Author Topic: Used multimeter buyer's guide  (Read 20450 times)

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Offline ogdento

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Re: Used multimeter buyer's guide
« Reply #75 on: October 13, 2019, 01:08:04 am »
Wow, I didn't realize you needed the ac-09 option for ac measurements.
 

Offline PixieDust

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Re: Used multimeter buyer's guide
« Reply #76 on: April 14, 2020, 09:12:41 am »
Looking at one of the HP multimeters:

https://www.ebay.com/itm/Hewlett-Packard-Multimeter-3478A/121971867492?hash=item1c6616ff64:g:uasAAOSwYmZXI~QP

What's the deal with possible voltages? There's 110V, 120V, 220V and 240V (120V in this case is filled in) are these hard wired to a specific voltage or can it be changed by changing the fuse? Fluke one seem to have selectable voltages on their back. As I type this my electronics noob is probably coming out since a fuse probably can't actually switch anything.
 

Offline rsjsouza

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Re: Used multimeter buyer's guide
« Reply #77 on: April 14, 2020, 01:36:25 pm »
The voltage selection of the HP3478A is a wire that needs to be connected to the appropriate input inside the equipment.
Check the attached excerpt from the Service Manual

Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 

Online helius

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Re: Used multimeter buyer's guide
« Reply #78 on: April 14, 2020, 08:57:51 pm »
As I type this my electronics noob is probably coming out since a fuse probably can't actually switch anything.
Well, the fuse holder in some instruments can be rotated to engage different transformer windings for various world voltages. So you wouldn't have been far off, even if this specific instrument does it a different way.
 

Offline PixieDust

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Re: Used multimeter buyer's guide
« Reply #79 on: April 15, 2020, 02:57:11 am »
Thanks guys.
 


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