Composite function element and process for producing the same

Details Composite function element and process for producing the same Composite function element and process for producing the same

1981-05-21

1984-10-02

Nussbaum, Marvin L.

Wave transmission lines and networks

Automatically controlled systems

Impedance matching

333172, 357 10, H03H 102, H03H 724

Patent

active

044750919

ABSTRACT:
This invention relates to a composite function element which includes a high resistance thin film layer containing the constitutional elements of a perovskite type oxide and specified impurity elements at the grain boundary of a sintered body, said sintered body comprises an agglomerate of n type semiconductor particles and to a process for producing said composite function element. The composite function element has a composite function such that it acts as a varistor passing high voltages at a high voltage and as a capacitor passing the currents of abnormal frequency zone at a low voltage, so that the functions of two elements, a varistor and a capacitor, can be fulfilled simultaneously with only one element. Therefore, its extensive application in uses such as, for example, prevention of erroneous operation of microcomputer-controlled instruments can be expected.

REFERENCES:
patent: 3299332 (1967-01-01), Saburi
patent: 3386856 (1968-06-01), Noorlander
patent: 3441517 (1969-04-01), Brauer et al.
patent: 4131903 (1978-12-01), Schmelz et al.

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