Measuring and testing – Simulating operating condition – Marine
Patent
1992-05-14
1995-08-22
Raevis, Robert
Measuring and testing
Simulating operating condition
Marine
333167, G01M 1500
Patent
active
054435501
ABSTRACT:
A noise removing apparatus wherein a .pi. filter is constructed by a pair of feedthrough ceramic capacitors and a lead for connecting the feedthrough ceramic capacitors to each other to improve the radio wave trouble resistance of an electronic equipment and remove a shielding casing. Electrodes are formed on the both sides of a dielectric plate having a plurality of through holes by plating or the like, the electrode on one side is divided into plural ones in correspondence to the number of the through holes, resist portions are formed on the electrode on the other side so as to be in one-to-one correspondence to the through holes to provide a plurality of feedthrough ceramic capacitors, and an arbitrary pair of electrodes on one side are connected to each other through an inductive lead passing through the associated through holes, thereby to construct a .pi. filter.
REFERENCES:
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patent: 4563659 (1986-01-01), Sakamoto et al.
patent: 4571561 (1986-02-01), Fujiki et al.
patent: 4675629 (1987-06-01), Sakamoto et al.
patent: 4782310 (1988-11-01), Saburi et al.
Uchiyama Kaoru
Yoneda Hiroshi
Hitachi , Ltd.
Hitachi Automotive Engineering Co. Ltd.
Raevis Robert
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