Electrical resistors – Resistance value responsive to a condition
Patent
1997-04-21
2000-10-17
Easthom, Karl
Electrical resistors
Resistance value responsive to a condition
338 22R, 338 20, H01C 700
Patent
active
061338192
ABSTRACT:
A load-dependent, preventive fuse with an electronic ceramic (12) in a housing (11) from which connection leads (14) are led outwards to detect at least a first type of load to which a device to be monitored is subjected, in which fuse use is made of a ceramic material, hereinafter referred to as TDR ceramic (12), whose electrically insulating state changes as a function of time, being the first type of load, and as a function of a second type of load, to a semiconducting state, and as a result thereof, when a dc voltage U is applied to the TDR ceramic (12) via connection leads (14) an increase in current forms the activation criterion for the fuse, which criterion is fulfilled under predeterminable conditions and determines a desired operating time .tau..
REFERENCES:
patent: 3737724 (1973-06-01), Salge et al.
patent: 3805022 (1974-04-01), Kulwicki et al.
patent: 3878501 (1975-04-01), Moorhead et al.
patent: 3931602 (1976-01-01), Jlasko
patent: 3976854 (1976-08-01), Ishikawa et al.
patent: 4016521 (1977-04-01), Seybold
patent: 4068281 (1978-01-01), Harnden, Jr.
patent: 4770833 (1988-09-01), Hughes
patent: 5379022 (1995-01-01), Bacon et al.
"DC Electrical Degradation of Perovskite-Type Titanate: II, Single Crystals" R. Waser, J. Am. Ceram, Soc. 73 (6) 1654-62 (1990).
Comberg Albert
Waser Rainer
Easthom Karl
Franzblau Bernard
U.S. Philips Corporation
LandOfFree
Load-dependent preventive fuse does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Load-dependent preventive fuse, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Load-dependent preventive fuse will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-473263