Vibrator (Leningrad Electronic Factory “Vibrator”) was in Leningrad (Ленинград) former USSR.
They were made various electronical devices. Also, they are known for manufacturing the Leningrad light meters series starting in the late 1950's.
|Leningrad 4 c.1970 image by Süleyman Demir (Image rights)|
The vibrator name was an old type of AC electrical transformer.