Return to the thumbnail page Display/hide file information See previous file See next file

Soviet Tree Topper

Soviet Tree Topper

Click to view full size image

Soviet Tree Topper

IMG_0644.JPG IMG_0643.JPG IMG_0641.JPG IMG_0639.JPG

File information

File information

Download: Download this File
Filename:IMG_0641.JPG
Album name:mdcastle / Christmas Lights
Keywords:Lanterns
File Size:793 KB
Date added:Dec 27, 2018
Dimensions:2464 x 1848 pixels
Displayed:76 times
Date Time:2018:12:26 21:41:30
DateTime Original:2018:12:26 21:41:30
Exposure Bias:0 EV
Exposure Time:1/30 sec
FNumber:f 2.2
Flash:No Flash
Focal length:4.15 mm
ISO:25
Make:Apple
Model:iPhone SE
Software:12.1
White Balance:0
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-154674
Favorites:Add to Favorites
Comments
rjluna2
Sr. Member
****
Offline

Gender: Male
Posts: 310
View Gallery

Robert


GoL
View Profile Personal Message (Offline)
Dec 27, 2018 at 02:16 PM Author: rjluna2
Looks like they used the telephone light module

Pretty, please no more Chinese failure.

merc
Sr. Member
****
Offline

Gender: Male
Posts: 252
View Gallery

Adam


GoL
View Profile Personal Message (Offline)
Dec 27, 2018 at 03:00 PM Author: merc
Indeed.

Not a misoLEDist...

kai
Jr. Member
**
Offline

Posts: 57
View Gallery

View Profile Personal Message (Offline)
Dec 27, 2018 at 03:58 PM Author: kai
What remains is the question for the rated voltage. Do they look underdriven enough for being 60 volts lamps?

These lamps are, by the way, used also in other kinds of equipment, such as desks of railway interlocking systems.
sol
Hero Member
*****
Offline

Posts: 1047
View Gallery

View Profile Personal Message (Offline)
Dec 27, 2018 at 06:48 PM Author: sol
Well 220 divided by 5 is 44. If they are 60V lamps, they would be nicely under driven to produce a soft glow and increasing their life, too. Now I don’t know what kind of EOL bypassing mechanisms would be present here so one bad lamp could make all go dark. However, there are only five lamps to troubleshoot if it were to happen.

Very nice design, I quite like it.
ResR
Newbie
*
Offline

Gender: Male
Posts: 7
View Gallery


Martin Lelle resr1286
View Profile WWW Personal Message (Offline)
Dec 29, 2018 at 06:32 AM Author: ResR
These bulbs are usually used for industrial indicators, sometimes on 220V with series wirewound ceramic resistor as ballast. There is no bypass if one goes EOL.

http://www.lighting-gallery.net/gallery/index.php?cat=11837





Posts:
View Gallery

View Profile Email
Dec 29, 2018 at 08:49 AM Author:
These lamps are called 'commutator lamp' http://www.nordtech.ru/lamps/t681.jpg
Factory was produced these stars with 48 and 60 volt lamps. The Last lamps work with sufficient underload. Thus, the lamps in these stars work for a very long time. One of these stars has been working for me for more than 30 years without a single lamp replacement. The other two with 48 v are slightly smaller.
© 2005-2019 Lighting-Gallery.net | Powered by: Coppermine Photo Gallery