Soviet military electronics teardown 'ВУ' box

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msylvain59

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These kind of Soviet equipment and technologie will work till the end of the time

marinkhan

5:50 This is vibration protection. Soldered Legs are not reliable and the base area is small, the element is high. It is logical to put it on its side and use a large area for fixing with glue. In civilian equipment, they would do as you said, but not in the military.
140УД1Б are medium-precision operational amplifiers without frequency correction.
Produced according to bipolar technology and designed to work in general-purpose radio-electronic equipment.
The diamond icon on the elements of radio components means military acceptance. There is increased accuracy and reliability of the part. There are exactly the same details in the USSR, but without a rhombus - they are for civilian devices.
Аll parts and the board are varnished to prevent from air humidity.
Boards of 1973, judging by the markings.

giggling_boatswain

The IC's are op amps - 140УД1Б. Similar to µA702, H-2620, VC1539 according to the datasheet. There was probably some analog data processing involved, comparing, adding, subtracting input voltages, or calculating logarithmic/anti logarithmic functions or whatnot.

featheredskeptic

The most interesting thing is that these tiny relays are still being sold. In Kazakhstan they cost me about 150 tenge, or about a third of a dollar.

viewererdos

The relays are mounted this way because their contacts are too close to fit the PCB design rules for this device. Notice how all components and their pins are spaced, and even opamps are mounted into a very widely stretching footprints.

yoksel

the enclosure almost looks like it might be explosive atmosphere rated.

techpros

Kyrilic "ВУ" in latin goes as VU. I'm guessing that stands for Vychislitelnoje Ustroistvo, meaning calculating unit.

antasosam

Спасибо за обзор.
Реле РЭС-49, никогда не видел, чтобы их так устанавливали.
Судя по буквам в децимальном номере «БК», разработчик этого устройства ЦНИИ-173 и это некая измерительная система управления огнем, может быть от танка?

Thanks for the review.
Relay RES-49, never seen to be so installed.
Judging by the letters in the decimal issue of "BK", the developer of this device is TsNII-173 and this is some kind of measuring fire control system, maybe from a tank?

museumrza

Big green axial components are capacitors not resistors

nikolaipavlov

I love to listen to the French speaking English. Sounds far better than me as a German speaking English.
Not sure why I am watching this video. Interesting anyways, thanks for sharing!

michaelb

6:00, my two cents, They used glue/epoxy for vibration reasons, my guess is that they assume no maintenance so no need to be removable. horizontally to keep a low profile and minimize the risk of the upper circuit board hitting the relay. Look extremely sturdy if you ask me, the military way, although Russians do like it cheap and they normally take the cheapest option to solve problems, like here.

DDDelgado

The ВУ on the front panel is likely ВЫЧИСЛИТЕЛЬНОЕ УСТРОЙСТВО which literally means "computer". Annotation Д (ДИОД) is for diodes, Р (РЕЛЕ/РЕЗИСТОР) is for relays or maybe resistors, T is obvious and I'm curious what У is for.

borcom