Spark plug tester ignition system

Details Spark plug tester ignition system Spark plug tester ignition system

F - Mech Eng,Light,Heat,Weapons

02

P

324/16

F02P 17/00 (2006.01) G01M 19/02 (2006.01)

Patent

CA 1057822

ABSTRACT OF THE DISCLOSURE An improved high voltage pulse power supply for a spark plug test fixture. AC line voltage is applied through a voltage step-down transformer, a half wave rectifier and an electronic switch to the primary winding of a conventional ignition coil. During the rise time of positive half cycles, the rectified voltage is applied through the electronic switch to the igni- tion coil primary. As the positive half cycle begins to fall towards the zero crossover, the electronic switch is opened. The magnetic field collapse in the ignition coil produces a high voltage negative pulse which is applied to a spark plug under test. The peak voltage of the negative pulse is ad- justed by controlling the peak current in the ignition coil primary.

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