Soviet digital clock analysis and restoration

[@msansjr]

The buzzing sound brings back memories of waking up in a cold morning with a horrible sound and having to go to school. Thanks for reminding me that my life is so much better now! :D

[@優さん-n7m]

yes, we were finally able to all become enslaved to material things thanks to fall of sovite union, it feels great

[@SUPRAMIKE18]

I could never decide what was worse, the electronic buzz/beep or the old metal bells that were loud as hell.

[@qwertykeyboard5901]

@@優さん-n7m Now, im not saying America is to blame for the fall of the soviet union, but thats EXACTLY what im saying and the people behind it should be charged with crimes against humanity.

[@WagTsX]

41 minutes worth of watching, even though I'm from Brazil and never saw any clock barely as similar to these here, it's still highly entertaining to watch it and learn the physics behind such interesting vintage devices. Also, you got such a massive spare components for them, so they seem like a very common household appliance there.

[@rjltrevisan]

I agree, and also, shout out to our Brazil!

[@isoguy.]

@@rjltrevisan Promoting world peace from the UK. Been to Sao Paulo, Rio, Salvador an Porto Allegro, what a fantastic country and the majority of Brazilian people are, in my experience, friendly and welcoming. Really miss the coffee, beef with black beans and rice.

[@rjltrevisan]

@@isoguy. Nice!

[@pu5epx]

+1 from .br

[@isoguy.]

@@pu5epx That makes you one cool dude in my books.

[@higamitakaro]

1:05 - "K" (Коррекция) is a correction button used to synchronise clock with the radio broadcasted signals of sharp time. The radio broadcasted several short beeps following the long beep on which a user pressed this button and the clock automatically adjusted minutes to "00" and hours to closest value, e.g. 13:57 would be adjusted to 14:00 but 14:03 would be adjusted to 14:00!

[@ELECTROMAN_MX]

wow!

[@liam3284]

From memory, even Windows had this feature. Most clock radios I have seen in hotels too.

[@sadikalarieski7340]

Such systems. wow!

[@Geniusinventor]

Man, your clock videos are very entertaining and educational. I love to see old-time technology that still works. Thank you very much for this video.

[@slxb7743]

Спасибо! В конце 80х собрал часы на основе советского радиоконструктора с микросхемой К145ИК1901. Работали исправно больше 20 лет. А заменили их только из-за полной потери яркости такого же индикатора как в этом видео.

[@DIOS-M]

@Рыбаков Андрей Фигня. Я знаю бабу которая выбросила пылесос из за того что в нем пылесборник забился. Попросила зайти глянуть почему пылесос не тянет, я на 5 минут заглянул к ней, в шутку ляпнул " выбрасывай у этого пылесборник забит".Через несколько дней зашел в гости а она реально его выбросила и новый купила. Как в старом, бородатом анекдоте, про пепельницу в машине. Не ожидал что в реальности такое встречу.

[@NoNameAtAll2]

автопереводчик не понимает "радиоконструктор" считает конструктор здесь это инженер, а не лего

[@DeNzIlDDA]

У нас такой дисплей 30 лет отработал. Пока я его не разбил. Только часы были в трехпрограммном приёмнике. Сейчас он работает, несколько лет назад дисплей перепаял))

[@СергейШершнев-ц9щ]

Могу подогнать новый дисплей

[@Grinya100ev]

Собирал и такие наборы, как вы, и собирал на ИЕ 18, 13, ИД3, или ИД2 в случае со светодиодами. Приятные воспоминания. Заметили, у автора и осциллограф советский?

[@BobT36]

One thing that really sets you apart DGW, is your thoroughness. You leave no stone unturned or text overlooked. It's an admirable quality.

[@DiodeGoneWild]

Thanks :) but it sometimes makes the videos bloody long :D

[@BobT36]

@@DiodeGoneWild It's alright, longish ones like this are fine to just bookmark and then put on a 2nd monitor. Watched it all the way. Better than shorting mains voltage for entertainment. ;)

[@airmann90]

I have a dozen old clock radios in my lab, always fun when you find a quality one with interesting analog circuitry to analyze. Thanks again.

