Method for manufacturing hygristors

Details Method for manufacturing hygristors Method for manufacturing hygristors

1991-04-08

1993-12-28

Lusignan, Michael

Coating processes

Electrical product produced

Resistor for current control

29620, 427125, 4274301, B05D 512

Patent

active

052737772

ABSTRACT:
A method for manufacturing hygristors includes preparing a hygroscopic gel containing a substantially greater proportion of carbon than the prior art, and milling the gel for a period of at least 24 hours to produce a smooth mixture. Substrates are dipped into the milled gel at controlled rates to coat the substrates. The coated substrates are cured under controlled temperature and humidity. Adhesion of the coating is improved by the smoother mixture resulting from the longer milling time, and by the differences in components of the mixture compared to the prior art. Long term stability and dynamic range are both increased.

REFERENCES:
patent: 3930896 (1976-01-01), Takahama et al.
patent: 4352359 (1982-10-01), Larimore et al.
patent: 4849251 (1989-07-01), Tanaka

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