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wattage Answered

I was out buying the parts for the free electricity from telephone port in wall, but the resistors have no wattage posted. The man at the electronics store said he needs the wattage for the correct resistors.

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NachoMahma
NachoMahma

13 years ago

. I can't remember what the current specs are for POTS/PTSN, but the voltage is around 48V. Be aware that the voltage can exceed 90V when ringing.

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guyfrom7up
guyfrom7up

13 years ago

measure the voltage of the electricity, and measure the current.take the voltage, divide by current, and write that number down.assuming you'redriving LEDs since you want a resistor, type it into an led calculattor. subtract the restistance you wrote down by what the calculator give you. It will also give you wattage. I would suggest going a bit hight than the calculator says.