Electronics Design

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Ir remotes

My understanding is that Ir remotes modulate an Ir "carrier" signal in a particular pattern to express a particular "co...
3 comments posted 2yrs
posted by blockedofcourse
3 comments posted 2yrs posted by blockedofcourse

smart people doing stupid things

https://www.youtube.com/watch?v=5Peima-Uw7w See graph at 9:50 in. I see this a lot, engineers wanting to do complex stu...
27 comments posted 2yrs
posted by jjSNIPlarkin
27 comments posted 2yrs posted by jjSNIPlarkin

ac138

Anyone know of an ic similar to the hc/ac138/238 (16 pin, 1 input to 8 output multiplexer) but with outputs of the open...
8 comments posted 2yrs
posted by ht
8 comments posted 2yrs posted by ht

Re: "Safe" cell phone WiFi capabilities?

> For "nominal" cell phones (i.e., taking into consideration > that not ever subscriber buys The Latest and Greatest),...
8 comments posted 2yrs
posted by newspam'''
8 comments posted 2yrs posted by newspam'''

fast discrete PHEMT one-shot

https://www.dropbox.com/scl/fi/agatzclr8pvr5470g6mc4/Phemt_One_Shot_1.jpg?rlkey=cwnx0qd7ajgnh8otf627x5lku&raw=1 Regular...
14 comments posted 2yrs
posted by jjSNIPlarkin
14 comments posted 2yrs posted by jjSNIPlarkin

Re: Dressing RG6

> I've several short (a few feet) lengths of RG6 that I > would like to "strongly coerce" into assuming a particular >...
27 comments posted 2yrs
posted by pcdhSpamMeSenseless
27 comments posted 2yrs posted by pcdhSpamMeSenseless

Re: The end of stackoverflow?

> Stack Overflow users sabotage their posts after OpenAI deal > https://arstechnica.com/information-technology/2024/05/...
7 comments posted 2yrs
posted by sylvia
7 comments posted 2yrs posted by sylvia

OT: Auroras

Anyone in Europe seeing Auroras? https://www.swpc.noaa.gov/products/aurora-30-minute-forecast#
2 comments posted 2yrs
posted by Wanderer<dont
2 comments posted 2yrs posted by Wanderer<dont

Another design

Now with 9V to 15V input range, direct gate drive and 500mA LED current. Startup behaviour is not ideal but maybe that...
22 comments posted 2yrs
posted by invalid
22 comments posted 2yrs posted by invalid

Designs

Somebody neds to post a design... so here's one! https://imgs.xkcd.com/comics/circuit_diagram.png -- Jim Whitby Uniform...
4 comments posted 2yrs
posted by news
4 comments posted 2yrs posted by news