Quote:
Originally Posted by MrBungle
Quote:
Originally Posted by Herald1360
Surely 20 * 0.6W is 12W? Why did they fall off at 9W? Bunching effect (like cores in a cable)?
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Sorry should have been more clear above. They were 0.25W not 0.6W. This is where I fudged the maths by calculating for 0.6W as I normally buy them. Ran them at 3/4 power (9W) instead of about 4W. |
That has a familiar feel to it. I still refer to MRS25 and the like MF resistors as quarter watt types. They're about the same size as the TR4 MOF ones I cut my professional teeth on. ISTR something about their commercial rating being 0.6W and industrial rating being about 0.25W. Modern 0.25W MF jobs are fiddly little things like old style eighth watt CF or CC types.