Regulated power supply for a solid state ignition system

Claim 1

An energy discharge system for supplying energy from a source of electrical energy to a spark discharge unit comprising a means to store energy, a discharge circuit having a controlled switch means to selectively discharge energy stored in said energy storage means into said spark discharge unit, a blocking oscillator to transfer energy from said source of electrical energy to said energy storage means, said blocking oscillator including an electronic switch means with an input terminal, output terminal, and a common input-output terminal, said output terminal and common input-output terminal connected in series with an inductive winding means and a resistive shunt to said source of electrical energy, feedback means for applying an input control voltage between said input terminal and said common input-output terminal to turn said electronic switch means on in phase with a voltage supplied to said inductive winding means from said source of electrical through said electronic switch means, means to remove said input control voltage between said input terminal and common input-output terminal in response to a preselected voltage level across said resistive shunt means thus turning off said electronic switch means thus transferring energy stored in said inductive winding means through a rectifying means to said energy storage means.