[@airmann90]

@@Willam_J Good to know! I've always preferred 24 hr, not sure why though lol. I have no background in using it. Saves the whole "is it AM or PM?" confusion when you wake up in a stupor I guess

[@teslakovalaborator]

@@Willam_J I had the same idea, until I almost broke one clock, which had that shitty PCB & diffusor sandwich. Of course, the LEDs weren't equipped - well better check the first digit as you said :D

[@lauraiss1027]

My mom was a bookkeeper in 1982 and her salary was 5 rubles a day. But although this clock would seem like expensive , almost a half month salary, food (very few options available) was cheap and there was not much to buy so this clock was accessible to common folk to spend there savings on.

[@MacIn173]

And this clock would probably last for decades. My family had bunch of similar ones, last one that we stopped using somewhere in 2010, and it was completely functional, just not needed anymore. So yeah, you pay 1/3 of average monthly netto salary back then, but that's a "long time investment" :)

[@YuryMar]

@@MacIn173 Yes, this clock work very long, but on the other hand you can also buy simple mechanical alarmclock for 3-5 rubels, and it’s work at least 10 years without problem, or some “quartz” alarm clock (with clock dial, without fancy electronic digits) for 10-12 rubels (my grandma use this for years). So 45 rubels for digital alarmclock in the middle of 1980s - it’s for wealthy electronics geek of that time. :)

[@Fridelain]

Kinda like cars or homes, the money was not the biggest issue, there was a 10-14 year waiting list in the case of cars, similar for houses, some jobs had the perk you could buy the house or car straight away, you chosed a job based on the perks more than the salary. Often the perk was what you could take home (hidden) and trade on the black market, or favors you could do.

[@MacIn173]

@@Fridelain "there was a 10-14 year waiting list in the case of cars, similar for houses" that's not true. Average queue span for an apartment was 5 years (that's statistics, not biased subjective opinion). For cars, even less.

[@antibrevity]

Excellent video! You have an impressive collection of Soviet VFD clocks and I guarantee that some viewers got excited when you showed your box of displays ;). The fact that you go into depth is the reason I watch and support you, so definitely keep doing your own thing. In my opinion, this is the best electronics channel on youtube. I also love that you show us equipment that I might not have ever seen before and will never encounter in my country. This is probably one reason that Nixies are so popular, as Westerners did not grow up with them and thus find them novel and fascinating ;). I enjoyed seeing your Czecho-Slovak Nixie clock as well and love how it's displayed in a transparent case.

[@Alchemetica]

A very enjoyable video. Fascinating to see the evolving circuit design over time. Thanks for the video, as for the length I did not notice it, the time just flew by - a good indication of how the video is engaging.

[@arenaengineering8070]

Thanks for the video! These electronic clocks were developed on microchips with a low degree of integration in the 1970s. Also, an electronic clock on the VFD was also made on the microcontroller kr145ik1901 (kr145ik1911)(кр145ик1901 (кр145ик1911)). This series (k / kr145 ****) is very old (the beginning of production - the end of the 60s - the beginning of the 70s) and was used in many places. As well as a more advanced version of an electronic clock with a VFD display with a memory of alarm clocks for the week kr1005vi1, which was installed in the VCR "Электроника вм-12".

[@AdamV20]

As someone said before "There are three types of clocks: analog, digital and soviet"

[@KrotowX]

Soviet are the same as above, but usually as copies of 15-25 years old western tech. And build quality was worse.

[@ВиталикАршлнкмидов]

​@@KrotowXbut no shit, that's why the Amys are spying on the Russians because they want to copy the technology ... Russia was and will develop independently 😘

[@iamdarkyoshi]

Happy to support your channel. Screw the algorithm, I want cool quality content and your channel has been one of the best. Thank you!

[@jstro-hobbytech]

I love how it does so much with so few ics. That mesr meter is almost as important as the continuity function on your meter when trying to fix something.

[@dl8cy]

There was no single minute too much in this video ! Videos of DiodeGoneWild are so educating and relaxing at the same time!

[@mndx89]

Wow…for some reason i find old soviet electronic devices really interesting and fascinating… Would love one of these clocks, here in italy nixie tubes/displays are really unusual , especially considering that we adopted lcd displays in the early 80s, transictioning to them directly from analog clocks.

