various embodiments of the invention as illustrated in fig1 amp 7 a component such as a transformer 10 is shown having an armature or electrically conductive container 12 for receiving a powderous material 14 and an internal coil 16 the internal coil 16 has an insulated coating of varnish or other suitable coating although the coil 16 is described as having the insulation mentioned it should be appreciated that other types of insulation may be utilized for example a suitable pliable varnish or other insulation product such as formvar may be utilized as well another example of an alternate coating could be polyimide the important point is that the coil 16 and each of the wires 16 c 16 e fig9 have an insulation 17 to insulate them from the material 14 both during and after compaction in the embodiment being described the powder 14 is preferably either a ferrite or iron powder or any other suitable magnetic powder material the powder 14 is situated in the container 12 and around the coil 16 the container 12 powder 14 and coil 16 are then placed inside another solenoid or energizing coil 18 as shown in fig7 as best illustrated in fig7 the invention comprises a power supply 20 coupled to the conductors 22 and 24 connected to the conductor 22 is a switch 26 which is also connected to a conductor 28 the conductor 28 and the conductor 24 have joined there between a capacitor 30 the conductor 28 is also connected to a switch 32 which is also connected to a conductor 34 the conductor 24 and the conductor 34 are connected to the solenoid or energizing coil 18 which.