device and capacitor are installed inside the plug hole so that radiation noises can be suppressed further fig3 a and 3b are views showing a configuration of an ignition coil apparatus 102 for high frequency discharge according to the second embodiment of the invention referring to fig3 a and 3b because the circuit configuration and the components installed inside the ignition coil apparatus 102 are the same as those in the first embodiment above the description will not be repeated and only a difference will be described in detail in the second embodiment as is shown in fig3 a a resistance device 115 b and a capacitor 116 b are installed inside a plug hole 301 the capacitor 116 b is of a cylindrical shape as is shown in fig3 b one end of an electrode is an inner surface 302 a of the cylinder and the other end is an outer surface 302 b of the cylinder one end of the resistance device 115 b is connected to the secondary coil 112 and the other end is inserted into a terminal 206 and electrically connected to the terminal 206 the terminal 206 is inserted into the cylinder forming the capacitor 116 b and electrically and physically comes into contact with the electrode 302 a on the inner surface in addition the terminal 206 is installed so as to also come into contact with a spring 204 and a sleeve 205 b the electrode 302 b on the outer surface of the cylinder.