[@jcxtra]

I like your explanation videos. Between you and BigClive, you've pretty much taught me everything I know about electronics - so much that I drew a schematic from scratch today to explain the difference between a switchmode flyback power supply and one of the old AC transformer supplies (to help explain why capacitors used to have to be quite big!).

[@cocusar]

I think you reviewing soviet stuff has become one of my favorite topics of videos from your channel. Amazing!

[@rodlophus]

I think this channel is exactly what EEs (as myself) look for. After seeing a flood of clueless "engineers" "teaching" electronics on KZbin, your rant about transistors vs. optocouplers (@ 22:46) and the "disclaimer" at the end of this video made me very happy (actually, Patreon-grade happy ;)). Thank you very, very much for sharing all of this!!!

[@shivasisdash7343]

Carlsons lab, Shangoo66 , and Diode gone wild are the three best electronic channels on KZbin.No bullshits only main points which is understood by showing highly practical videos .and no shit edits..

[@crashlogger4283]

There's no need to shit on ElectroBOOM to praise a different creator. The channels are for very different audiences ranging from very amateur hobbyists with an interest in electronics and literal schoolchildren to professionals in the field. If you don't fit into the first category, it is only natural for you to find ElectroBOOM's content unentertaining.

[@kochegarishe]

мужик да ты крут! коробка индикаторов осциллограф советский.... :)

[@Elmantukas]

Im sure everyone in eastern europe had one of these, so did we! Was working beautifully and brightly for many years until it dropped and died. Great clocks.

[@KrotowX]

Very common clock from my childhood. We had these in form of large wall clocks in corridors and waiting halls. Basically the same circuit, but larger indicators. FYI: Common Soviet aluminium foil electrolytic capacitors often had very bad quality even for new ones.

[@RammSkz]

I've seen one of those still working at one of our local hospitals.😊

[@alancordwell9759]

Thanks for this very interesting video- great to see an in depth analysis of the Soviet IC's as well as the clock repair. I enjoy all your videos and the format of them is perfect.

[@beatrute2677]

Please keep making these vids man, your teaching method is awesome

[@maxinfly]

I have assembled similar when I was 15 as DIY from kit. Sweet memories

[@cagmito76]

Soviet equipment is fascinating stuff and looks like he has cornered the market of these alarm clock fluorescent displays !

[@johnwelbourn3811]

Keep the long videos coming DGW, enormously entertaining. It's always good to see the old, ridiculously overcomplicated, Soviet era electronics

[@DiodeGoneWild]

Modern things are more overcomplicated :). You just don't see the complexity, it's hidden inside a chip that contains billion transistors or even in its software.

[@levetbyck]

@@DiodeGoneWild and trillions of nand gates..

[@liam3284]

The design is based on poor integration capabilities in Soviet IC fabrication. It is quite simple.

[@InsideOutElectronics]

This brings memory, i have built one like this myself when i was a kid. I wish i still have it ;)

[@TheSpotify95]

17:51 "a certain country also needs it's main control chip replaced" priceless!

[@Tekwyzard]

Doesn't just need to be replaced, it needs a damn good slapping first.

[@erikziak1249]

😀

[@levetbyck]

lol

[@MrAtlantis95]

😂

[@Ayleen_Hazar]

^^

[@erikziak1249]

TOP content. Quality beats quantity. I highly appreciate this approach. Danyk, great work, as usual. Keep this philosophy of high quality, low "wow factor" videos. I do not need artificial drama or hype, this is much more valuable. Thank you.

[@diskettenfett3161]

Excellent videos, I really enjoy the old 60s/70s electronics from the Soviet Union. Remembers me when I still had time to tinker with vintage electronics for fun. Keep up the good work :)

[@nrml76]

It didn't feel very long at all. Absolutely fascinating!

[@antibrevity]

Cool that these displays were still being made in 1999! I always find it interesting which products survived past the Soviet era and which did not. As these clocks were apparently ubiquitous where you are, I could imagine someone trying to make a modern version as a retro product for those that still remember them, but obviously the displays might be impractical to manufacture. As with Nixie and vacuum tubes, you need specialty machines and the expertise to use them and much of that has already been lost. I really like that people are reviving the art of Nixie production, but their products are ridiculously expensive :(. Things that were once cheap-as-dirt, embarrassingly antiquated commodities made by people considered peasants are now boutique luxuries made by people considered artisans.

