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Posted by Tomi Engdahl (194.29.197.22) on December 15, 2003 at 02:08:55:
In Reply to: ohm/watt/voltage ralations posted by mike from italy on December 14, 2003 at 18:26:26:
: hello friends
: i have an 200w heating element soldering iron.
: knowing is ohm mesuring it with a tester how could i understand its voltage?
: coud someone explain me relations between ohms,watts and volts?
: any help will be appreciate
: mike from italy.
Here are two equations that are useful:
Watts = voltage * current
current = voltage / ohms
If we combine those, we get the equation
watts = voltage * voltage / ohms
and this can be modified to
voltage = sqrt (watts * ohms)
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