Unknown Soviet power supply - Page 1
Forum section: electronics / general

author: Agony
author_rank: Contributor
timestamp: March 20, 2013, 12:10:30 pm
content: Not sure what it is for tho - but thats some "quality" russian engineering

author: c4757p
author_rank: Super Contributor
timestamp: March 20, 2013, 12:35:57 pm
content: Wow, they sure did like right angles. Even those diodes are square!

author: mzzj
author_rank: Super Contributor
timestamp: March 20, 2013, 12:42:05 pm
content: Quote from: c4757p on March 20, 2013, 12:35:57 pmOr really round. Of course round in other way compared to capitalist diodesWait until I do teardown of my USSR LCR-bridgePretty 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 handshttp://www.minprom.gov.by/images/products/2147.jpg

author: c4757p
author_rank: Super Contributor
timestamp: March 20, 2013, 01:15:04 pm
content: 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.

author: Agony
author_rank: Contributor
timestamp: March 20, 2013, 01:24:06 pm
content: 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.

author: Unknown
author_rank: Unknown
timestamp: March 20, 2013, 01:38:49 pm
content: This just reminds me that I have an old Russian multimeter somewhere. Got to dig it up and do a teardown.

author: kfitch42
author_rank: Frequent Contributor
timestamp: March 20, 2013, 02:42:45 pm
content: Quote from: c4757p on March 20, 2013, 01:15:04 pmHey, give it some credit! The big capacitors are from early 89, the weird orange disc shaped diodes are from early 87.

author: Agony
author_rank: Contributor
timestamp: March 20, 2013, 03:17:36 pm
content: Still better then most made in china

author: c4757p
author_rank: Super Contributor
timestamp: March 20, 2013, 03:37:55 pm
content: 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.

author: ftransform
author_rank: Frequent Contributor
timestamp: March 20, 2013, 05:39:00 pm
content: please put a hammer and sickle on itit should also play patriotic music

author: c4757p
author_rank: Super Contributor
timestamp: March 20, 2013, 05:42:40 pm
content: Quote from: ftransform on March 20, 2013, 05:39:00 pmThis is the stamp that my Russian vaccuum tubes have.

author: Agony
author_rank: Contributor
timestamp: March 20, 2013, 08:24:44 pm
content: interesting indeed - i dotn see the standard soviet branding... possibly since its from 90-s and soviet union collapsed in 89So 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...

author: c4757p
author_rank: Super Contributor
timestamp: March 20, 2013, 08:32:44 pm
content: If anyone's wondering if the text says anything interesting, no.Front: "Power Supply Unit". Back: "Unplug before removing cover."

author: mazurov
author_rank: Frequent Contributor
timestamp: March 21, 2013, 06:21:35 am
content: 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?

author: GK
author_rank: Super Contributor
timestamp: March 21, 2013, 08:21:43 am
content: Quote from: Agony on March 20, 2013, 03:17:36 pmBut still pretty primitive and crappy construction. It was probably a critical, non-redundant power supply for a nuclear reactor control system.

author: Agony
author_rank: Contributor
timestamp: March 21, 2013, 09:11:21 am
content: 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.

author: free_electron
author_rank: Super Contributor
timestamp: March 21, 2013, 02:07:30 pm
content: Quote from: c4757p on March 20, 2013, 05:42:40 pmA 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.

author: c4757p
author_rank: Super Contributor
timestamp: March 21, 2013, 03:18:53 pm
content: Quote from: free_electron on March 21, 2013, 02:07:30 pmYeah, 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.

author: ResR
author_rank: Regular Contributor
timestamp: March 22, 2013, 05:07:15 pm
content: Quote from: Agony on March 20, 2013, 08:24:44 pmSoviet 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.

author: Fezder
author_rank: Regular Contributor
timestamp: April 11, 2013, 07:11:33 am
content: pretty strange interior, and what is it used for....cyrillic alphabets anyone?

author: G7PSK
author_rank: Super Contributor
timestamp: April 11, 2013, 05:53:08 pm
content: In my youth I have lined up a fortunes worth of valves on a wall in order to use as targets.

author: free_electron
author_rank: Super Contributor
timestamp: April 11, 2013, 06:23:54 pm
content: And this years award for the best use of the words 'quality' and 'soviet' in the same sentence goes to :Quote from: ResR on March 22, 2013, 05:07:15 pmThe 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 inkpadand/or-the stamp itself was broken...

author: reagle
author_rank: Unknown
timestamp: April 12, 2013, 01:26:58 am
content: A lot of times the stamp was only put on "quality" things prepared for export. No need for that on the internal market

author: Nack486
author_rank: Contributor
timestamp: April 12, 2013, 04:17:06 pm
content: Quote from: Fezder on April 11, 2013, 07:11:33 amIt doesn't say what it is used for, unfortunately, just a warning to unplug it from the mains before opening it.

author: Agony
author_rank: Contributor
timestamp: November 29, 2013, 06:30:24 pm
content: 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