Re: Understanding a split-mode power supply.

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#1619

From: Sylvia Else
Date: Tue, 06 Jan 2009 02:33

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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. There's not much point in having a fuisible there if it 
remains conductive through insulation break down after it has fused.

Sylvia.

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Date: Tue, 06 Jan 2009 13:33:46 +1100
From: Sylvia Else <sylvia@not.at.this.address>
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Subject: Re: Understanding a split-mode power supply.
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