Rick,
I just tried my thermal camera on my working VFD and did not see
anything. Apparently, the filaments are at a low enough temperature
that not enough IR makes it through the glass.
Oh well, it was worth the effort.
Brent
On 5/5/2020 8:58 PM, Rick Bale wrote:
Brent that's a great idea since I have one too.
Rick
On Tue, May 5, 2020 at 7:54 PM Brent Gordon <[email protected]>
wrote:
Rick,
I tried my cell phone camera on a working Keithley 2400 VFD and could
not see the filament. I'll try a thermal camera tomorrow.
I have very little experience with VFDs.
Brent
On 5/5/2020 11:53 AM, Rick Bale wrote:
David and Brent,
I didn't pick up any change in the VFD's surface with the iphone when I
powered it on. So I took it apart completely to see the naked VFD. The
two getters in the far end corners are still dark black and shiny. Looks
brand new as opposed to the light grey bad ones I've seen in pictures.
Since it's apart and disconnected from the unit I'm inclined to power the
VFD up directly. I need to map out the connections. Have you guys ever
done this before?
Rick
On Tue, May 5, 2020 at 6:42 AM David C. Partridge <
[email protected]> wrote:
It's also worth checking the "getters" in the VFD - are they shiny
metallic
or white? If white your VFD has lost it's V(acuum)
D.
-----Original Message-----
From: volt-nuts [mailto:[email protected]] On Behalf Of
Rick
Bale
Sent: 05 May 2020 03:43
To: Brent Gordon
Cc: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] Solartron 7081
Brent, I check that our tomorrow. Thanks
Rick
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