Help identify this electro-optical device? - Page 1
Forum section: electronics / general

author: Vld
author_rank: Newbie
timestamp: September 28, 2023, 02:06:23 pm
content: Greetings everyone.Please help me determine what this is?Any idea what this is?

author: Vld
author_rank: Newbie
timestamp: September 28, 2023, 02:08:30 pm
content: 2

author: Vld
author_rank: Newbie
timestamp: September 28, 2023, 02:10:12 pm
content: 3

author: Infraviolet
author_rank: Super Contributor
timestamp: September 29, 2023, 01:00:59 am
content: Where did you encounter it, do you know anything about what it may have been connected to or inegrated within? What other context can you provide for it?

author: Vld
author_rank: Newbie
timestamp: September 30, 2023, 09:55:37 am
content: I bought a variety of equipment many years ago. No additional information available. Please look at additional photoshttps://disk.yandex.ru/d/5hFPncUHLOO1jQ

author: jpanhalt
author_rank: Super Contributor
timestamp: September 30, 2023, 10:01:57 am
content: Unless someone has seen that exact device and knows, it seems unlikely anyone will have a good guess based on what you show. Can you take it apart to see what is in the optical path and connects to or though those connectors?

author: daqq
author_rank: Super Contributor
timestamp: September 30, 2023, 07:07:49 pm
content: Could be a vintage galvanometer:https://www.curiousscience.com/props/mirror-galvanometer-P4591.html

author: Gyro
author_rank: Super Contributor
timestamp: September 30, 2023, 07:19:10 pm
content: That was my first thought, two terminals and what could be a zero knob (on the end of a taut band suspension).The window looks a bit elaborate with the clamping ring, and small though. If there is mirror visible behind it, it probably is a galvanometer though.

author: DavidAlfa
author_rank: Super Contributor
timestamp: September 30, 2023, 09:45:04 pm
content: Maybe a simple ldr, or a photodiode, in a fancy enclosure.Really hard to guess, make some voltage/ohmic measurements to see how it changes with light.

author: Vld
author_rank: Newbie
timestamp: October 02, 2023, 12:33:07 pm
content: Thanks everyone for the ideas.I made some measurements (voltage and ohmic) with the tester, but it does not react at all and does not output voltage.I opened the top cover and took additional photos.https://disk.yandex.ru/d/5hFPncUHLOO1jQ

author: Twoflower
author_rank: Frequent Contributor
timestamp: October 02, 2023, 12:44:23 pm
content: How about that:https://www.historische-messtechnik.de/aktive-messgeraete/lichtstrahl-oszillographen/00845.phpMention the Siemens-Halske Logo at the top might helped a bit. I wasn't sure if that's the logo, because the picture wasn't sharp. But after daqq mentioned galvanometer it narrowed the search down substantially (Keywords I used Siemens Galvanometer Bakelit).Edit: I have to correct myself. That's a better match:https://www.historische-messtechnik.de/aktive-messgeraete/lichtstrahl-oszillographen/00392.phpEdit2: That's strange the one you have seems to have a SH Logo at the top (so likely from Western Germany) while the one in the link above is from RFT (from GDR). Otherwise the housing looks very similar. It seems that the fixture for this gadget seems similar in east and west.

author: Vld
author_rank: Newbie
timestamp: October 02, 2023, 03:45:48 pm
content: Thank you very much for the detailed information. Now it will be easier to sell it.Sincerely!Best wishes!