RE: LED rules of thumb

["Bricknell, Tony" <tony.bricknell@xxxxxxx>]

For simple lighting transformers to convert watts into amps, transpose:

Power = Volts x Amps

Therefore Amps = Power / Volts = 60 / 12 = 5 Amps (5000mA) - more than
sufficient for your requirements.  In fact, with that transformer you
could
light up your next door neighbours garden as well.  And their
neighbour.
And their neighbour... :o)

HTH
Tony

-----Original Message-----
From: Stu Worrall [mailto:stuart@xxxxxxx]
Sent: 17 September, 2002 16:10
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] LED rules of thumb


Cool!  And thanks for the diagram.  It really helps to visuallise
these
things when im a complete novice to electronics :-)

In terms of the current required Ive been looking at the unit that Ian
recommended to Kieran which is on screwfix. 

http://www.screwfix.com/app/sfd/cat/pro.jsp;jsessionid=O4ONBAKXEIPG3CJO2
C4CIIQ?ts=71138&id=14990

Only probs for me is that it specifies 12V and 60 Watts.  Is there
a
calc to work out what this would provide in milli amps??  Any ideas
on
the spec that you've already looked at Ian?

Thanks

Stu

<snip>

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