A reader asks:
Will a 12 volt automotive incandescent dash light bulb give off as much light if it's powered with 12 v ac (60 hz) as opposed to 12 v dc?
...and if there's a difference, how much?
A reader asks:
Will a 12 volt automotive incandescent dash light bulb give off as much light if it's powered with 12 v ac (60 hz) as opposed to 12 v dc?
...and if there's a difference, how much?
hint:
rms
It'll burn with the same brightness. The difference is that since the electrons in AC don't actually go anywhere , and only move back and forth , and thus are not used up , AC is 100% efficient .
I won't question your Creator's wisdom , but you are responsible for your own actions .
Russ, W5RB
this seems to conflict with rms or is that just in a resistor producing heat?Originally Posted by W5RB
shouldn't the dc produce more heat/light?
Last edited by kc7jty; 10-13-2011 at 02:08 AM.
I use DC to power the filaments in several radios, I don't think the tubes even noticed.
Q2)
Would the same bulb produce equal light on the 12 v ac voltage as opposed to rectified 12 v?
Last edited by kc7jty; 10-13-2011 at 04:04 AM.
Nice avatar George.
The neocons seem to be getting genuinely agitated with this demonstration stuff. Let's hope it spreads.
This is how real change will be affected. Not that voting shell game crap.
They may be our last hope.
No. While staying at a Howard Johnsons, I saw a documentary where a princess said Obi Wan Kenobi was the last hope.
A clear conscience is usually a sign of a bad memory
RIP ALBI-W3MIV RIP RUSS-W5RB RIP BOB-VK3ZL
But instead, a short Italian in a red jumpsuit came and saved here.
The louder the monkey, the smaller its balls.
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