Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting – per se – of an ac input to corresponding dc at an...
Patent
1993-04-12
1994-11-22
Wambach, Margaret Rose
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Converting, per se, of an ac input to corresponding dc at an...
328 3, 327509, 327 74, 327 77, G08B 1318
Patent
active
053672658
ABSTRACT:
A moisture-sensing circuit for a clothes dryer separates the moisture-sensing and timing functions in a way that minimizes undesirable interaction and reduces effects of tolerances in components, temperature, and supply-voltage. Separate comparators are provided for (1) the resistance of the moisture sensor as compared with a first threshold and (2) the time since occurrence of the most recent moisture signal that exceeded the first threshold, as compared with a second threshold representing a predetermined delay.
REFERENCES:
patent: 4419627 (1983-12-01), Schmelzer
patent: 4449188 (1984-05-01), Unoguchi et al.
Eaton Corporation
Johnston Roger A.
Wambach Margaret Rose
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