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- To: tesla-at-pupman-dot-com
- Subject: Re: OLD Tubes/Coils - filament question
- From: "Edward V. Phillips" <ed-at-alumni.caltech.edu>
- Date: Sat, 8 Mar 1997 19:27:07 -0800 (PST)
John: Don't find either of those tubes listed in literature I have here. How do you know what filament voltage to use? Thoriated tungsten usually runs a nice yellow color at rated voltage, tungsten pretty near white. Will keep looking for dope. Ed
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