[@mjouwbuis]

VFD's are still used in Western and Far Eastern consumer electronics. I roughly estimate the average household has on average 2 to 3 modern electron tubes: 1 magnetron and 1 or 2 VFD's.

[@eDoc2020]

Fortunately vacuum fluorescent displays are still being made for new products, such as the displays on Hi-Fi equipment.

[@douro20]

That's a military type fuse holder. And yes it is silver plated.

[@JeremySeitz]

Loved the video, especially the diversions and distractions! Nice to have a long one, fascinating stuff these old displays.

[@aicisha]

Super educational and interesting journey into this piece of vintage home electronics. Thank you! Two things to note: bigger caps will lower the ripple very little but they will cause higher inrush current when you plug it in and so you might change the fuse constantly, also lower rated fuse will cause you the same issues, so leave them like they are...

[@plainedgedsaw1694]

I think avoiding problems with inrush current is what slow blow fuses are for, ain't they?

[@aicisha]

@@plainedgedsaw1694 Just after posting my above comment I remembered about T-type fuses, so yup you are right. My initial mindset was to leave every component as original as possible

[@ronniepirtlejr2606]

It has a bad internal connection. You tried to burn through the corrosion & establish a new connection. Too bad it died :-( They are amazing pieces of Technology. Thank you for explaining everything to us, showing us how you fixed it & such a long video. I enjoyed it very much!👍

Its 2022 and now i finally know, that it is possible rejuvenate vacuum florescent display :D

[@KeritechElectronics]

The 9V battery is shorted on the old schematic, okay on the new. The latter is so much more logical and better at explaining the device's principle of operation. Thanks for the episode. One of my friends gave me an identical or very similar VFD tube and the video will be helpful in getting the thing up and running. I'd say "please don't be the guy who uses transistors just because he doesn't know how to use driver ICs" if the 74141 weren't gone. Tough choice now. You got a hot damn lot of cool stuff there. I also do, having had electronics labs for roughly 20 years. If not for space and finance constraints, I'd keep and get a lot more :)

[@DiodeGoneWild]

74141 and their soviet equivalent K155ID1 are quite common. I have like 500 of them if you needed...

[@KeritechElectronics]

@@DiodeGoneWild haha, now that's a stock! LOL I wonder if I find some in the stuff I'm getting from the mentioned friend. He's downscaling his lab, giving away most of the retro stuff to me, in return for some help with cleaning up the place and providing a loving home for the tubes, radios etc. Lots of nixies there! To think that my lab got so much cool stuff this year, and there's probably gonna be a lot more.

[@sanjikaneki6226]

@@DiodeGoneWild wow do you have a warehouse or something like that? i often see you with a ton of vintage stuff . How do you even keep track of it? not to mention find it. (Also how does one engineer get 500+ as in extras) ?

[@TheSpotify95]

Nice to see that you got the clock back into good working order! Seems like it needed a display and a capacitor... I wouldn't mind one of these old clocks either, they're probably much more reliable than the modern ones, and will last for a lot longer than anything modern. Most modern components and electronic items are designed to be throwaway, they stop working after a certain time and that's it. The only thing I would do if I had an old clock like this, or a nixie clock, is to try and create a better power source for it, as I'm not keen on having something permanently plugged in all the time to mains in case it fails.

[@ccdimage]

I like this long video. I like to learn how things work. I also liked the crazy funny free energy videos and things like that, I don't know if that channel still exists. It is better than "accidentally" shorting mains voltage every video.

[@fabiomuzzi7047]

Really nice video. And of course the comments about some country needing a replacement control chip and about tractors are priceless.

[@NaoPb]

Very nice video. I like clocks. I have no problem with this longer video. I'd like to see more of your clocks.

[@oggyosbourne]

I watch always hole videos from start to finish. Elektronika clocks are cool and on my buy list for sure.

[@ymirthefrostgiant]

Well done for making such an informative and thorough presentation. I want to analyse the multiplexing and chip sets of late 1960s / early 1970s calculators and this has helped a great deal. Your pronunciation of English is certainly unique but your use of English language is perfect. I suspect you are reading from text, possibly a very good translation, but using the stresses and emphasis of your own native language. But don't worry - every KZbinr has their own accent and all are interesting.

