Electronics Design

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daily puzzle

A quickie. No diagram, but no need. Given a unit cube, vertices labeled ABCD on the top face, EFGH on the bottom; where...
4 comments posted 5yrs
posted by r_delaney2001
4 comments posted 5yrs posted by r_delaney2001

Re: OT: Kitchen appliance weirdness

>> > >>>> Cookers that switch power between different loads to stay under 13A >>>> are found at the cheap end of the sc...
7 comments posted 5yrs
posted by xxx.syseng.yyy
7 comments posted 5yrs posted by xxx.syseng.yyy

Lime skates

I looked at one of those Lime electric skateboards. It has a QR code sticker, and no other user interface, that I notic...
3 comments posted 5yrs
posted by r_delaney2001
3 comments posted 5yrs posted by r_delaney2001

Re: OT: Amazon is down

> Wierd. Wonder for how long. Maybe the fires? Idle curiosity: Is that a misspelling of 'weird' or 'wired'?
12 comments posted 5yrs
posted by lost
12 comments posted 5yrs posted by lost

SiTime Devices

I am considering using SiT8008 devices from SiTime. They are low power wit h good specs for simple digital clocking. I...
2 comments posted 5yrs
posted by gnuarm.deletethisbit
2 comments posted 5yrs posted by gnuarm.deletethisbit

Re: OT: Computer power supply on its side?

> My PSU has an "economy mode" that turns off the fan most of the time > the computer is barely being used (you know, l...
0 comments posted 5yrs
posted by bl
0 comments posted 5yrs posted by bl

New depletion MOSFET - BSS126

I happened upon this today while looking at other things... BSS126 - 600V, 500 ohms, Idss = 21mA. https://www.infineon....
8 comments posted 5yrs
posted by dagmargoodboat
8 comments posted 5yrs posted by dagmargoodboat

DVD regions

In the past it was written that a DVD drive in a PC could play any region, but then it was restricted to that region. W...
14 comments posted 5yrs
posted by fizzbintuesday
14 comments posted 5yrs posted by fizzbintuesday

Is there a newsgrop for Mozilla Thunderbird?

Just had a major hardware meltdown and in its wake also lost email access. Makes it very quiet here :-) Tried to transf...
27 comments posted 5yrs
posted by news
27 comments posted 5yrs posted by news

quad 200v power supply

Looks like my multi-channel cable pulser project is alive again, so I tweaked the power supplies. If I use avalanche tr...
0 comments posted 5yrs
posted by jjlarkin
0 comments posted 5yrs posted by jjlarkin

Speaker at C4

I'm having trouble understanding the ratings of speakers intended to be emb edded in equipment to produce simple beep s...
15 comments posted 5yrs
posted by gnuarm.deletethisbit
15 comments posted 5yrs posted by gnuarm.deletethisbit

more OT: Smoke in San Francisco

https://www.dropbox.com/sh/wyrjcsjemde1gqw/AACymDmZ2Ul7OZwed4XovQL5a?dl=0 As if enough wasn't going wrong already. I he...
39 comments posted 5yrs
posted by jjlarkin
39 comments posted 5yrs posted by jjlarkin

pretty OT: boats

Up here in the country, I see a lot of motor boats parked in driveways. I suspect that most are seldom or never used. I...
68 comments posted 5yrs
posted by jjlarkin
68 comments posted 5yrs posted by jjlarkin

SPICE microstrip dipole antenna model

I am experimenting with SPICE microstrip dipole antenna models. The series RLC lumped element model is assumed. For a h...
2 comments posted 5yrs
posted by dakupoto
2 comments posted 5yrs posted by dakupoto