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MEMS relays are back!

https://menlomicro.com/
13 comments posted 4yrs
posted by jlarkin
13 comments posted 4yrs posted by jlarkin

Fast PNP?

Hi, all, A couple of years ago the last mainstream maker (NXP) stopped making the last fast PNP--the 5-GHz BFT92--thus...
7 comments posted 4yrs
posted by pcdhSpamMeSenseless
7 comments posted 4yrs posted by pcdhSpamMeSenseless

Looking for fast-ish sot-89 NPN

Hi, I'm trying to build a 2-200 MHz isolation amplifier. For 13 dBm I need abt. 120 mA peak current, 70 mA quiescent. T...
7 comments posted 4yrs
posted by dk4xp
7 comments posted 4yrs posted by dk4xp

crosstalk

https://www.dropbox.com/s/zaf7w7t71jmc820/Xtalk.jpg?raw=1 PCB layout people like to pack traces in nice tight bundles,...
18 comments posted 4yrs
posted by jlarkin
18 comments posted 4yrs posted by jlarkin

Hacking CCS from OBC

Here is an image of the On-Board Charger: http://zoopow.com/leaf/PXL_20210210_233550127.jpg Is it sufficient to just ta...
6 comments posted 4yrs
posted by edward.ming.lee
6 comments posted 4yrs posted by edward.ming.lee

How much current to kill an insect?

I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and...
65 comments posted 4yrs
posted by CK1
65 comments posted 4yrs posted by CK1

Large scale RF shielding

Homes, here, tend to be reasonably opaque to RF. OTA broadcasts can only be received with a rooftop antenna (despite th...
46 comments posted 4yrs
posted by blockedofcourse
46 comments posted 4yrs posted by blockedofcourse

more gold FR4

I was almost out of the ENIG gold-plated FR4 that I dremel for proto circuits, so we had Cirexx make us some more. This...
50 comments posted 4yrs
posted by jlarkin
50 comments posted 4yrs posted by jlarkin

Active differential power rail probe

I've been doing some power rail noise/ripple measurements lately. It seems like the generally agreed best practice is t...
22 comments posted 4yrs
posted by dominic
22 comments posted 4yrs posted by dominic

AutoExpreso system "kidnapped"

The highway toll system in PR has been hacked by ransomware and an undisclosed amount is being demanded to restore it....
0 comments posted 4yrs
posted by gnuarm.deletethisbit
0 comments posted 4yrs posted by gnuarm.deletethisbit

OT: Eternals

Amusing to NOT see a Stan Lee cameo. _Endgame_ must have been his last? RIP OTOH, I don't recall any prior reference to...
0 comments posted 4yrs
posted by blockedofcourse
0 comments posted 4yrs posted by blockedofcourse