Systems and methods for filtering radio frequencies from a signal of a thermocouple and controlling a temperature of an electrode in a plasma chamber

A circuit including a first filter assembly and a controller. The first filter assembly is implemented on a printed circuit board. The first filter assembly includes a first filter and a second filter. The first filter receives a first signal from a first sensor, prevents passage of a first portion...

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Bibliographische Detailangaben
Hauptverfasser:	Thilagaraj, Mohan, Burkhart, Vince, Ramsayer, Christopher
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY PLASMA TECHNIQUE PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS
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Beschreibung
Zusammenfassung:	A circuit including a first filter assembly and a controller. The first filter assembly is implemented on a printed circuit board. The first filter assembly includes a first filter and a second filter. The first filter receives a first signal from a first sensor, prevents passage of a first portion of the first signal and outputs a second signal. The first portion of the first signal is at a first radio frequency. A second portion of the first signal is indicative of a first temperature of a first electrode in a plasma chamber. The second filter receives the second signal and prevents passage of a portion of the second signal. The portion of the second signal is at a second radio frequency. The second radio frequency is less than the first radio frequency. The controller adjusts a temperature of the first electrode based on an output of the second filter.