Re two batteries, was Miracle switch failures

[WHIP23 at aol.com]

In a message dated 3/31/03 6:54:27 AM Pacific Standard Time, 
tomanekw at saic-abingdon.com writes:

> 
> Just FYI
> 
>   
> 
> I did use a similar two-battery system; the problem is that you have to 
> find a high capacity diode (I used at least 1.5 Amp or higher, which is 
> better).  The voltage drop is 0.7 for silicon diodes, this works well with 
> 5C batteries.  However, using diodes introduces an additional single point 
> of failure but having two independent systems balances this to some degree. 
>  
> 
>  
> 
> 
> 

There is no single failure point in the system as I described it, you would 
have to have a failure in both legs at the same time.  Failure of the diode 
would simply put you back to a single battery system.  The whole idea of this 
scheme is that it is truly redundant from battery to receiver.

Bob
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