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hey guys, i have a horn with 12v/510Hz
i want to use it using my 48v/14A battery.
i cant think of a way to get the resistor as a power devider from 48v to 12v for this horn.
any ideas how i calculate that? (i dont know the resistance of the horn)
Specs found on the Internet show that it is an electromagnetic automotive horn that uses 6 Amps at 12V. You're looking at one HOT 216 Watt, 6 ohm resistor there fella. Power source is 48 V, Horn is 12 V, resistor voltage is 48-12=36 volts. 36 volts/6 amps = 6 ohms. Power= 6 amps * 6 amps * 6 ohms = 216 watts.
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