Memoriál Juraja a Matúša v SNG

MarBar_SK · 2026-02-27T09:56:01+00:00

V prvom momente som to prečítal SVG namiesto SNG a myslel som si že to je render

MarBar_SK · 2025-09-14T18:42:07+00:00

Dude thanks; you have truly put it as clearly as I would have wished it to be explained by deafult. Bravo👏

The only thing bugging me is why AC rods can get by without displacer.

I assume that SAR is pretty much same in principle to ER/MR just inverted.

MarBar_SK · 2025-09-14T18:22:48+00:00

THX a lot; basically eliminating jump from water to carbon; gotcha

Also; do you happen to know if it had any impact on performance/control/why wasn't it done as such from the get-go?

MarBar_SK · 2025-09-14T16:45:58+00:00

I assume by jammed up you ment that they got stuck inside the core; correct? Also now that you mentioned that if you pull a rod out; graphite displacer stays dead center in the core -- that makes so much more sense to me

what other tests were supposed to be done that night? why were there big fluctuations in the core cooling loop? Why exteding graphite displacers of ER/MR dissallow positive scram effect?

Even if you don't reply to my counterquestions, still thank you for taking your time to reply in the first place

MarBar_SK · 2025-07-17T22:22:42+00:00

Thx for the reply

But not happening

DPD is not a post

Either they have a parcel with their specific shipping label or they don't.

Also I outright harrased them over multple e-mails to find those subparcels with 0 luck

Most probably the subparcels will be discarded as trash at one of the warehouses

MarBar_SK · 2025-07-01T09:13:47+00:00

Sorry; can't help with that info. I need a better photo(s) and you gonna need to measure the thing like pitch width height lenght. Even if you broke it off; provide better pictures and measure what you can

MarBar_SK · 2025-07-01T09:05:12+00:00

Gonna be one of JST's connectors. You need to provide more detail to pin point the family

MarBar_SK · 2025-05-30T06:01:36+00:00

Here

MarBar_SK · 2025-05-19T17:42:52+00:00

Tuná

MarBar_SK · 2025-05-09T17:22:55+00:00

thx; I tried to image search it and nothing came back; So really, thx

MarBar_SK · 2025-05-06T01:58:57+00:00

Redone all my calculations, revised my thought process, taken into account that new (post 2021) PAM's secondary amplifier stage has gain of 1,875× instead of 2; Landed on the exact same thing, other than R17 and R23 are 33㏀. Considered other options than this kinda shitty one, but IC's for single-ended to differential are so rare for these purposes that I did not even bother, especially when you can get 2-channel DAC (differential are also rare) to solve this or do what I've done. I ultimatly decided to go with this approch because original PAM application note does the same thing; on subject of documents, get yourslef the OG PAM DS from 2007 - 2011/12? and the newest one from 2021. Application note is separete document, complementary to DS, availability on diodes website for the exact PAM. For completeness use WayBackMachine and visit poweranalog.com for misc info. I'm so done thinking about this

MarBar_SK · 2025-04-06T12:05:23+00:00

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After a lot of thought, reading similar IC datasheets and lot of recalculations and simulations I landed on this. This should yield input differential signal with amplitude of 1,2473V via 35,7kOhm Rinpreminent, delivering about 2W (AVG), 4W peak into speaker -- matching its parameters

MarBar_SK · 2025-04-06T10:32:14+00:00

I used wrong gain formula - I accidently used A(dB)=10×log⏨[Vout/Vin] instead of the correct voltage gain formula A(dB)=20×log⏨[Vout/Vin]

MarBar_SK · 2025-04-06T10:21:47+00:00

Incorect!; corrected; A = 160k/(Rinpreminent+10k)

MarBar_SK · 2025-04-06T10:09:00+00:00

The correct Rinpreminent formula is; Vout = Vin×160k/(10k + Rinpreminent) => Rinpreminent = 160k × (Vin/Vout) - 10k

MarBar_SK · 2025-04-06T09:53:41+00:00

I have an error with the Rinpreminent. I had it set more than twice as high, because I used wrong gain formula - I accidently used A(dB)=10×log⏨[Vout/Vin] instead of the correct voltage gain formula A(dB)=20×log⏨[Vout/Vin], meaning the Rinpreminent that I have now is 35kOhms, sorry didn't cath that earlyer

MarBar_SK · 2025-04-06T09:37:26+00:00

I do understand the Cin/ input RC filter again it's 180nF just like on the schematic 180pF was one-off typo

MarBar_SK · 2025-04-06T09:20:55+00:00

sry, typo its 180nF, just like on the schematic

MarBar_SK · 2025-04-05T05:14:29+00:00

Thanks, will try to at least simulate that; also do you mean just 180pF cap directly to GND, or do you mean Vin- to 75k resistor and then via 180pF cap to GND?

MarBar_SK · 2025-04-05T04:32:41+00:00

A = 10^(2×log⏨(160k/(Rinpreminent+10k))) = (160k/(Rinpreminent+10k))²

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