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Jan 24, 2019 at 5:39 comment added user3064278 @Nick Alexeev Please update with your progress or success with above circuit. You have replaced MCP609 with LM324 OpAmp. They are surely different in specs. I was also trying to test same circuit with LM324. But got no Success and eventually thought that LM324 is not up to for the task. MCP609 will be must. Since your are talking for the same thing here, I wish to know weather you got it working? If you made any changes apart from App Note then pleas let me know. Thank You.
Apr 16, 2013 at 6:39 comment added Connor Wolf If you're lazy and/or have a four-wire RTD, you can always cheat and use an off-the-shelf instrumentation amplifier.
Apr 16, 2013 at 5:29 comment added miceuz I've built the design based on AN687 - github.com/Miceuz/reflow-oven-controller as fas as I understood it's single supply, you just have to select the opamp with a low offset voltage, like microchip's MCP609
Oct 18, 2012 at 8:19 comment added Connor Wolf As an aside, dragons are very bad for electronics. They tend to lead to scorched PCBs and overheated ICs. However, if you carefully train them, I hear they're great for solder-paste reflowing.
Oct 18, 2012 at 8:19 comment added Connor Wolf That's hilarious. I basically independently derived that exact current source topology for a project I was working on recently. I guess I'm doing something right!
Oct 18, 2012 at 3:01 history tweeted twitter.com/#!/StackElectronix/status/258764729990914049
Oct 18, 2012 at 2:10 history edited Nick Alexeev CC BY-SA 3.0
added 13 characters in body
Oct 17, 2012 at 23:21 answer added Michael Karas timeline score: 2
Oct 17, 2012 at 21:47 review First posts
Oct 17, 2012 at 22:03
Oct 17, 2012 at 21:42 history asked henrik.sorensen CC BY-SA 3.0