Rush current suppression circuit

Details Rush current suppression circuit Rush current suppression circuit

1996-12-04

1998-06-09

Young, Brian K.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

361 58, 361111, 338 22R, H02H 504

Patent

active

057644705

ABSTRACT:
A rush current suppression circuit suppresses a peak value of a rush current flowing into a heater. The rush current suppression circuit includes a parallel circuit formed by a positive-characteristic thermistor and a negative-characteristic thermistor. The negative-characteristic thermistor has a resistance at a normal temperature higher than that of the positive-characteristics thermistor. The parallel circuit is connected in series to the heater.

REFERENCES:
patent: 4937696 (1990-06-01), Yoshino et al.
patent: 5379022 (1995-01-01), Bacon et al.
patent: 5596308 (1997-01-01), Bock
European Search Report, Dec. 3, 1997.
07045356, Tetsuo, Patent Abstracts of Japan, Feb. 14, 1995.
WO 94/00963, Penglase, PCT Document, Jan. 6, 1994.
Handbook of Modern Electronics and Electrical Engineering, Dec. 1981.

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