Products > Test Equipment
Test Equipment Anonymous (TEA) group therapy thread
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Atomillo:

--- Quote from: Specmaster on July 07, 2022, 07:13:09 am ---
--- Quote from: Zoli on July 07, 2022, 06:06:33 am ---
--- Quote from: Vince on July 06, 2022, 05:58:52 pm ---...
As for DMM's, I don't have fancy modern ones that can test white LEDs.
...

--- End quote ---
You don't need a new and fancy DMM to test the LED's; as example, my DMM870(1998) gives 3.2v,  and the 8060A gives 8V in diode testing mode, both enough to light up any LED's.
That's why I've asked to check your multi-meters, so next time you will know which is suitable for LED testing(is part of "Know your tools" training)  >:D :-DD :-DD :-DD

--- End quote ---
I've just checked my bench meters and was pleasantly surprised to discover that my oldest meter, HP 3466A also gave me the highest voltage in diode mode of 4.6V and handhelds only giving me 3.2V, one more reason for keeping the HP then  :-DD

--- End quote ---

Does anyone really need any reason at all to keep old HP gear??  :-DD
AVGresponding:

--- Quote from: bd139 on July 07, 2022, 07:19:35 am ---
--- Quote from: Specmaster on July 07, 2022, 07:13:09 am ---
--- Quote from: Zoli on July 07, 2022, 06:06:33 am ---
--- Quote from: Vince on July 06, 2022, 05:58:52 pm ---...
As for DMM's, I don't have fancy modern ones that can test white LEDs.
...

--- End quote ---
You don't need a new and fancy DMM to test the LED's; as example, my DMM870(1998) gives 3.2v,  and the 8060A gives 8V in diode testing mode, both enough to light up any LED's.
That's why I've asked to check your multi-meters, so next time you will know which is suitable for LED testing(is part of "Know your tools" training)  >:D :-DD :-DD :-DD

--- End quote ---
I've just checked my bench meters and was pleasantly surprised to discover that my oldest meter, HP 3466A also gave me the highest voltage in diode mode of 4.6V and handhelds only giving me 3.2V, one more reason for keeping the HP then  :-DD

--- End quote ---

Yeah I measured the 3465A. It doesn’t have a diode mode. You stick it in 1K ohms and it works. 4.6V too. Same circuit probably.

--- End quote ---

The O/C voltage can be misleading; none of the mentioned meters will measure as far as that I'll bet. Vince likes his Metrix MX-series, and they have an O/CV of ~4, but won't give a reading on a white LED, despite making it light. The forward voltage of this diode is 2.7V according to my Fluke 289, which has an O/CV of 5.4 but will for sure not measure above 3V or so, and the same applies to the Fluke 89 V which has an O/CV of 7.3, and will light two 2.7V white LEDs in series, but will not give a reading.
Specmaster:

--- Quote from: Atomillo on July 07, 2022, 08:00:57 am ---
--- Quote from: Specmaster on July 07, 2022, 07:13:09 am ---
--- Quote from: Zoli on July 07, 2022, 06:06:33 am ---
--- Quote from: Vince on July 06, 2022, 05:58:52 pm ---...
As for DMM's, I don't have fancy modern ones that can test white LEDs.
...

--- End quote ---
You don't need a new and fancy DMM to test the LED's; as example, my DMM870(1998) gives 3.2v,  and the 8060A gives 8V in diode testing mode, both enough to light up any LED's.
That's why I've asked to check your multi-meters, so next time you will know which is suitable for LED testing(is part of "Know your tools" training)  >:D :-DD :-DD :-DD

--- End quote ---
I've just checked my bench meters and was pleasantly surprised to discover that my oldest meter, HP 3466A also gave me the highest voltage in diode mode of 4.6V and handhelds only giving me 3.2V, one more reason for keeping the HP then  :-DD

--- End quote ---

Does anyone really need any reason at all to keep old HP gear??  :-DD

--- End quote ---
Not really but then it is only a 4.5 digit meter when my others are either 5.5 or 6.5 and its the only one that does not have safety shrouded leads.
Specmaster:
A quick update on the current state of politics in the UK, you have been warned  :-DD News flash on BBC, the PM is going to resign today and is expected to remain in post until the autumn. End of news flash, normal service will resume now  :-DD :-DD :-DD :-DD
Cerebus:

--- Quote from: mnementh on July 07, 2022, 12:49:07 am ---Condolences then. I'd rather drill screws through my feet than ever use that fustercluck again. Only app I ever found less intuitive than EagleCAD.  :palm:

mnem
*cringe*

--- End quote ---

Ah, so you've never used FreeCAD then?  >:D
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