[@tudbut]

He is actually fluent, just has a thick accent

[@andycristea]

I like the longer videos. You do a very good job at explaining things and some explanations require more time.

[@winged_neko]

I agreed to the cat :D ...but still I made it to the very end, too. Thank you for the deep insight of the idea behind this clock.

[@adriansuhr]

41 minutes love it, old reliable tech.

[@pe1dnn]

I like looking at these soviet electronics, it is so weird and different from what I was used back in the '80. It's like being on a different planet, discovering the use of orange transistors, strange value resistors and odd part numbers with Cyrillic letters; a completely different world and hard to imagine it is not another planet but just an iron curtain that separated the world.

[@CanizaM]

To give a contrast on the other side of the iron curtain, in the 70s we had PMOS single-chip clock ICs, some of which are still made today. They use the mains frequency as reference and also use 2Hz as the setting frequency.

[@xsc1000]

In eastern block it was impossible to use mains frequency, because it was never right.

[@sammorris2721]

@@xsc1000 Was it due to trying to balance the load with output? Or was it just not that precise from the plant?

[@xsc1000]

@@sammorris2721 Yes it was the way how to balance the load. In the peak frequency dropped, in the rest frequency returned to nominal 50Hz. So in average it was always lower than nominal.

[@sammorris2721]

@@xsc1000 so phase issues then. That sucks. Especially for time keeping...

[@xsc1000]

@@sammorris2721 In fact till mid 80s there were still a shortage of installed power. And they prefered heavy industry over standard citizens, so there were even switch offs when power were needed by industry.

[@julianpreu3960]

Thankyou for the long and deep video!

[@danmanmgm]

You often blow my mind with something in your videos. Now it was the box full of displays. 😲

[@sfred]

It's interesting that western Ti chip based clocks used mains frequency and then had a simple oscillator as a backup, while this is a quartz clock, but from the outside they look very similar with vf displays, 9v battery backup, etc.

[@jirka2283]

Not possible here. Imagine you buy an expensive clock from the west, are very fond of it and then discover they are 15 minutes late a day, because the mains has 49,5 Hz and fluctuates horribly.

[@sfred]

@@jirka2283 The Ti chips can be set up for 50 Hz, but if the frequency is variable that won't get you very far.

[@hiteck007]

Mate your accent is difficult to understand but some very good information, I couldn't understand the Russian data sheet so I'm glad you explained it. I can't believe you had new parts on hand. It was really interesting.Good job

[@bsvsite]

в своё время мы такие конструкторы собирали, у меня всё ещё работают такие подобные часы с небольшими усовершенствованиями из журнала радио

[@CheapCheerful]

Great video! Incredible this was made in the 90s! Just shows you how far behind they were in Soviet times. Looks like something made in the 60s with bakelite.

[@xsc1000]

@Moraceae And also the country when if you entered grocery shop, there were near nothing to buy :-)

[@alex_zhak]

Some corrections: 1) alarm buzzer is generated by ИЕ12 (1 Hz on-off) and by autogenerator based on buzzer itself (it has 3 pins) and transistor. ИЕ12 is just a set of stobe generators. 2) you cannot replace the crystal on modern one without changing resistors and capacitors around it. Yea, inside the ИЕ12 it is typical invertor, but soviet crystals were different from western ones.

[@JLCPCB]

Very interesting video! 😁

[@rhodexa]

I think we all agree we love when you diverge a little from the main subject as we learn a lot xD

[@LunarHermit]

I really enjoy your longer videos. Very relaxing and informative!

[@gordshkafreeman7683]

голос электромонаха , поющий электронные проповеди, бесценен.

[@AW-hi2rg]

Как у тебя язык не устал только) Видео класс 👍 сразу видно что специалист.

[@Viktor-g8]

Thank you! Hello from Russia (USSR)! После пайки оставшийся флюс уберите с платы при помощи щётки смоченной в спирте. Плата будет выглядеть более аккуратной.

