ECS EQUIPMENT RELIABILITY THROUGH WETTING CURRENT

This disclosure describes techniques for increasing wetting current for an electromechanical switch. In one example application, an aircraft may include one or more valves used to control the temperature of aircraft interior. The valves may include one or more valve position switches to indicate cer...

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Bibliographische Detailangaben
Hauptverfasser:	Castellanos, Estevan, Agnis, Amber, Kang, Alan, Kumagai, Gary
Format:	Patent
Sprache:	eng
Schlagworte:	AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING COSMONAUTICS DECODING ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS PARACHUTES PERFORMING OPERATIONS RELAYS SELECTORS TRANSPORTING
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Beschreibung
Zusammenfassung:	This disclosure describes techniques for increasing wetting current for an electromechanical switch. In one example application, an aircraft may include one or more valves used to control the temperature of aircraft interior. The valves may include one or more valve position switches to indicate certain valve positions, e.g. fully open, fully closed, fifty percent open, and so on. In some examples, the valve position switches may receive current at electromechanical contacts of the switch that is less than the wetting current. The techniques of this disclosure provide additional wetting current at the time the switch contacts close to improve reliability of the valve position switches. In some examples, an analog to digital converter circuit may be configured to provide the additional wetting current to the switch.