Patent ID: 7268655

Claim:
A distributorless ignition coil for use in an automotive type electrical system having a battery voltage and electrical ground, comprising: a single primary winding; at least first and second secondary windings in axial sequence to each other and surrounding the primary winding, each secondary winding being electrically connectable to a respective spark plug, each secondary winding being inductively couplable to the primary winding and configured to transform relatively lower voltage from the primary winding to relatively higher voltage for supply thereof to the spark plugs; a center tap terminal located between the first and second secondary windings, an end of each secondary winding proximal the center tap terminal being electrically connected to the center tap terminal; and a shield surrounding the secondary windings and electrically connected to the center tap terminal, the shield also configured to be electrically connected to one of: electrical ground, or battery voltage, when in use in an automotive type electrical system having a battery voltage and electrical ground.