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Old 11th Oct 2018, 1:29 pm   #28
buggies
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Join Date: Jan 2009
Location: West Lothian, UK.
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Default Re: Full wave rectified RMS voltage

The Solartron VM1484 (analogue) true RMS voltmeter uses a Weston patented circuit and matched thermocouples with heaters in glass bulbs.
Oh - and a nuvistor as the input device...
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