Ignition device for causing spark discharge of internal combustion engine` ignition plug, has connector with external connection terminals conducting current for control circuit section and provided with noble metal coat

摘要

The device has a transformer generating a high voltage at a secondary coil by conducting or interrupting a primary current flowing through a primary coil. A control circuit section controls the primary current depending on a control signal from outside. A connector has external connection terminals (31a, 31b, 32a, 32b) conducting a current for the transformer and the control circuit section, respectively, where only the terminals (32a, 32b) are provided with a noble metal coat (60).