Author Topic: Vintage multimeter : AOIP Multipréci Mn5121  (Read 3811 times)

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Offline Elektrongeek

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Vintage multimeter : AOIP Multipréci Mn5121
« on: March 11, 2013, 05:46:24 pm »
Hi.
Last year my teacher gave me a couple of bench Multimeter. :)
My school didn't want them anymore because the power switch was broken.  :(

So I bring them back home and I have repaired them.
So now I would like to share some pictures from inside the Multimeter.

Let's start by the faceplate and screen. 

Here the AOIP next to my fluke 83 series 1  <3 :-DMM


The screen.


Mains measurement.


Fuses.



The back with mains plug.



The mains fuse.



Oh a date code .


1983 This thing is way older than me !

On the bottom 4 screws.



Good quality screws.



And we are inside.

2 boards one for the transformer and the other one for the multimeter part.



Here you can see the tiny transformer and the bridge rectifier .



And the motherboard.



The main chip.



The screen driving circuit.



The input diodes.



A resistor network



A resistor network and various pots.



The new on switch.



The input jacks .



And then  a quick video tour .


<iframe width="420" height="315" src="https://www.youtube.com/embed/5WSDWuqy50k" frameborder="0" allowfullscreen></iframe>

By the way if someone has got the owner manual for this multimeter can he post it here  ;) That will be very nice.

Also please forgive me if i make some english mistakes :( i'm french  :)
« Last Edit: March 11, 2013, 06:20:56 pm by Elektrongeek »
 

Offline firewalker

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Re: Vintage multimeter : AOIP Multipréci Mn5121 WARNING 8MPX photos
« Reply #1 on: March 11, 2013, 05:54:04 pm »
It's not difficult to to use thumbnails. For ImagesHack just add .th before the the .jpg extension.

something like

Code: [Select]
[url=http://img689.imageshack.us/img689/1956/img20130311155732.jpg][img]http://img689.imageshack.us/img689/1956/img20130311155732.th.jpg[/img][/url]
Note the added .th to the img tag.

The result:


Large images makes the thread unreadable.

Alexander.
« Last Edit: March 11, 2013, 05:55:51 pm by firewalker »
Become a realist, stay a dreamer.

 

Offline Elektrongeek

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Re: Vintage multimeter : AOIP Multipréci Mn5121 WARNING 8MPX photos
« Reply #2 on: March 11, 2013, 05:57:52 pm »
Thanks i have forget that :p
 

Offline Nack486

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Re: Vintage multimeter : AOIP Multipréci Mn5121
« Reply #3 on: March 11, 2013, 07:36:13 pm »
Vintage gear has this awesome look to it. Here is some stuff from my school's lab.
 

Offline moemoe

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Re: Vintage multimeter : AOIP Multipréci Mn5121
« Reply #4 on: March 12, 2013, 11:29:02 am »
It's really scary what they rated the devices for these times.

I got an Monacor MT-650 from my grandfather. Look at these lousy connectors, and they rated this device for up to 1200KV AC and DC…

But I still like the analog display for measuring low voltages or currents, because it gives the ability to see trends (rising/falling) just in the corner of your eye. This is much more easy then reading and interpretating digits all the time.
https://github.com/maugsburger/
Breadboard Adapters featured in EEVBlog #573 on Tindie
 

Offline Elektrongeek

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Re: Vintage multimeter : AOIP Multipréci Mn5121
« Reply #5 on: March 12, 2013, 12:35:04 pm »
Omg that thing is rated for 1KV  :o

But i have finded worse and they sells that in a store near my house  ;)
http://www.bricodepot.fr/arcachon-biganos/multimetre-analogique/prod11000/

they says on the packaging that it is rated for 500V  :-DD
 

Offline Elektrongeek

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Re: Vintage multimeter : AOIP Multipréci Mn5121
« Reply #6 on: March 12, 2013, 12:43:25 pm »
Hey Nack486 your school lab instruments look like what we are using in my school lab :-+
I'm studying electrical engineering (3 phases motors , Programmable Logic Controller ,and other nice things)
 

Offline la6ala

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Re: Vintage multimeter : AOIP Multipréci Mn5121
« Reply #7 on: March 12, 2013, 01:09:12 pm »
Awesome to see vintage gear like this!  8)
 


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