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RE: Well.... we weren't arrested....
Frank,
I believe you :-) I was asking to increase my own understanding...
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
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
> >
> >
> > http://www.automatedhome.co.uk
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> >
> >
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