Analog DMM!

[Alvin]

I've only just noticed that the sticky label on the box of my Pro'sKit multimeter - much discussed in this thread https://www.vintage-radio.net/forum/....php?p=1026552 - proclaims it to be an analog DMM!

[Sinewave]

Probably someone has one of these, along with a dyson hoover and a Leisure Range cooker.

[kalee20]

Well, if Analog Devices can make DSP's...

[Diabolical Artificer]

Maybe it's mechanically constructed inside like Babbage's engine or valved like the old Boms at Bletchley but they've managed to miniturise it all : )

Andy.

[Radio Wrangler]

Oh dear, but why isn't it surprising?

People put up signs saying 'ROAD WORKS' precisely where the road is NOT working well at all.

Even the word 'verb' is a noun.

David

[TonyDuell]

One of Don Vonada's (at DEC) 'laws' is

'Digital circuits are made from analogue parts'.

With reference to post #4 there were electromechanical digital voltmeters. They used a servo system like a chart recorder but the motor, rather than moving a pen, drove a turns counter. Slow, but fairly accurate if the feedback potentiometer was linear. It's one measuring instrument type that I have not yet managed to find.

There were also valved digital voltmeters. The Blackburn BIE2114 was the first all-electronic digital voltmeter I believe. It used trochotrons as the counters.

But those don't claim to be analogue digital meters.

[Herald1360]

Originally Posted by Diabolical Artificer

Maybe it's mechanically constructed inside like Babbage's engine or valved like the old Boms at Bletchley but they've managed to miniturise it all : )

Andy.

I don't think the Bombes had valves, weren't they just electromechanical? Colossus of course.........

Otherwise- the analogue meter scales do have digits on them

[Peter88gate]

Originally Posted by TonyDuell

With reference to post #4 there were electromechanical digital voltmeters. They used a servo system like a chart recorder but the motor, rather than moving a pen, drove a turns counter. Slow, but fairly accurate if the feedback potentiometer was linear. It's one measuring instrument type that I have not yet managed to find.

When I worked in the electronics R&D Lab at Hilger and Watts in the early 1960s we had a Solartron analogue DVM just like this. It used to tick as it drove the turns counter rather like a cyclometer. Fascinating to watch for a young apprentice like me! I've never seen another one and unfortunately I don't know the model number.

Peter

[barrymagrec]

My Fluke 179 DMM also has an "analogue" bar indicator.

[AC/HL]

Originally Posted by TonyDuell

With reference to post #4 there were electromechanical digital voltmeters. They used a servo system like a chart recorder but the motor, rather than moving a pen, drove a turns counter. Slow, but fairly accurate if the feedback potentiometer was linear. It's one measuring instrument type that I have not yet managed to find.

This is actually the display from an avionics DME, but it's the same principle, analogue mechanical with a digital readout..

[Diabolical Artificer]

"I don't think the Bombes had valves" Right Chris - https://en.wikipedia.org/wiki/Bombe

Andy.

[Graham G3ZVT]

Plenty of people have bought a "digital radio", only to discover they have bought an AM/FM set with a numerical display.

[The Philpott]

Data input is a poorly paid job, often staffed by people who don't necessarily know what they're looking at, and are under output-pressure. A bush gets called a washer, a collet gets called a nut, etc etc!

(Re. post no.12 My car rad/cass is an analogue receiver with digital tuning and a digital display, a combination which is quite ideal for the purpose...no hideously loud digital squeals as the signal decryption drops out then restarts.)

Dave

[Radio Wrangler]

All the critical bits of a DMM are analogue

All the critical bits of a 'Digital' camera are analogue.

The digital bits are easy, it's the quality of the analogue bits that makes real differences.

I've never heard anyone wonder how come thousands of shots from a 16x24mm sensor can get stored on the much smaller piece of silicon in a memory card. No-one seems surprised... no-one seems to have noticed.

The public don't know what digital is. Digital headphones seem to be plain analogue ones with a micron of gold flash on the jack plug

David

[McMurdo]

Amused the other day when I saw for sale an 'analogue' washing machine.

[factory]

Originally Posted by TonyDuell

With reference to post #4 there were electromechanical digital voltmeters. They used a servo system like a chart recorder but the motor, rather than moving a pen, drove a turns counter. Slow, but fairly accurate if the feedback potentiometer was linear. It's one measuring instrument type that I have not yet managed to find.

Something like this Digitec one on Youtube;
https://www.youtube.com/watch?v=xl-SjUW9Uho

PM me for a link to one that is for sale.

Traditional electric meters could also be called analogue meters with a digital readout.

David

[Nuvistor]

Originally Posted by McMurdo

Amused the other day when I saw for sale an 'analogue' washing machine.

Perhaps one of these.