Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1991-07-23
1993-06-15
Walberg, Teresa J.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219501, H05B 102
Patent
active
052201562
ABSTRACT:
A control system and circuit has a positive feedback characteristic but is nonetheless stable. Stability is achieved by superimposing a negative feedback loop with a short time constant and a positive feedback loop with a long time constant. The system and circuit are useful in situations where the sensor and the controlled variable (e.g. a heater) are well-coupled.
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Cox & Company, Inc.
Jay Mark H.
Walberg Teresa J.
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