Vintage multimeter : AOIP Multipréci Mn5121 - Page 1
Forum section: electronics / testgear

author: Elektrongeek
author_rank: Contributor
timestamp: March 11, 2013, 05:46:24 pm
content: 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 <3The 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 networkA 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 hereThat will be very nice.Also please forgive me if i make some english mistakesi'm french

author: firewalker
author_rank: Super Contributor
timestamp: March 11, 2013, 05:54:04 pm
content: It's not difficult to to use thumbnails. For ImagesHack just add .th before the the .jpg extension.something likeCode:[url=http://img689.imageshack.us/img689/1956/img20130311155732.jpg]http://img689.imageshack.us/img689/1956/img20130311155732.th.jpgNote the added.thto theimgtag.The result:Large images makes the thread unreadable.Alexander.

author: Elektrongeek
author_rank: Contributor
timestamp: March 11, 2013, 05:57:52 pm
content: Thanks i have forget that :p

author: Nack486
author_rank: Contributor
timestamp: March 11, 2013, 07:36:13 pm
content: Vintage gear has this awesome look to it.Hereis some stuff from my school's lab.

author: moemoe
author_rank: Regular Contributor
timestamp: March 12, 2013, 11:29:02 am
content: It's really scary what they rated the devices for these times.I got anMonacor MT-650from 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.

author: Elektrongeek
author_rank: Contributor
timestamp: March 12, 2013, 12:35:04 pm
content: Omg that thing is rated for 1KVBut i have finded worse and they sells that in a store near my househttp://www.bricodepot.fr/arcachon-biganos/multimetre-analogique/prod11000/they says on the packaging that it is rated for 500V

author: Elektrongeek
author_rank: Contributor
timestamp: March 12, 2013, 12:43:25 pm
content: Hey Nack486 your school lab instruments look like what we are using in my school labI'm studying electrical engineering (3 phases motors , Programmable Logic Controller ,and other nice things)

author: la6ala
author_rank: Newbie
timestamp: March 12, 2013, 01:09:12 pm
content: Awesome to see vintage gear like this!