Author Topic: Fluke model 840a/b or 841a/b galvanometer  (Read 321 times)

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Offline Tj138waterboy

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Fluke model 840a/b or 841a/b galvanometer
« on: January 02, 2021, 06:37:15 pm »
Does anyone have one of these units or schematics. Interested to know how it would compare to hp419/fluke845
« Last Edit: January 02, 2021, 06:40:50 pm by Tj138waterboy »
 

Online doktor pyta

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Re: Fluke model 840a/b or 841a/b galvanometer
« Reply #1 on: January 03, 2021, 03:45:24 pm »
I'm not 100% sure but ranges suggest this could be Fluke 540B galvo section sold as a separate instrument.
If so, it has LOW input resistance (magnetic modulator) so completely opposite of hp419 and F845.

Update: '840A' sequence appears in the F540B manual in galvo related parts.
« Last Edit: January 03, 2021, 08:55:01 pm by doktor pyta »
 
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Offline Tj138waterboy

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Re: Fluke model 840a/b or 841a/b galvanometer
« Reply #2 on: January 04, 2021, 11:54:39 am »
I have found one picture in a sales manual that appears to have this unit sitting inside a bigger backpack unit. From what I can find while waiting for my unit to arrive with missing power cord is that in picrures it was a non grounded plug with a box to modify from 110v to 220v just a few inches after the wall plug. The old picture background is the backpack unit.
 


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