Orin beat me to it but BAMA also have a copy (with some the
change sheets) at:
I bought a box of a dozen dead 84xx sensors a while back for
about 60 USD, with much the same idea in mind but haven't got
round to it yet! I would happy to ship one over to you if it would
help?
Adrian
On 11/17/2018 7:19 PM, Tobias Pluess
wrote:
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Robert,
do you own a schematic of the diode sensors? The schematic
for the thermocouple sensors was hard enough to obtain. In the
current service manuals, there are of course no schematics at
all, and the HP journals of that time also don't show the actual
schematics of the sensors.
Tobias
Sent from
my Samsung Galaxy smartphone.
-------- Original message --------
Date: 11/17/18 20:09 (GMT+01:00)
Subject: Re: [HP-Agilent-Keysight-equipment] A homemade diode
power sensor for HP meters
Interesting project. The diagram you show is for the
Thermocouple "A" suffix sensor. While the principle and basic
circuit is the same for diode and thermocouple, the A2 PCB is
different so there must be a difference in the circuit. This may
be related to your offset issue.
Robert G8RPI.
