Electronics Design

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Sleeve dipoles

I an trying to get my brain around some aspects of vertical sleeve dipoles (in particular for 2-metres wavelength). I u...
13 comments posted 1yr
posted by liz
13 comments posted 1yr posted by liz

LT Spice window panes

Sometimes the schematic and waveform windows swap location or assume funny sizes. Any thoughts?
1 comments posted 1yr
posted by jl
1 comments posted 1yr posted by jl

Francophones

Do we have any French speakers on the Panel? I have a radio that's badly in need of realignment and the only instructio...
56 comments posted 1yr
posted by cd
56 comments posted 1yr posted by cd

Circuit Symbol

Gentlemen, A chum of mine who's into classic cars has asked me to take a look at the radio out of his 1938 Bentley whic...
41 comments posted 1yr
posted by cd
41 comments posted 1yr posted by cd

big L

What's the biggest inductor, the most Henries, that you know of? I seem to recall some audio transformer that was someth...
28 comments posted 1yr
posted by JL
28 comments posted 1yr posted by JL

Walkability

https://www.walkscore.com/cities-and-neighborhoods/ I wonder if they took into account that NYC sometimes gets wind chil...
5 comments posted 1yr
posted by jl
5 comments posted 1yr posted by jl

Datasheets and probability (2025 Update)

Hi, men - There are sometimes 3 columns on a datasheet which may contain min, nom, and max values. Like Vds for example...
10 comments posted 1yr
posted by Sophi.2
10 comments posted 1yr posted by Sophi.2

Re: ELECTRO-CHEMICAL ELAPSED TIME INDICATORS

On Sat, 14 Dec 2024 14:29:38 -0500, Joe Gwinn snipped-for-privacy@comcast.net wrote: >There was a question (from Larkin...
2 comments posted 1yr
posted by JL
2 comments posted 1yr posted by JL

ELECTRO-CHEMICAL ELAPSED TIME INDICATORS

There was a question (from Larkin?) on non-electronic time delay components, and I recalled such a thing from the 1970s...
4 comments posted 1yr
posted by joegwinn
4 comments posted 1yr posted by joegwinn

Re: Musk and space weapons?

> The US military is now talking openly about going on the attack in space: > https://arstechnica.com/space/2024/12/the...
0 comments posted 1yr
posted by bill.sloman
0 comments posted 1yr posted by bill.sloman

Re: Battery (SLA) modeling

> At a fixed time and temperature, is it safe to model a battery as a > fixed voltage source behind a series resistance...
14 comments posted 1yr
posted by newspam'''
14 comments posted 1yr posted by newspam'''

Re: Anti radiation vaccine?

> How 'Conan the Bacterium' withstands extreme radiation > New discovery finds simple metabolites combine to form a pow...
4 comments posted 1yr
posted by bill.sloman
4 comments posted 1yr posted by bill.sloman