Sci.Electronics.Design is a worldwide Usenet news group that is used to discuss various aspects of Electronic Circuit Design.
There are 12312 threads in our archives.
You are looking at page 1 of 1232.
The threads with the newest articles are listed first.
Posted by Andy K - 18 minutes ago
I have 3 led lights that operate using 4.5 volts D.C.
Instead of frequent replacement of 1.5 volt AA batteries, I would like to use a
12V 5AH Sealed Lead Acid Battery.
What would I need to step...
John Larkin Highland Technology Inc
Started by Unknown 48 minutes ago
We're using a buck switcher, LM2574HV-5.0 in SOIC package on a custom PCB. =
The load is less than 200mA and the input voltage can vary, but most testi=
ng as been at higher input voltages, around ...
Started by Unknown 4 hours ago
Is anyone aware of a transmitted or hard-wired system that allows one
to dial in a phone number on a production model cell phone and engage
in a two-way conversation remotely.
IOW over a distan...
Posted by George Herold - 6 hours ago
Transfer of energy by thermal radiation. (thinking out loud at the SED.) =
So I've been calculating numbers for heat transfer. The radiation transfer=
between two surfaces at different tem...
As you guys know, I'm a retired nuke. Recently I found some mailing
lists for serious amateur nukes and that has caused me to "get my nuke
One thing a lot of people were com...
Started by Unknown 7 hours ago
That takes care of the obviouly fake papers, now to move on to the faux papers, most...
A bit of fuzzy logic
Needed a circuit that disconnects the Lipo battery from my solar powered geiger counter SDcard logger when Lipo voltage drops to below about 3.1 V,
this to protect that ba...
Posted by John Larkin - 8 hours ago
I'm continually astounded by how many big companies are brutalized by
their own shipping and receiving departments. Things are lost, in
limbo, in quarantine in Warehouse 99 until people sign off...
Started by Unknown 9 hours ago
I saw recently a movie about the Seals' disaster in the mountains of Afghanistan.
For those who saw it, I'd like to make a few comments, suppositions as an analyst.
1. The 4 Seals could have kill...