Coil wrapping ?
mowhoong - 10:47 06-09-07
I had seen a coil wrapped in twin wire. If I design a coil with 1000
T, I use two wire together,
so it mean that I only wrapp 500 T, hence it save my time and
work.Dear members... Read More
|
|
|
|
|
|
555 timer help
Bob1001 - 21:57 02-12-07
I am new to this newsgroup, I am typically a poster on rec. pyro or
metalworking, but I have been working on a new project. I am trying
to
make an ignition coil for my new turbi... Read More
|
|
|
|
Coils
KBSoftware - 19:31 11-08-07
I a bit new to electronics, about 1.
Now I'm learning about coils, and have a few questions.
I have some coils and I know their Henry rating, I've found a lot of
information... Read More
|
|
|
|
Re: Switching AC w/ Logic Level
Jamie - 20:03 31-05-07
jecottrell65@gmail.com wrote:
> I've found a few threads but nothing with exactly looking for what I'm
> looking for.
>
> I need to switch 24VAC (HVAC control) and 120VA... Read More
|
|
12V relay surging
02:24 19-05-07
One problem here hopefully I can get this to work..
I wired a an automotive relay to drive a 12VDC RV water pump.
from a power supply,
12V+ going to 30 and 87 output to pump.
... Read More
|
|
sizing a freewheeling diode for a coil
Matt - 23:28 01-06-07
I am controlling the coil of a relay using a switching transistor. To
protect the transistor I intend to use a freewheeling diode in parallel
with the coil. I'm not sure of t... Read More
|
|
|
|
|
|
meaning of impedance(about imaginary part)
kanica - 07:34 27-02-08
When I measured impedance of the RF system, I discoved decreasing
imaginary part(minus value). but!! it is minus value(like -5 -10
-12...) and the real part of impednace was incr... Read More
|
|
Vehicle detector
Roger Dewhurst - 16:52 12-09-06
Would a multi turn coil, a metre or two in diameter, buried beneath the
surfce of a driveway, with the ends of the coil connected to the input pins
of a operational amplifier ser... Read More
|
|
Re: Using a relay
John Popelish - 11:33 24-04-07
Jan Nielsen wrote:
> I got a relay I cant figure out how to use, it as 5 connectors.
>
> Its a finder 36.11.9.005.0000 5V(dc) 10A 250V(ac), I dont have a
> datasheet for ... Read More
|
|
Coil driving
Nuby - 13:58 13-10-07
What's wrong with this picture?
TTL control lines with small current sinking capability (say 20ma)
need to activate electromagnetic coils (50VDC, 300ma). Each control
line ga... Read More
|
|
|
|
|
|
Tesla coil parts - where to salvage?
Kasterborus - 14:11 13-02-08
Hi,
I'm trying to put together a Tesla coil following plans for a vacuum
tube based design.
I need to find the following parts, and wondered if these could be
salvaged from... Read More
|
|
Current meter using GMR
Gianni Mariani - 22:20 13-10-07
I've come up with some ideas that use GMR
(http://en.wikipedia.org/wiki/Giant_magnetoresistance) to measure
current flowing in a wire. Does anyone have a similar idea ?
T... Read More
|
|
|
|
240V relay contact suppression
MarkMc - 14:02 21-08-06
Hi
I'm using a relay with 240VAC coil and 240VAC contacts. From what I've
been advised before with relays (not 240VAC), I understand it's a good
idea to protect the contacts ... Read More
|
|
|
|
Re: Capacitor size
w_tom - 19:04 30-08-07
On Aug 30, 8:49 am, Jan Nielsen
wrote:
> I have solved some of the problem with capacitors, its not perfect, but
> alot better than before.
>
> I added ....
>
> It ... Read More
|
|
3 pole dc motor with commutator?
BobG - 14:10 24-03-07
The standard slot car motor was a 3 pole mabuchi motor with two
magnets on the side of the case. The poles were 120 degrees apart. I
assume that every 60 degrees, the next pole w... Read More
|
|
Re: FM Crystal Radio
Mike - 20:31 23-12-07
>
> That's exactly the same circuit I was looking at. Uses a small
> diameter coil so I can build a set into a plastic project box. How
> many meters of wire would a need ... Read More
|
|
|
|
|
|
|
|
|
|
|