[@leagoo52]

Měli jsme tyto sovětské hodiny již začátkem 80. let. Fungovaly ale opravdu jenom chvíli. Pak se je jeden místní inženýr ještě pokoušel rozchodit, ale pak to vzdal a hodiny skončily v popelnici. Otřesné byly i ty knoflíky na ovládání, které tuším začátkem osmdesátých let byly jiné. Tyto hodiny se tu neprodávaly. Vzpomínka na dávno zašlou dobu. A měli jsme počátkem osmdesátých let také malou japonskou kalkulačku se svítivými segmenty na 1 AA baterii. Tehdy tady kalkulačky v podstatě ještě vůbec nebyly a učitelky ve škole zakazovaly kalkulačky používat. Kalkulačka měla kožené pouzdro, které krásně vonělo. Jinak to byl ale stejný šmejd jako ty sovětské hodiny.

[@German_byte]

Thank you for a fascinating video.

[@OntologicalQuandry]

WOW! The price being carved into the plastic really shows the stupidity of command economies. What an eye-opener!

[@isoguy.]

Really enjoyed the longer video you had more time to explain things clearly. Actually preferred the long video rather than the rushed ones. Thanks for taking the time to make such interesting and fun content. 🇺🇦🇬🇧

[@punpck]

Loved this detailed video!

[@dirk480]

Very interesting. Thanks for posting

[@GodmanchesterGoblin]

This was fascinating, thank you. The way that the ckock functionality is split between the first two chips is unusual, and I guess was determined by the level of integration that was possible with their silicon manufacturing at that time. I also note the potentially lethal fuse holder. Depending on which pin on the mains plug is live, there can be mains voltage at the back of the socket or on the metal ring near the front. In the latter case, if you are touching the metal part of the fuse holder and the tip of the fuse touches the metal ring then you may get a nasty shock. Such fuse holders were common in the UK the 70s but I think the rules changed in the mid 1980s so this type of fuse holder could no longer be used. Cylindrical fuse holders still exist but the connections to the fuse are much better protected.

[@genius1a]

I agree, I remember giving myself a nasty shock, when repairing the fuses of my fathers Pioneer amplifier from the 70ties. I had it running again and tried to stuff a second, seemingly unused fuse holder (it would have been for the 110 Volt part, but we use 220 V anyways as I found out later) with another spare fuse. It took months for me to touch the holders free of fear again, even when the main was disconnected. But I never failed to disconnect the main again before working on any electrical device...

[@DigitalIP]

Kitty pawing the carpet means Kitty is Happy, so thats good to see :)

[@JohnnyX50]

Dobry Den, Would be cool to to use a higher F oscillator and make a funky silly display out of it :D I heard your little comment about 'a certain country' needing its main chip replacing. Had me laughing a lot! :D Dekuji! :D

[@endastlur4788]

Nice vid! Amazing clock as well. Brings back a nice feeling to see theese old displays. I remember them as a kidd how a starred at them when I was in bed at night. I just loved the colour and find it peacefull in some way. I actually like your longer videos going in depht with things. Take care my friend. Allways love your videos.

[@mikemoyercell]

I really enjoyed. I love vintage soviet electronics. Very Cool!

[@RocRizzo]

Hmm… I wonder which country needs its main control chip replaced. I also wonder if it’s not the only one that needs its main control chip replaced.

[@ursulmusic]

Seems like you already know the answer.

[@RocRizzo]

@@ursulmusic I know of at least several.

[@westelaudio943]

Which countries do not these days? Not many probably.

[@sanjikaneki6226]

you can insert any country and you will probably be correct .

[@coldcathode76477]

22:47 the optocoupler comment deserves a special thumbs up 👍 Nice video as usual.

[@kna60]

Thank you for making us discover these unusual electronic pieces for us Westerners. Even the pyrographed price at the manufacture is surprising :)

[@GeorgePapadopoulos11]

I don’t know which year this thing was manufactured but it looks like it’s the same technology as the Apollo 11 used to go to the moon in the year 1969.

[@dcocz3908]

Love the old clock, your accent is kind of like what I'd imagine Welsh, Russian would sound like

[@milanhlavaty]

I suppose he's Czech, that accent is very typical...

[@laustinspeiss]

I enjoyed the literal pronunciation of the english words with your accent..! Screw becomes skree-ewe. Torn between the content and the accent. Good fun video.

[@Azaakiel20]

These clock look very cool with that blueish light :)

[@ЯСуперСтар]

It's more like greenish in reality. The camera recieves it wrong.

