authors:

    Lewis Research Center

    National Aeronautics and Space Administration
    Cleveland, OH  United States  44135
  • Authors:
    • Birchenough, A G
  • Publication Date: 1975-6-3

Media Info

  • Pagination: 21 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00092700
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: PAT-APPL-583 485
  • Files: TRIS
  • Created Date: Nov 5 2002 12:00AM