|
|
 Up |
|
|
  |
Author: pthakurpthakur
Date: Sep 23, 2008 00:55
Indian PM reaches Frankfurt enroute on a ten day visit to US, France
Prime Minister Manmohan Singh reached Frankfurt enroute to the US
where he will address the 63rd session of the UN General Assembly and
will also hold talks with US President Bush on several issues
including the civilian nuclear initiative.
Civil nuclear cooperation will be high on the agenda of Prime Minister
Manmohan Singh during his 10-day visit to the United States and
France.
Dr Singh will meet Pakistani President Asif Ali Zardari on the
sidelines of the UN General Assembly meet in New York on Wednesday.
Foreign Secretary Shiv Shanker Menon told reporters that Prime
minister will discuss the entire gamut of India-Pakistan relations
with Zardari.
Following is the statement by the Prime Minister Dr Manmohan Singh on
the occasion of his departure to United States and France:
|
| Show full article (6.14Kb) |
|
| |
no comments
|
|
|
Author: kayveekayvee
Date: Sep 22, 2008 19:12
Hey everyone!
I have this machine that *should* be switching on and off at a
frequency of about 110-120HZ. It is powered by a 24DC power supply and
is controlled by a 12.5W, 100Ohm Rheostat placed in series with the
machine. It usually draws about 0.2A ~ 0.4A (fused at 0.5A).
As of now I have no way of telling what the frequency of the machine
(it is very important that it is accurate), and I plan on buying a
panel mounted frequency counter to rectify this problem... But looking
at the stats of the frequency counters I can afford out there they
don't like being given any more than 10-40mA.
Now the question is how do I hook up this frequency counter to measure
my machine without hooking it in a fashion which would give it the
full brutality of the current?
Once again, any input would be greatly appreciated and thanks again!
|
| |
|
| |
2 Comments |
|
|
Author: HarryHarry
Date: Sep 22, 2008 12:13
I have a 19 volt 3.5 amp laptop power supply that I want to use for
equalizing lead acid batteries (car batteries and 75ah rv batteries).
I know I can't leave it unattended because the voltage will fry the
battery.
If I cut the end off the cord, attach alligator clips, and attach to
battery until it boils will it work?
|
| |
|
2 Comments |
|
|
Author: John FieldsJohn Fields
Date: Sep 22, 2008 06:07
On Mon, 22 Sep 2008 00:34:33 -0700 (PDT), FyberOptic
gmail.com> wrote:
>I'm having a bit of a quandary. Since I'm still somewhat of a
>beginner, I hope somebody more experienced can help me out!
>
>I have three TTL logic chips, with one input on each one all connected
>together to a single input signal. When that main signal wire is
>connected to ground, the logic chip signals are all low as expected.
>When I remove the ground connection though, they seem to all go high
>on their own without being connected anywhere (aside from to each
>other). This isn't my problem exactly, but I'm curious if someone can
>explain it.
---
View in Courier.
One of the gates in a 7400 2-input NAND looks like this, with the inputs
typically being the same for the entire 74XX TTL family.
|
| Show full article (3.63Kb) |
|
no comments
|
|
|
Author:
Date: Sep 22, 2008 05:54
I am trying to use LPT port to control a small 5 V relay (Meisei ps-5). The relay
appears to have 1.75 ohm resistance.
I connected the data pin to the + pin of the relay and ground to the gnd pin. No
click. Voltage drops to about 2V. Then I tried with DC power supply at 4.5V
(1.5A). A nice click is audible from the relay.
(Bear with me: I am a newbie) I conclude that LPT is not suppliying enough
current (live and learn!). After googling for some time I am presented with a new
thing that should: a transistor - as in "transistor radio".
This helpful site has a cirquit that fits the bill:
http://www.epanorama.net/circuits/parallel_output.html#relaycontrol
here is it:
|
| Show full article (1.57Kb) |
|
5 Comments |
|
|
Author: Jon SlaughterJon Slaughter
Date: Sep 22, 2008 05:05
> I'm having a bit of a quandary. Since I'm still somewhat of a
> beginner, I hope somebody more experienced can help me out!
>
> I have three TTL logic chips, with one input on each one all connected
> together to a single input signal. When that main signal wire is
> connected to ground, the logic chip signals are all low as expected.
> When I remove the ground connection though, they seem to all go high
> on their own without being connected anywhere (aside from to each
> other). This isn't my problem exactly, but I'm curious if someone can
> explain it.
>
It's called floating. The state is usually undefined but because of unknown
factors it could set it to either state. That or internally there is a
pullup.
(are you sure it's continuously high and not toggling back and forth very
rappidly?)
> So I need a pull-down on that main input signal to keep the inputs
> it's connected to forced low unless a high is explicitly introduced.
> The main input signal itself will be connected to a pin coming...
|
| Show full article (3.33Kb) |
|
no comments
|
|
|
Author: Jasen BettsJasen Betts
Date: Sep 22, 2008 01:43
On 2008-09-22, FyberOptic gmail.com> wrote:
> Where the actual problem comes in is that when I add a "normal" pull-
> down resistor value between the input signal and the ground, it
> behaves as if it's not connected to ground at all. I've tried a few
> different ones, from 100k, to 50k (didn't have a 47k), down to 4.7k.
> I couldn't figure it out. Then finally I tried a 1k, and it seems to
> properly pull it down low.
10K for a normal TTL pull down, but with three inputs involved you
might need 1/3 of that or 3.3K
also the TTL thresholds are near grouind so you need to pull harder to
go down that you do to go up.
> A possible worry I have though is that the 1k resistor is kind of low
> and could be wasting power (since it will be able to run from
> batteries), but I dunno.
if it's to be battery operated, CMOS might be a better choice than TTL.
--
Bye.
Jasen
|
| |
|
1 Comment |
|
|
Author: abdo22abdo22
Date: Sep 21, 2008 16:03
some one who do eny thing he wont in eny time he wont and didnt
know that ther is some things he must not do it
remamper that allah (gud) see
you
tray to be abior man/woman
my friend who tel us about this bad vidio what are you
wont real
wont us to be ahips think again
|
| |
|
no comments
|
|
|
Author: yumayuma
Date: Sep 21, 2008 10:52
Milenko Kindl
Banja Luka
Banjaluka
Bihac
|
| |
|
no comments
|
|
|
|
|
|
Author: Jon SlaughterJon Slaughter
Date: Sep 21, 2008 07:04
http://www.msnbc.msn.com/id/26803840
So they say the racists will probably decide the election!?!?!
I say the majority will decide it!! How come when it's close it's ok to
seperate out a very small group and blame them but when it's not close then
that group isn't blamed?
You can just as easily blame the conservative's born between 1955 and 1957
that weight between 130 and 150 lbs! (and say they will decide the election)
Why all the racism injected into it?
|
| |
|
7 Comments |
|
|
|
|
|
|
