Chris Meyer - Mentions » Interface Board http://chrismeyer.org/wordpress Mon, 09 Aug 2010 20:53:54 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 MAX6675 Thermocouple Amplifier EagleCAD http://chrismeyer.org/wordpress/2010/02/max6675-thermocouple-amplifier-eaglecad/ http://chrismeyer.org/wordpress/2010/02/max6675-thermocouple-amplifier-eaglecad/#comments Tue, 09 Feb 2010 21:44:26 +0000 Waterppk http://chrismeyer.org/wordpress/?p=282 I created a little SMT board for the MAX6675 thermocouple amplifier in EagleCAD if anyone out there is in need of a board.  It’s very simple layout but it is a bit noisy, definitely expect to average samples coming from this chip (/board?).  Other improvements would be adding a thermistor as the CJC (cold junction compensation) on the board so you can accurately offset the junctions at the board where you break the thermocouple wire and transition over to copper (which creates another TC junction unintentionally so you must compensate for it).

MAX6675 TC Amplifier Board and Schematic

MAX6675 TC Board Schematic and Board (and Panelized)

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