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Fun With Vintage Digital Meters! (Patreon)

Published:
2019-11-29 02:41:03
Imported:
2021-10

Content

Some fun on Thanksgiving 2019 - taking a look at a couple of really neat digital meters I got from the University of Pennsylvania Haul.  One mechanical - one LED - Both digital!  Really!  Enjoy! 

The original video of the U of Penn Haul - https://www.youtube.com/watch?v=_znnfw0tQFc

https://youtu.be/RML4DD4YiK4

Files

Fun With Vintage Digital Meters!

Some fun on Thanksgiving 2019 - taking a look at a couple of really neat digital meters I got from the University of Pennsylvania Haul. One mechanical - one LED - Both digital! Really! Enjoy! Join Team FranLab!!!! Become a patron and help support my YouTube Channel on Patreon: http://www.patreon.com/frantone The original video of the U of Penn Haul - https://www.youtube.com/watch?v=_znnfw0tQFc - Music by Fran Blanche - Frantone on Facebook - https://www.facebook.com/frantone/ Fran on Twitter - https://twitter.com/contourcorsets Fran's Science Blog - http://www.frantone.com/designwritings/design_writings.html FranArt Website - http://www.contourcorsets.com

Comments

Anonymous

'A thing of beauty is a joy forever' Thanks fran!

Anonymous

It's Metric - both of them are. ;-)

Anonymous

The "Golden Era of Cool Things"! Most definitely, Fran. Love this - upping my Patreon sub. Thanks, you are one of those Cool Things!

HarveyB

The big 3.58 MHz crystal was very common at the time, and hence very cheap. Millions of them were made for use for the phase reference oscillators in Color TV's and because of their cost became the clock for a wide variety of devices.

HarveyB

I'm fairly certain that the voltmeter is a dual slope integrator type. I designed and built one myself while a college student in the early 70's using TTL chips. The cool thing about the technique is that it can be done with digital and analog "jelly bean" components and doesn't require a specialized A to D chip.

Anonymous

I bet both of those cost quite a bit back in the day... From a time when displays had a '+' sign as well as a '-' :o)

Anonymous

Happy Thanksgiving Fran x!

Nicholas Wilson

It’s great to see you back, Fran. 😊

Anonymous

A day late, but my Thanksgiving is now complete; Family, Friends, a Thanksgiving Dinner that Can't be Beat, and a Brilliant New Video from FranLab. I love the old stuff, and this was a particular Joy, from the Window in the Styrofoam to the delightful discovery that the that the latter Counter was in reality a Voltmeter! Thank *you* Fran, very much!

BobC

Mechanical pulse counters are still mandated today in some safety-critical applications for the simple reason that they preserve and continue to display their last value when power is removed. In some applications, neither redundant supplies nor a backup battery can provide the required persistence. The only current technology that even comes close is ePaper, and though it has some shortcomings, it is slowly gaining ground in such applications.

Anonymous

Fun! I have quite a bit of vintage test gear (including an old Triplett Model 1200) but no panel mount gear. I always enjoy your demos and teardowns of vintage parts.