[Elecraft] K3: reverse 12 volt supply

[Don Wilhelm]

The base K3 is protected by an in-line diode that will not allow reverse 
voltage to flow.
The same is not true of the KPA3 where the reduction in voltage would 
not be tolerable.
The KPA3 is protected by a circuit breaker, but in this case did not 
trip in time to prevent damage.

73,
Don W3FPR

On 9/13/2015 10:55 PM, James F. Boehner MD via Elecraft wrote:
> Whew!
>
> Not a good feeling-but it can happen to any of us, regardless of how careful
> we are.
>
> Elecraft has been very good on suggesting helpful modifications to the
> radio.  Any thoughts? Perhaps an in-line diode?
>
> I'm not sure if that would result in a significant voltage drop-just a
> thought.
>
>