Positive characteristics thermistor device with a porosity occup

Details Positive characteristics thermistor device with a porosity occup Positive characteristics thermistor device with a porosity occup

1996-06-28

1998-08-04

Tso, Edward

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

H01C 710, H01C 713

Patent

active

057900116

ABSTRACT:
There is provided a positive characteristics thermistor device having excellent thermal breakdown characteristics. According to the present invention, a positive characteristics thermistor device has a positive characteristics thermistor element 1 and electrodes 2 and 3 formed on principal surfaces of the positive characteristics thermistor element 1. The positive characteristics thermistor element 1 includes an inner region 4 and outer regions 5 and 6 and a porosity occupying rate of the outer regions 5 and 6 is set higher than that of the inner region 4.

REFERENCES:
patent: 3644864 (1972-02-01), Hirsbrunner et al.
patent: 3958208 (1976-05-01), Blaha
patent: 4259657 (1981-03-01), Ishikawa et al.
patent: 5214738 (1993-05-01), Nakajima et al.
patent: 5245309 (1993-09-01), Kawase et al.
patent: 5380989 (1995-01-01), Ohkubo
Patent Abstracts of Japan, vol. 014, No. 082 (E-0889), 15 Feb. 1990, & JP 01 293502 A (Murata MFG Co Ltd), 27 Nov. 1989, (English Abstract).
Patent Abstracts of Japan, vol. 017, No. 310 (E-1380), 14 Jun. 1993 & JP 05 029104 A (Murata MFG Co Ltd), 5 Feb. 1993, (English Abstract).
Patent Abstracts of Japan, vol. 008, No. 242 (P-311), 7 Nov. 1984 & JP 59 116536 A (Matsushita Denki Sangyo KK), 5 Jul. 1984, (English Abstract).
Patent Abstracts of Japan, vol. 013, No. 431 (C-640), 26 Sep. 1989 & JP 01 167283 A (Honda Motor Co Ltd), 30 Jun. 1989, (English Abstract).
Patent Abstracts of Japan, vol. 015, No. 484 (C-0892), 9 Dec. 1991 & JP 03 208870 A (Oriental Sangyo KK), 12 Sep. 1991, (English Abstract).
H.T. Sun et al., "Porosification Effect on Electroceramic Properties," Key Engineering Materials, 1996, Trans Tech Publications, Switzerland, vol. 115, ISSN 1013-9826, pp. 167-180, XP000646633.
Shi-Mei Su et al., "Preparation of Porous BaTiO.sub.3 PTC Thermistors by Adding Graphite Porosifiers," Journal of The American Ceramic Society, Aug. 1994, USA, vol. 77, No. ISSN 0002-7820, pp. 2154-2156, XP000647760.

Affiliated with

Also associated with

Rating

Positive characteristics thermistor device with a porosity occup does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Positive characteristics thermistor device with a porosity occup, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positive characteristics thermistor device with a porosity occup will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1181835