Schematic from the game 'Stray' - Page 1
Forum section: electronics / general

author: blinky87
author_rank: Newbie
timestamp: July 24, 2022, 10:20:27 am
content: Hi allwas watching a streamer and this schematic was on the wall but upside and flipped etc. What would it do? I see ACDC conversion going on at least. Please excuse the awkward removal of the streamer

author: niconiconi
author_rank: Frequent Contributor
timestamp: July 24, 2022, 10:47:54 am
content: It definitely looks like some kind of switched-mode power supply. There's obviously a bridge rectifier at the left side, the transformer seems to be a step-down one, I think the label says "24 V". in the middle there's are multiple chips, each with a series output inductor, and a parallel diode between the ground and the output, this is a textbook buck converter. Notably, the power converter at the top right says "OPTION 11 AMPERE". At the rightmost side of the schematic it shows a battery. I also see +5 V and +12 V labels around here. Finally I can also recognize the word "charger" in the title block at the bottom right.So yeah, a battery charger implemented by a linear AC-DC power supply, followed by switched-mode DC-DC converters.

author: blinky87
author_rank: Newbie
timestamp: July 24, 2022, 11:04:31 am
content: That's brill. Thank you for the detailed and polite response. I had charger also!

author: Cyberdragon
author_rank: Super Contributor
timestamp: July 24, 2022, 05:37:16 pm
content: There's several schematics used as decorations. Another one appears to be a discrete transistor OTL amp, though it is possibly incomplete as there are current shunts on the output transistors not being measured by anything.

author: MuhScopeBroke
author_rank: Contributor
timestamp: July 28, 2022, 01:41:51 pm
content: This is pretty, cool. I wonder how they came up with these models? Any other games have anything remotely like this lol

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: July 28, 2022, 02:11:08 pm
content: I cranked up the contrast a bit.

author: free_electron
author_rank: Super Contributor
timestamp: July 29, 2022, 11:47:45 am
content: looks like something from a magazine. probably french. "batterie" "amperes"classic diode bridge but also a boost converter with a diode OR , then a switching stepdown with optional parallel stepdown for current doubling.

author: abquke
author_rank: Regular Contributor
timestamp: July 29, 2022, 12:16:46 pm
content: Pretty much what niconiconi said. AC into some switchers and into a battery. Not unlike a USB charger wall wart thing, but much beefier.

author: willwhang
author_rank: Newbie
timestamp: July 30, 2022, 09:22:37 am
content: Here is another one which is a 200W(!) ATX power supply:

author: willwhang
author_rank: Newbie
timestamp: July 30, 2022, 09:40:43 am
content: I think I found the one OP is asking, it's from this site:http://matthieu.weber.free.fr/electronique/chargeur/index.html@free_electron Thanks for pointing it out the wording is french. I just lookup "lead acid battery charger Schematic" in french and it shows up in the first couple of images.

author: niconiconi
author_rank: Frequent Contributor
timestamp: August 06, 2022, 03:39:39 am
content: Quote from: abquke on July 29, 2022, 12:16:46 pmTheir purpose and functionality are similar, but the implementations differ greatly. Nearly all USB chargers and wall-warts for electronics do ~KHz switching at the AC primary side at a high voltage to reduce transformer size. But this battery charger does a linear step-down first to 24 V using an old-fashioned 50 Hz transformer, and only performs DC-DC conversion at the secondary side. I guess for a heavy device like a lead-acid battery charger, the extra weight or size doesn't really matter (and since it's switched-mode the efficiency can still be high). From the schematics, it's also an easy way to allow an aux DC input.P.S: in my original answer I almost recognized the letters "LT" on the DC-DC chips, but I wasn't sure whether it was an illusion caused by reading too much Linear App Notes so I didn't say anything. It turned out I wasn't wrong, it was just that there's another National chip with "LM" on it that confused me.

author: kjr18
author_rank: Regular Contributor
timestamp: August 06, 2022, 05:04:31 pm
content: Another fun easter egg within this game: during one mission you need to turn on power generator that can supply 1.21GW.

author: Cyberdragon
author_rank: Super Contributor
timestamp: August 07, 2022, 07:35:53 am
content: Quote from: kjr18 on August 06, 2022, 05:04:31 pmLook closer at those characters there too...they'll look familiar.

author: jonovid
author_rank: Super Contributor
timestamp: December 22, 2022, 08:06:10 am
content: unlikely this schematic has anything deeper. my impression it is just added as wall art.having played all the Ratchet games up to playstation 4. I would give this Japanese style cat game, set in the age of robots, a 10 out of 10 .as a solid 15 hr single player platformer. they should make a sequel to Stray.

author: tszaboo
author_rank: Super Contributor
timestamp: December 22, 2022, 09:34:18 am
content: Quote from: bigfoot22 on December 22, 2022, 07:18:00 amI really enjoyed playing it. It had this great ambiance. Felt like every single screenshot could be a piece of art.

author: david77
author_rank: Frequent Contributor
timestamp: December 22, 2022, 10:41:24 am
content: If it's of interest to anyone: That schematic was drawn with SPlanhttps://www.electronic-software-shop.com/splan-80.html?language=de.Very nice and simple piece of software. Sadly the schematic editor and their layout tool do not communicate whatsoever. So useless for any type of serious work.Still useable for simple stuff.

author: AVGresponding
author_rank: Super Contributor
timestamp: December 22, 2022, 12:10:28 pm
content: Quote from: bigfoot22 on December 22, 2022, 10:17:03 amGiven that the game devs are ex-Ubisoft Montpellier, it's no surprise to see a schematic in French. I'd expect the TE to be similarly French/Belgian/Dutch etc, and indeed it looks very much like a Philips combined RF gen and counter, possibly one they created themselves by merging two or three images together; either way it gives of a definite Philips vibe.

author: free_electron
author_rank: Super Contributor
timestamp: December 24, 2022, 08:05:40 pm
content: looks like a BERT to me. biterror rate tester

author: daqq
author_rank: Super Contributor
timestamp: December 24, 2022, 08:49:54 pm
content: Looks similar to a paper chart recorder - I seem to remember that color theme and the knob configuration.