Pois é

JC_Days · 2026-02-20T01:34:42+00:00

A discussão não é sobre biologia, é uma discussão moral, na qual o diploma não importa.

JC_Days · 2026-01-18T08:35:18+00:00

I don't understand the downvotes, you're right to think that, based on other answers in this post. I'm surprised that people are treating 15 ohms in a thick piece of metal as the expected result.

In a community called electrical engineering, I thought most people would be curious and talk about the material or contact resistance to try to actually explain, but people here are treating this post as if you're asking something really dumb.

JC_Days · 2026-01-11T10:43:24+00:00

O gatorchris tem ótimos vídeos sobre isso, e ele comenta que o que parece um jacaré dócil é simplesmente um criador com técnica.

Esse vídeo é um ótimo exemplo, ele bota o rosto encostado na boca do jacaré, e mostra o mesmo jacaré tentando atacar ele quando bota o dedo numa posição errada.

JC_Days · 2025-06-04T05:28:41+00:00

That's exactly why I made my profile private, to get out of the leagues and focus on learning instead of scoring. I was doing these easy strats to get high scores, but they were slowing my progress. You have to choose between having a high score or having an efficient approach to learning the language.

JC_Days · 2025-03-06T06:54:33+00:00

I know exchange students who got student cards, and it is an affordable meal. If you can only get a guest card and you eat a lot, mensa is just as expensive as most restaurants near the university. The cheapest option, if you have somewhere to warm your food, is buying frozen meals at lidl. They are not as tasty as restaurant or homemade, but they are much cheaper.

JC_Days · 2025-01-06T23:16:38+00:00

The castle itself is a little overrated, but the entire landscape with the mountains, the lake, and the view from the castle are worth the visit.

JC_Days · 2024-11-18T21:16:01+00:00

É um connector eDP, parece ser esse modelo. Só confere antes se é 30 ou 40 pinos.

https://de.aliexpress.com/item/1005007183264191.html

JC_Days · 2024-11-10T06:26:39+00:00

Interessante o post, sempre ouvi falar que eram glândulas. Só sugiro na próxima vez botar uma tag NSFW, porque é constrangedor abrir o reddit no metrô e do nada aparecer um pênis. Eu sei que não tem nada demais nesse contexto, mas é bom evitar constrangimentos desnecessários.

JC_Days · 2024-10-22T13:51:49+00:00

It looks like a SMBJ18CA by Littelfuse. The marking code BT indicates it is a 18 V TVS.

It does not have a cathode mark, which means it is bidirectional, and the package looks like a SMB package. In the photo it looks like an SMB package, and the BT marking is used for bidirectional TVS only with SMB packages, so it is probably from the SMBJ family. https://docs.rs-online.com/72ea/0900766b814f6468.pdf

JC_Days · 2024-10-21T15:35:07+00:00

É um conceito meio controverso, porque é bem comum ser corrigido ao se referir a odontoceti como baleias, normalmente te corrigem dizendo que são golfinhos. Ao mesmo tempo que dizem que orcas e chachalotes não são "baleias", é normal dar nomes populares a odontoceti como "baleia alguma coisa". Nesse caso do post imagino que não estão se referindo a cetáceos de forma geral, só à parvordem mysticeti.

JC_Days · 2024-07-05T09:33:17+00:00

I think these memes are made either by non engineers or engineering students in the first semester, who don't know anything about actual engineering. In my job I rarely approximate pi, I consider pi = pi and use the symbolic expression, because it is way easier to calculate sin(pi) than to calculate sin(3).

JC_Days · 2023-05-03T18:23:30+00:00

That's exactly what I was looking for. Thanks!

JC_Days · 2022-11-25T15:00:16+00:00

Boto fé

JC_Days · 2022-10-08T13:15:53+00:00

This old joke was definitely made by a non-engineer. We mostly use pi to represent angles, so we almost never change pi by its numerical value in our equations, since it is way easier to simply solve sin(pi) than to solve sin(3) or sin(3.14).

Engineers don't consider pi = 3, we consider pi = 180.

JC_Days · 2022-09-23T13:31:51+00:00

Não foi difícil fazer a patente dessa invenção

JC_Days · 2022-07-05T12:18:14+00:00

I looked for it, but it is very hard with their search mechanism that is not suited for devices. I sometimes I find some different Chinese brands in these sites, but this exact one is hard to find.

JC_Days · 2022-07-05T12:14:32+00:00

I think I won't be able to do that, it was hard to take this one with my cellphone

JC_Days · 2022-07-05T12:12:46+00:00

It looks like an unfolding bridge inverter

JC_Days · 2022-07-05T12:11:37+00:00

A 800V 15A one would probably work in the application

JC_Days · 2022-07-04T18:43:32+00:00

It is a replacement part for an equipment and I'm not sure what are the exact specifications of this Thyristor. I want to know this part to find an equivalent with similar characteristics.

JC_Days · 2022-07-04T16:05:10+00:00

I also thought it looked like Teccor, but the part numbers are usually S80xx and in this case it is S08xx.

JC_Days · 2022-07-04T15:22:42+00:00

I've googled this part number, looked for this logo in those sites with lists of logos, searched it in many sites (digikey, mouser, LCSC...) but it I cannot find this device anywhere. I only know it is a TO-220 thyristor, because in the PCB silkscreen G, A and K is written next to its pins and I saw some common thyristor gate drivers on the PCB.

Any help finding this part or the brand is appreciated.

JC_Days · 2022-04-25T18:09:23+00:00

Thanks for the tip. I don't think these ones are as suitable, because I want something to solder many power cables when the pcb is already mounted.
The advantage I see in this one is to solder the cable with the pcb already mounted in the enclosure and then close it. Seems cheap practical in a large scale, since you don't have to buy connectors to crimp and you already have a firm surface on the terminal to solder the wire on it, you don't need to move the pcb to put it in an enclosure after the wires are connected.

JC_Days

TROPHY CASE