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Entry  Sun Feb 24 01:16:26 2013, tara, DailyProgress, RefCav, refcav and mount assembly photo(9).JPGphoto(8).JPG
    Reply  Mon Feb 25 01:02:58 2013, tara, DailyProgress, Vacuum, Heater for refcav heater.pngphoto(10).JPG
       Reply  Wed Feb 27 09:57:33 2013, tara, DailyProgress, TempCtrl, Heater for refcav 
          Reply  Thu Feb 28 09:12:22 2013, not tara, DailyProgress, TempCtrl, Heater for refcav 
             Reply  Wed Mar 6 15:44:26 2013, Zach, DailyProgress, TempCtrl, Heater for refcav 
Message ID: 1110     Entry time: Wed Mar 6 15:44:26 2013     In reply to: 1107
Author: Zach 
Type: DailyProgress 
Category: TempCtrl 
Subject: Heater for refcav 

Is there a reason you don't want to use a Daedalus board (see bunch of ATF entries here). There will need to be some modifications, but besides these minor things it sounds like exactly what you want.

The only major thing is that I stupidly picked the SO8 package version of the BUF634, which can only dissipate less than a watt. Using one of these nifty SO8-to-DIP converters, you can replace it with a TO-220 package and have several watts.

A particularly nice thing is that each board has two channels, if you're into that sort of thing.

Anyway, let me know. I can help you get started when I'm at Caltech later this month if you decide you want it. I need to finish setting up the one for the gyro, anyway.

Quote:

 To make a low noise current driver, use the BUF634 wrapped around the loop of a low noise opamp (never, ever use the AD797) as illustrated in the BUF634 datasheet.

Don't use a commercial power supply, make a protoboard setup for a NIM box.

 

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