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Sci.Electronics.Basics
Sci.Electronics.Basics is a worldwide Usenet news group that is used to discuss basic electronics questions.
There are 4626 threads in our archives.
You are looking at page 20 of 463.
The threads with the newest articles are listed first.
Derate switch for DC? [3 articles]
amdx - 2009-10-17 23:23:00
I'm looking for switches to control standard automotive 12v relays.
Coil current is about 200 milliamps.
I need mom/off/mom in spdt and dpdt. All I find are 125v and 250v
switches with various curr...
741 gain
cc - 2009-10-17 19:04:00
Thank you all.
It's set up as simple inverter, with (+) pin to ground via same R as
the input R and only 100Hz.
Still working on it, but I replaced the F/B circuit with only 10ohms
(R) between s...Blinded By The Light! [4 articles]
Ron Hubbard - 2009-10-16 17:17:00
Recently I had a peculiar experience with a car driving up the street.
This car had on its top a very thin pipe that flashed very brilliant
red and yellow flashes in a random pattern.
There was n...error in translation [2 articles]
ikke666 - 2009-10-16 15:39:00
it ain't spool in english (a translation error on my behalf) but coil.
What's the formula to calculate the force between 2 coils?
...How do I initialize a D flip-flop? [5 articles]
2009-10-16 13:29:00
Hi, I'm working with a 74AC74 D flip-flop. I wanted it to power up in
a predictable state namely with the Q output low. The CLR pin is
active low so at power up I have to keep the CLR pin low for ...Vector Network Analyzer Question
ssylee - 2009-10-16 02:17:00
I don't know how the display processor block of a VNA usually work. I
have scoured through a few application notes, but they don't describe
a whole lot about how it works. Does the display processor...Trying to hold stepper motor and measuring [15 articles]
aleksa - 2009-10-15 23:33:00
The stepper is turning and I try to hold it (with my fingers, or
something stronger).
How can I sense and measure the resistance I'm applying to the
stepper?
The resistance in not strong enough ...spools [2 articles]
ikke666 - 2009-10-15 14:07:00
What's the formula to calculate the forces 2 spools have on eachother?
...OT a tiny ray of hope? [5 articles]
default - 2009-10-14 11:48:00
http://www.gizmag.com/envion-plastic-waste-to-oil-generator/12902/
Two excerpts:
The ground-breaking Envion Oil Generator (EOG) gave its first public
performance at the Montgomery County Soli...Can a single supply op amp be used for a summer? [19 articles]
Andrew - 2009-10-10 18:06:00
Hello,
I'm working on a circuit where I want to shift/scale a 0-5V input to
1-5V. I am using single supply op amps. Can a summing circuit be
built using single supply op amps?
thanks
...