Toots for cmb@cathode.church account

Written by Cosmic Meow Background on 2025-01-31 at 12:57

oke let's go!

=> View attached media | View attached media

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-31 at 11:25

i should also do a big version of this with SN6505B proper and a Würth 750315371 to see if it's würth it for 5W applications (but at least 3x the price)

i'm open to suggestions if anyone has better ideas/recommendations.

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-31 at 11:23

maybe i'm onto something, maybe this is a bad idea. only one or two ways to find out!

goal is to have a 5V/0.2A isolated supply for <1.5USD in small qty and <1USD in 100 or more.

all the commercial modules are quite expensive and/or have shitty efficiency. this should do >80% over basically the full range, but i'll need to test this one the bench.

=> View attached media

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-31 at 09:36

they make SN6505 clones and such with matching transformers tho, so that's cool

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-31 at 09:36

"Copyright©Oct. 2022,Very power Incorporated"

very name, much wow

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-27 at 15:16

my procrastiproject is going great, what's that, i need to draw yet another symbol. sure, just a few pins, right? 40 pins!? fuck that, ima work on what i should actually do.

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-27 at 11:26

weh. jlc needs you to contact customer support if you want to get the rp2350b assembled.

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-24 at 17:03

found some website that lists a bunch of standards and has an email attached. let's find out what it does! http://www.stdpdf.com/ (i sent a mail)

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-24 at 15:30

there's a lot to unpack here

(i love using installers on linux, this is so funnily anachronistic)

=> View attached media

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-23 at 21:14

with a loud bang it completed the combustion cycle, but luckily just once (a rubber plug popped out of the outlet)

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-23 at 21:13

here at @fafo we're professionals, we label the ports where gardena plugs are allowed to use on our vacuum pumps

=> View attached media

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-23 at 13:18

i will not scrape all the important mosfet manufacturers and make a biiiig table.

nooo. no way.

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-23 at 09:42

sometimes i wish the cosmic horrors would've stayed beyond my comprehension

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-22 at 16:03

alright alright alright, i think i got it: https://www.infineon.com/dgdl/Infineon-BSC072N08NS5-DataSheet-v02_01-EN.pdf?fileId=5546d4624ad04ef9014ae3d8e8192c7c

this is the FET. it's available, it's <1 USD for JLC assembly and i'm out of ideas where i could find something better. Qg could be lower but Rdson is pretty much the lowest i could find with those specs.

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-22 at 15:36

i lied, i don't have grass at home, come join me on my descent into madness drawing this compensation network

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-22 at 15:31

i should touch some grass

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-22 at 15:31

elen in the jlc part search, when Results remaining: 0

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-22 at 14:50

procrastinating assembling the BMS by procrastinating a DC/DC by doing another DC/DC.

damn my workdays are quite... monotone these days (i'll see myself out, sorry to anyone who gets that joke)

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-22 at 14:49

posts will get more deranged the longer i have to stare into all those friggin datasheets

=> More informations about this toot | View the thread

Written by Cosmic Meow Background on 2025-01-22 at 14:48

🥔 active emi filters

i just think they're neat

=> More informations about this toot | View the thread

=> This profile with reblog | Go to cmb@cathode.church account