Influence of the control signal input in pinhole device

Miniaturization of magnetic devices is very important in miniaturizing electronic devices. We have studied various types of micro-thin film inductors and transformers. These inductors and transformers are now being prepared by thin film techniques. Miniaturization and integration of magnetic devices make high frequency operation possible. We have proposed a new type of thin film transformer made using a strip line and an amorphous CoNbZr film and it was called a "pinhole device". The output voltage of thin film transformer could be controlled either the center hole current, an external magnetic field. In this paper, the change of the output voltage when the control signal was applied to the center hole will be described.