Have acquired a University MVA-100 multi-meter. Opening up for a look found some components replaced and one in the current part of the circuit evaporated. So it has had a hard life. Ohms works OK so will have a go at repairing it.

So I need a circuit for this meter. I would be grateful if anyone can anyone help as I could not find it on line.

Unfortunately, documentation for University gear -- like Palec gear -- is rare as hen's teeth.

Kev Chant has some, but not for that model.

There are photos of some MVA models on Radiomuseum, but not the MVA-100. Stuart Irwin would probably like to add that model if you were willing to make a photo or two available for that.

Thanks GTC. I checked all the usual suspects too. The bloke I bought it from at a garage sale said the user instructions was a green leaflet and included a circuit, but he hadn't seen it for ages. He knew it was damaged but I was able to get full deflection on resistance setting by shorting the terminals so decided to take a chance on it. It has a large dial so at the very least can turn it into a sensitive output meter.

Will take some photos when its cleaned up.

Photo uploaded to Post 3.

Very clean unit.

"Very clean unit."

Was a bit grubby and was missing some black paint on the bottom of the dial cover which I touched up with black marking pen.

The handle is bent and there are chips off the bakelite where the top and bottom halves of the case meet.

It says "Made in Japan" on the dial and the back of the case. The Australian University instrument maker still exists so I wonder if this has Australian links. It is quality though.

The Australian University organisation has changed names a few times since its formation in the twenties and now exists as University Paton Instruments.

See
http://www.universitypaton.com.au/AboutUs.htm
for a potted history.

"Unfortunately, documentation for University gear -- like Palec gear -- is rare as hen's teeth. "

I contacted Univesity Paton Instruments seeking information. I can't do better than quote the reply verbatim:

"The company has changed hands several times from the mid 1980's up until now and only limited records of manufacture have been passed on.

I've had a look through the archives and found several MVA data sheets, but not an MVA-100 data sheet unfortunately, there were no circuit diagrams for any multimeter, even other models."

The reply does not say implicitly that the MVA-100 is one of theirs so it might be a Japanese clone, but then again it is not denied - perhaps they just don't know. Hopefully there are boxes of information that will come to light one day.
.
Feel free to submit to Radiomuseum if you like Stuart.

QUOTE: "I've had a look through the archives and found several MVA data sheets, but not an MVA-100 data sheet unfortunately, there were no circuit diagrams for any multimeter, even other models."