ORIGINAL MESSAGE:
On Tue, 09 Nov 2010 06:10:42 +1000, Adrian <vk4tux@bigpond.com> wrote:
>I am surprised that a laser thermometer sensor with a programmable
>safety output level has not been
>utilised in high end amps, with the laser set on the anode seal area to
>trigger a shutdown circuit when temperature approaches high limit.
>We use these thermometers in the HVAC industry and they are accurate and
>immune to HV.
REPLY:
Most of that semiconductor based stuff has a hard time in a
kilowatt-plus RF field. Plain old iron is best. :-)
73, Bill W6WRT
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