Electronics Design

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How are abs max ratings set?

In one hand-wired proto recently,(*) I was using an LM319N open-collector dual comparator to drive the !set and !clear...
13 comments posted 3yrs
posted by pcdhSpamMeSenseless
13 comments posted 3yrs posted by pcdhSpamMeSenseless

Not OT: BC850 as a diode clamp?

A differential input amp is using BC850 transistors with the base tied to the collector as a clamp to ground. What is b...
32 comments posted 3yrs
posted by gnuarm.deletethisbit
32 comments posted 3yrs posted by gnuarm.deletethisbit

explain this

I have an old portable CD player, still works. Runs on 2 AA batteries. The other day, a CD was skipping, on the third t...
2 comments posted 3yrs
posted by r_delaney2001
2 comments posted 3yrs posted by r_delaney2001

Not sure if I'm oversimplifing this module ...

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 I picked up a few "capacitive soil moisture sensors" from amazon[1] a w...
22 comments posted 3yrs
posted by dan
22 comments posted 3yrs posted by dan

aioe.org is running in casters-up mode

It was unresponsive earlier this morning, and now redirects to a parking site. :( Cheers Phil Hobbs
2 comments posted 3yrs
posted by pcdhSpamMeSenseless
2 comments posted 3yrs posted by pcdhSpamMeSenseless

EPC2308

https://www.digikey.com/en/products/detail/epc/epc2308engrt/16784421 I recall some EPC suit saying that they would never...
4 comments posted 3yrs
posted by jlarkin
4 comments posted 3yrs posted by jlarkin

Easily Assembled Passive Component Sizes

I've always used 0603 (1608 metric) size passives as the minimum size in my designs to optimize manufacturing. I'm told...
11 comments posted 3yrs
posted by gnuarm.deletethisbit
11 comments posted 3yrs posted by gnuarm.deletethisbit

smallest 0603 cap

I need a tiny cap. This one is interesting https://www.mouser.com/ProductDetail/Walsin/RF03N0R1B100CT?qs=sGAEpiMZZMvsSl...
26 comments posted 3yrs
posted by jlarkin
26 comments posted 3yrs posted by jlarkin

OT, Tinnitus

I have a phone osc app, I fired it up to see if I could match the frequency of the ringing in my ear (s). I'm down 50 o...
6 comments posted 3yrs
posted by amdx62
6 comments posted 3yrs posted by amdx62

First Computer

I was watching the show Mail Call. It talks of anything military. Guns, artillery, ships, whatever. The narrator claime...
16 comments posted 3yrs
posted by deanh6929
16 comments posted 3yrs posted by deanh6929

P-channel MOSFET gate driver

I am building a transfer switch that has two 12v DC inputs and one 12v DC output, current is 10A peak and 4A normally....
6 comments posted 3yrs
posted by news
6 comments posted 3yrs posted by news

Analog (optical) filters

Before they were built into your phone's camera. From a Seattle Filmwork's catalog found among a late relative's persona...
13 comments posted 3yrs
posted by user
13 comments posted 3yrs posted by user

Boston Dynamics Robot Show

Under a minute and a half. No one selling hair gel.
2 comments posted 3yrs
posted by deanh6929
2 comments posted 3yrs posted by deanh6929

Shell buys Volta

I am voting NO. Volta is worth more than 86 cents. I would prefer it be acquired by ChargePoint. Shell EV charging netw...
2 comments posted 3yrs
posted by edward.ming.lee
2 comments posted 3yrs posted by edward.ming.lee