Unknown Soviet power supply

[Agony]

Not sure what it is for tho -  but thats some "quality" russian engineering

[c4757p]

Wow, they sure did like right angles. Even those diodes are square!

[mzzj]

Wow, they sure did like right angles. Even those diodes are square!

Or really round. Of course round in other way compared to capitalist diodes

Wait until I do teardown of my USSR LCR-bridge
Pretty serious engineering inside, made mostly of Ceramic SMD chips!
Either it was built to some Mil-Spec equivalent or the russian manufacturing plant could not get anything else in their hands 
http://www.minprom.gov.by/images/products/2147.jpg

[c4757p]

It's really funny to see that marked 1990. The only place I can see making something looking like that in 1990 is a hobbyist's garage. Or Russia.

[Agony]

tho it looks like a power supply for a commercial product- ah i recall i think it  was psu for one of those  home computer systems like spectrum and such.

[HLA-27b]

This just reminds me that I have an old Russian multimeter somewhere. Got to dig it up and do a teardown.

[kfitch42]

It's really funny to see that marked 1990. The only place I can see making something looking like that in 1990 is a hobbyist's garage. Or Russia.

Hey, give it some credit! The big capacitors are from early 89, the weird orange disc shaped diodes are from early 87.

[Agony]

Still better then most made in china 

[c4757p]

My general impression of old Russian electronics is that they are big and clumsy, but work, unlike Chinese electronics, which are lightweight, flimsy, and work just long enough to pass whatever excuse for quality control they have.

[ftransform]

please put a hammer and sickle on it

it should also play patriotic music

[c4757p]

please put a hammer and sickle on it

This is the stamp that my Russian vaccuum tubes have.

[Agony]

interesting indeed - i dotn see the standard soviet branding... possibly since its from 90-s and soviet union collapsed in 89

So i should say that this is the Technology of Russian Federation.


Hmm.. well once i get my solder station.. ill remove the transformer - just wanna  see if its any good ... but the rest of the stuff... EWW those orange soviet "transistors" and aluminum caps...

[c4757p]

If anyone's wondering if the text says anything interesting, no.

Front: "Power Supply Unit". Back: "Unplug before removing cover."

[mazurov]

This is late design, likely made by some kid who doesn't know how to use power diodes. The round orange diodes are supposed to be mounted upside-down on the bottom side of the PCB so they will desolder and fall off when overloaded. They were introduced around 1982.

What do you want to know about this supply?

[GK]

Still better then most made in china 

But still pretty primitive and crappy construction. It was probably a critical, non-redundant power supply for a nuclear reactor control system. 
 
 

[Agony]

nop, as i posted the 2nd image.. it was the power supply of the personal computer, running on a 8080 clone.... and most likely was used to control ballistic nuclear missile silos.

[free_electron]

please put a hammer and sickle on it

This is the stamp that my Russian vaccuum tubes have.

A hammer is enough. No need for the sickle. Just remember to hit it hard. I love the sound of vacuum tubes. Especially when they are being hit with a hammer or dropped onto concrete from a few meters high. Nothing beats the sound they make then.

[c4757p]

A hammer is enough. No need for the sickle. Just remember to hit it hard. I love the sound of vacuum tubes. Especially when they are being hit with a hammer or dropped onto concrete from a few meters high. Nothing beats the sound they make then.

  Yeah, I'm with you, they have no better audio performance than anything else. I just have them because I like playing with electronic components I haven't played with yet. Got lucky and picked up ten 6N1P for what one of them usually sells for. Didn't do audio, either - played with making a DC-capable op amp. I like analog math much more than audio.

[ResR]

interesting indeed - i dotn see the standard soviet branding... possibly since its from 90-s and soviet union collapsed in 89

So i should say that this is the Technology of Russian Federation.


Hmm.. well once i get my solder station.. ill remove the transformer - just wanna  see if its any good ... but the rest of the stuff... EWW those orange soviet "transistors" and aluminum caps...

Soviet union collapsed in 1991.  Sometimes they don't have soviet standart stamp, because it didn't get a quality approval for it.
About the PSU, I have seen those black diodes everywhere. Orange transistors are KT315 (NPN) or KT361 (PNP), their electrodes brake easily, those orange diodes are c--p.
Transformers are heavy duty, but they hum a lot.

[Fezder]

pretty strange interior, and what is it used for....cyrillic alphabets anyone?

[G7PSK]

In my youth I have lined up a fortunes worth of valves on a wall in order to use as targets.

[free_electron]

And this years award for the best use of the words 'quality' and 'soviet' in the same sentence goes to :

Sometimes they don't have soviet standart stamp, because it didn't get a quality approval for it.

The actual reason some products didn't get the soviet stamp of quality is :

- they were to drunk to remember where they put the stamp and/or inkpad

and/or

-the stamp itself was broken...

[reagle]

A lot of times the stamp was only put on "quality" things prepared for export. No need for that on the internal market

[Nack486]

pretty strange interior, and what is it used for....cyrillic alphabets anyone?

It doesn't say what it is used for, unfortunately, just a warning to unplug it from the mains before opening it.

[Agony]

reply coems a bit late..  missed it soemhow... but:

If i recall now it was for one of the russian analogs for  the early computers - called mikrosha:
http://commons.wikimedia.org/wiki/File:Mikrosha.jpg