[sdiy] SSM2164 last time buys

Stewart Pye stewpye at optusnet.com.au
Wed Mar 2 11:07:37 CET 2011


It depends if the voltage drop across the resistor is a problem I guess...

Stewart.


Neil Johnson wrote:
> Hi Stewart,
>
>   
>> If the problem only occurs when the negative rail is missing then why not
>> have a PNP transistor (or P channel Mosfet) to switch the V+ off when V-
>> disappears.
>>     
>
> Yes, I sketched that up yesterday and it should work.  But compared to
> a single resistor in the V+ line it is possibly a bit over-the-top?
>
> Neil
>   




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