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Article #1620Re: Understanding a split-mode power supply.
From: Phil Allison
Date: Tue, 06 Jan 2009 02:40
Date: Tue, 06 Jan 2009 02:40
35 lines
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1917 bytes
"Sylvia Else" > Phil Allison wrote: >> "Sylvia Else" >> >> >>> As for whether I could substitute a 6.8, maybe I could, though I'd have >>> trouble getting one that has a 350 volt rating. >> >> >> ** Huh ?????????? >> >> No need for that whatsoever. >> >> In operation, the resistor is not subjected to more than a few volts. > > As I commented earlier, if the switching transistor fails by shorting out, > then the resistor will blow. After it's blown it'll have 340V across it. ** Irrelevant. Once it has fused, the resistor will be OPEN circuit. The voltage across the break can be thousands of volts. The issue is a total furphy. ...... Phil ......
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