[@DiodeGoneWild]

some people call VFDs green, but I call them cyan or turquoise or simply "VFD color" :D. But the green plexiglass turns it into cold green.

[@johncoops6897]

I watched this until the very end, thank you for the long video! Funny to hear you talk about certain larger channels, but not fair to poke fun at them. Your content is different, much more technical but not crazy like MarcoReps! So, we watch you for the high quality content. And for your cat, of course.

[@atdzsny]

He's not poking fun: he's telling what he likes. I also don't like watching someone shocking himself and swearing every minute, so I don't watch that guy's channel even if he's quite clever. Even Dany does extreme things sometimes (e.g. angle grinder tricks), but he doesn't overdo it for my taste.

[@alexander3554]

13:10 I'm guessing that VT1 and VT2 create intermittent beeping of the alarm. VT1 buffers a low-frequency tap on the frequency divider and VT2 pulls that down when there is a signal from the second chip. If it is not being pulled down, VT4 is activated which powers the self-oscillating speaker circuit around VT3. So the circuit around VT3 generates a continuous tone which is interrupted at 1 Hz or so via the frequency divider.

[@DiodeGoneWild]

VT3 is surely an oscillator for the beeper and VT4 enables it. But the circuitry with VT1 and VT2 is odd. I get that its a logic AND for the 1Hz singal and the alarm output signal. But the way they are connected doesn't make sense. Maybe the collector of VT2 was meant to be connected to positive, not to VT1 emitter.

[@mikhail_z]

I have this clock in a DIY version (sold as a set of parts with assembly manual and without case and cables)

[@Galova]

Thank you for the video. It is fine that it is long. Such devices are interesting

[@raynor0666]

Thank you for very interesting video!

[@DiodeGoneWild]

Thank you for your support ;)

[@amrishhirani6096]

Old is gold Thank you

[@tabeschektabeschek1852]

Thank you! I have learned some new stuff from your in depth video! Keep on going...

[@AlexanderBukh]

That was awesome, we still have these at parents home.

[@pablos1349]

Měl jsem přesně tyto hodiny asi do r. 2010, pak se začaly čísla náhodně měnit a slabě svítily i vypnuté části čísel. Bez opravy fungovaly přes 25 let. Kupovány byly v Moskvě, u nás se neprodávaly. Pořád ještě vidím tu blikající dvoutečku :D

[@peteb2]

It's extremely rare to ever find such a personal-use appliance down under here in New Zealand if ever. There are however quite a few Soviet equipment that turn up in 'junk shops' & on a local online auction site. I have no idea why that is! Often test gear or some industrial application devices. Such equipment is always way over engineered and crazy robust! Comparing the Soviet digital clock & materials used for construction from similar appliance made in Japan in the same time (most common manufacturer of export product) is quite interesting. The Soviet one looks to have used very basic materials & is unusually not so robust & over engineered as other Soviet equipment we normally come across.

[@antibrevity]

17:50 Sneaky ;)

[@technixbul]

My favourite type of clocks, I have much newer and nicer design model from 94 "Электроника 6.14-03", I love those clocks, they are very simple and accurate. A whole box of displays!? Wow now that is a gold treasure, I used to find one new then they disappeared, even from the flee market.

[@timtim8468]

Got one of these, blue, with 4 tubes. Actually, all I did to it was cleaning. My model got a front glass, it's possible to turn it around, so the scratches are on the inside. Capacitor was in perfect condition, checked it.

[@samuelgilbert9734]

Excellent video! Thank you!

[@a.lisnenko]

You are learning something by yourself, but when you give knowledge to people it is called teaching. :-)

[@DiodeGoneWild]

Thanks, I know this rule, but I keep forgetting about it ;). In Czech, you learn yourself and you also learn somebody else.

[@a.lisnenko]

@@DiodeGoneWild In Russian too, different endings, except Преподавать. :-)

[@a.lisnenko]

@@DiodeGoneWild Russian guy teaches Czech person English language in English. :-)

[@Tigrou7777]

Sunday, cat, soviet device & electronics = instant thumb up

[@bigvladukraine]

У 86 році купував такий конструктор та сам паяв. Гарний був годинник 😊

[@AlexanderBukh]

Nice pile of spares, too!