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RE: Well.... we weren't arrested....
Frank,
Thanks - that's a good idea.
I've only ordered a few LEDs, of different types, to see which I prefer. A
12v supply, and a 180ohm resistor from Craplins it is :-)
M.
-----Original Message-----
From: Frank Mc Alinden [mailto:armagh@xxxxxxx]
Sent: 17 September 2002 13:49
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] Well.... we weren't arrested....
Mark
The Christmas tree light thingy correct , one out all out , Im
doing some garden lites (eventually) and im going to use 12v dc , i will
put 3 in series and use a resistor around 180 ohm ...... Maybe Ian can put
something on his site???????
Frank
----- Original Message -----
From: "Mark Harrison" <Mark.Harrison@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Tuesday, September 17, 2002 10:28 PM
Subject: RE: [ukha_d] Well.... we weren't arrested....
> Frank,
>
> I believe you :-) I was asking to increase my own understanding...
>l
> OK - next question, probably for Keiran... what value of resistor and
power supply should I be using with the ones you sold me yesterday?
>
> M.
>
> -----Original Message-----
> From: Frank Mc Alinden [mailto:armagh@xxxxxxx]
> Sent: 17 September 2002 13:26
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Well.... we weren't arrested....
>
>
> I cant remember the exact theory but one led tends to rob all the
current
> from memory, i think it might have something to do with the voltage
> characterics of each led being slightly different ,but believe me Mark
they
> need a seperate resistor .....
>
> Frank
> ----- Original Message -----
> From: "Mark Harrison" <Mark.Harrison@xxxxxxx>
> To: <ukha_d@xxxxxxx>
> Sent: Tuesday, September 17, 2002 10:21 PM
> Subject: RE: [ukha_d] Well.... we weren't arrested....
>
>
> > Frank,
> >
> > Why?
> >
> > Given that the resistor only serves to dump current, I'd assume
that I
> could have several LEDs in parallel with each other, then a resistor
between
> that array and the -ve rail.
> >
> > Why won't this work?
> >
> > Mark
> >
> > -----Original Message-----
> > From: Frank Mc Alinden [mailto:armagh@xxxxxxx]
> > Sent: 17 September 2002 13:18
> > To: ukha_d@xxxxxxx
> > Subject: Re: [ukha_d] Well.... we weren't arrested....
> >
> >
> > Hi Mark
> > If your wiring in parallel you must use a resistor
for each
> led
> > ... remember the led link here it is
> > again............http://www.poptronics.com/interactive/index.html
> >
> > Frank Mc
> > ----- Original Message -----
> > From: "Mark Harrison" <Mark.Harrison@xxxxxxx>
> > To: <ukha_d@xxxxxxx>
> > Sent: Tuesday, September 17, 2002 10:14 PM
> > Subject: RE: [ukha_d] Well.... we weren't arrested....
> >
> >
> > > Funny you should mention that :-)
> > >
> > > I assume, BTW, that LEDs can be wired in parallel, so you
effectively
> > have:
> > >
> > > -----------------------------
> > >
> > > +ve rail
> > >
> > > LED LED LED LED
> > >
> > > Resistor to dump the current
> > >
> > > -ve rail
> > >
> > > ------------------------------
> > >
> > >
> > > Does this sound right?
> > >
> > > M.
> > >
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: Daniel James [mailto:daniel@xxxxxxx]
> > > Sent: 17 September 2002 13:11
> > > To: ukha_d@xxxxxxx
> > > Subject: RE: [ukha_d] Well.... we weren't arrested....
> > >
> > >
> > > Does this mean Mr Harrison is going to pick up a soldering
iron...
> > >
> > > .....only i'd like some notice first.... :-)
> > >
> > > -----Original Message-----
> > > From: Broadfoot, Kieran J [mailto:Kieran.Broadfoot@xxxxxxx]
> > > Sent: 17 September 2002 13:07
> > > To: 'ukha_d@xxxxxxx'
> > > Subject: RE: [ukha_d] Well.... we weren't arrested....
> > >
> > >
> > >
> > > well it sure wasnt me ;-)
> > >
> > > next time you'll see me ill be standing on a street corner
with a long
> > rain
> > > coat on saying: "here mate, wanna buy some leds"
;-)
> > >
> > > kieran
> > >
> > > -----Original Message-----
> > > From: Daniel James [mailto:daniel@xxxxxxx]
> > > Sent: Tuesday, September 17, 2002 1:05 PM
> > > To: ukha_d@xxxxxxx
> > > Subject: RE: [ukha_d] Well.... we weren't arrested....
> > >
> > >
> > > Were they your finest Caribbean gold ones then? :-)
> > >
> > > BTW who was the smartly dressed one :-P
> > >
> > > D
> > >
> > >
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