Vintage multimeter : AOIP Multipréci Mn5121

[Elektrongeek]

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

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 

[firewalker]

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.

[Elektrongeek]

Thanks i have forget that :p

[Nack486]

Vintage gear has this awesome look to it. Here is some stuff from my school's lab.

[moemoe]

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.

[Elektrongeek]

Omg that thing is rated for 1KV 

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 

[Elektrongeek]

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)

[la6ala]

Awesome to see vintage gear like this!