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Re: 50 ohm thermocouples was RE: [HP-Agilent-Keysight-equipment] Issue with homemade diode power sensor for HP meters

 

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Regarding the TFT ?Marconi? power meter ?they had 2? thermisters? at 100 ohm each

?And connected so that DC they added up to 200 ohm but presented a 50? to an AC signal

?

The power sensor was easily tested as the 2 large pins on the convector should read 200 ohm

?

From: HP-Agilent-Keysight-equipment@groups.io [mailto:HP-Agilent-Keysight-equipment@groups.io] On Behalf Of RFI-EMI-GUY
Sent: 20 November 2018 05:12
To: HP-Agilent-Keysight-equipment@groups.io
Subject: Re: 50 ohm thermocouples was RE: [HP-Agilent-Keysight-equipment] Issue with homemade diode power sensor for HP meters

?

I have such an animal here a GM 460B with that TFT hermocouple. It is an ancient beast. They got bought up by Marconi down the line.

https://patents.google.com/patent/US3384819

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