Most common modern resistors are made out of either a carbon metal or metal oxide film. Since resistor type plugs actually resist some of the spark energy non resistor type plugs actually deliver a more powerful spark. Plug Studio Ngk Autolite Copper Resistor Spark Plug Ngk Spark Plugs Resistor Type Brhs Short Thread It is generally a self supporting screen or shield placed a short distance from an open fireplace flame. Spark resistor . Resistors can be constructed out of a variety of materials. Most resistor spark plugs use a monolithic resistor generally made of graphite and glass materials to filter the electrical voltage as it passes through the center electrode. In these resistors a thin film of conductive though still resistive material is wrapped in a helix around and covered by an insulating material. Non resistor spark plugs deliver a...
