Re: Kolster-Brandes MR10
Be wary about that power calculation. The current through and hence voltage across the resistor will have a very peaky waveform which may have an rms value rather higher than a typical meter will indicate.
That's why it's recommended to fit a resistor of around twice the wattage rating than a simple sum suggests.
If you have a floating 'scope (battery operated for example) you can look (carefully!) at the waveform and see.
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