Electronics Design

DRC and split planes

Hi All, I am using Protel PCB 2.8. Yes it is ancient (1995) but it works, does all I need, and I know how to use it :)...

21 comments posted 5yrs

posted by nospam

21 comments posted 5yrs posted by nospam

HVDC line grounding system question

I posted this to alt.engineering.electrical and it was suggested I post this here since this group is more active than...

6 comments posted 5yrs

posted by moroney

6 comments posted 5yrs posted by moroney

Bezels

I'm designing a project with a small LCD on the panel. Where can I go to find a matching bezel? There's gotta be an Amc...

17 comments posted 5yrs

posted by wb8foz

17 comments posted 5yrs posted by wb8foz

Laptop power supply torroid filter

I have a torroid filter on the end of my laptop's power supply cord right by where it enters the laptop. I know that th...

8 comments posted 5yrs

posted by none

8 comments posted 5yrs posted by none

olden reluctance motor

What's the story of small NEMA 23-ish sized reluctance motors like this? https://www.ebay.com/itm/RAPIDSYN-20R-07AA-832...

0 comments posted 5yrs

posted by presence

0 comments posted 5yrs posted by presence

really tiny uP

I'm thinking that a tiny uP could realtime compute the power dissipation of some EPC GaN fets and shut down if they get...

31 comments posted 5yrs

posted by jlarkin

31 comments posted 5yrs posted by jlarkin

Intelligent feed forward digital power supply

Hi I am working on a digital power supply, using a STM32 microcontroller I have standard digital control working, but w...

11 comments posted 5yrs

posted by klauskvik

11 comments posted 5yrs posted by klauskvik

DAC tester

We want to use a fast dual DAC, the DAC2904, but I don't understand the timing, specifically what happens on the WR and...

21 comments posted 5yrs

posted by jlarkin

21 comments posted 5yrs posted by jlarkin

Modeling the Base Spreading Resistance

On this webpage, under the heading "Popular models", I see many BJT transistor models: https://en.wikipedia.org/wiki/Tr...

9 comments posted 5yrs

posted by sepflanze

9 comments posted 5yrs posted by sepflanze

nice DVM

My old handheld finally got weird, so I got a Fluke 17B+ from Amazon. It's really nice. It measures capacitance, freque...

51 comments posted 5yrs

posted by jlarkin

51 comments posted 5yrs posted by jlarkin

Coating on metal to minimize the reflection of electromagnetic waves

We want to minimize the reflection of electromagnetic waves: www.leobaumann.de/ReflexENG.pdf :)

20 comments posted 5yrs

posted by ib

20 comments posted 5yrs posted by ib

OT. Improvements and Inventions

Some things that have made life better for us. Improvements. Actual inventions. From ancient China. Mr. Moen's scare led...

16 comments posted 5yrs

posted by deanhofman

16 comments posted 5yrs posted by deanhofman

different active antennas

here some different active antennas: www.leobaumann.de/usafunk.htm regards :)

14 comments posted 5yrs

posted by ib

14 comments posted 5yrs posted by ib

Collins-filter calculators

here 2 different Collins-filter calculators, where You can pretend one of the 3 elements: www.leobaumann.de/usacollins_f...

0 comments posted 5yrs

posted by ib

0 comments posted 5yrs posted by ib

Antenna impedance calculator

Sometimes we scientists need the antenna-impedance for our calculations- different antenna impedance calculators for di...

7 comments posted 5yrs

posted by ib

7 comments posted 5yrs posted by ib