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My all-time favourite Dilbert cartoon, this is: BTW, a Dumpster is a brand of skip, I think. -
Diddley di de doh...Comment
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<Wilmslow mode>
I've just measured the resistance of these 5W halogen bulbs... cold, it's about 2.5 ohms...
So 12V / 2.5 ohms = 4.8A.
25 x 4.8A = 120A...
Oooooops...
</Wilmslow mode>
That's going to need one hefty PSU...Comment
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Or maybe a car battery...
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What voltage are they?Originally posted by zeitghost View Post
Even at 12 volts thats a big PSU. At 240V it's just plain scary
"Being nice costs nothing and sometimes gets you extra bacon" - Pondlife.Comment
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12V.Originally posted by DaveB View PostWhat voltage are they?
Even at 12 volts thats a big PSU. At 240V it's just plain scary
It's the surge from cold that's the scary thing.
I've got 25 12V torchbulbs running off a meaty 2A psu & it sweats a bit when they all switch on together...
The original design used leds and ran happily off a 1A supply... but an ordering mistake with the LEDs scuppered that idea.
Ho hum.
It ain't my money
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Could be your workshop that goes up in smoke thoughOriginally posted by zeitghost View Post12V.
It's the surge from cold that's the scary thing.
I've got 25 12V torchbulbs running off a meaty 2A psu & it sweats a bit when they all switch on together...
The original design used leds and ran happily off a 1A supply... but an ordering mistake with the LEDs scuppered that idea.
Ho hum.
It ain't my money
Maybe you could code in a swanky startup sequence to make it look good and keep the inial load down."Being nice costs nothing and sometimes gets you extra bacon" - Pondlife.Comment
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When you switch on from cold, all the lights are on...
This is the Lamp Test...
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It won't be living up here much longer...Originally posted by DaveB View PostCould be your workshop that goes up in smoke though
Maybe you could code in a swinky startup sequence to make it look good and keep the inial load down.
Now to source a 20A PSU... the 10A one was £40... I don't think my illustrious client realises quite what he's got himself into...
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The '00 still not gone?My all-time favourite Dilbert cartoon, this is: BTW, a Dumpster is a brand of skip, I think.Comment
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