xia@lemmy.ca to Showerthoughts@lemmy.worldEnglish · 17 days agoIf you reverse the polarity of a fire-alarm, you get a fire-starter.message-squaremessage-square11linkfedilinkarrow-up180arrow-down15
arrow-up175arrow-down1message-squareIf you reverse the polarity of a fire-alarm, you get a fire-starter.xia@lemmy.ca to Showerthoughts@lemmy.worldEnglish · 17 days agomessage-square11linkfedilink
minus-squareTranquilTurbulence@lemmy.ziplinkfedilinkEnglisharrow-up2·17 days agoSomething as simple as an incandescent light bulb works either way. LED lights are picky about electricity.
minus-squarecall_me_xale@lemmy.ziplinkfedilinkarrow-up4·17 days agoIndividual LEDs, yes; the rectifiers in most LED “bulbs” shouldn’t care.
Something as simple as an incandescent light bulb works either way. LED lights are picky about electricity.
Individual LEDs, yes; the rectifiers in most LED “bulbs” shouldn’t care.