[_] (OT) Basic electronics
Mike Karthauser
mikek at brightstorm.co.uk
Fri Aug 11 13:22:50 BST 2006
hi olly
On 11 Aug 2006, at 13:08, Oliver Humpage wrote:
> It's been suggested that I need to put a resistor in series with it, to
> limit the power flow to 25W? If that's right, how big a resistor do I
> need?
> Or did I just get a duff bulb?
you want to step down your voltage to 12V and then run your bulb off
that.
(think of the equivalent lamp you'd buy in ikea with a massive white
power supply slab attached to it)
HTH
mikek
--
Mike Karthauser
Managing Director - Brightstorm Ltd
Email >> mikek at brightstorm.co.uk
Web >> http://www.brightstorm.co.uk
Tel >> 0117 9426653 (office)
07939 252144 (mobile)
Snailmail >> Unit 8, 14 King Square,
Bristol BS2 8JJ
On 11 Aug 2006, at 13:08, Oliver Humpage wrote:
> It's been suggested that I need to put a resistor in series with it, to
> limit the power flow to 25W? If that's right, how big a resistor do I
> need?
> Or did I just get a duff bulb?
you want to step down your voltage to 12V and then run your bulb off
that.
(think of the equivalent lamp you'd buy in ikea with a massive white
power supply slab attached to it)
HTH
mikek
--
Mike Karthauser
Managing Director - Brightstorm Ltd
Email >> mikek at brightstorm.co.uk
Web >> http://www.brightstorm.co.uk
Tel >> 0117 9426653 (office)
07939 252144 (mobile)
Snailmail >> Unit 8, 14 King Square,
Bristol BS2 8JJ