[Elecraft] Question: Over-voltage protection (OVP) for K2, K1

[Alan D. Wilcox]

Dave,
If I were to do an OVP for a K2/100 ...
1. Different connectors,
2. A circuit breaker (a 20+ A supply would cause serious damage without  
a fuse or breaker),
3. Change OVP-12 to the OVP-24 (20A continuous, 30A intermittent),
4. Bigger case, probably metal to act as heat sink (just in case).

I would expect a 20-30A supply to have protection, so the above wouldn't 
be necessary. HOWEVER, the supply that inspired the project to start 
with was just such a supply, so maybe such an OVP would be a good idea. 
Hmmm.

Alan
	Alan D. Wilcox, W3DVX
570-321-1516
alan at wilcoxengineering.com <mailto:alan at wilcoxengineering.com>
http://WilcoxEngineering.com
http://www.eham.net/reviews/detail/6768 ... for Client Comments
Williamsport, PA 17701

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David Lankshear wrote:
> That's fine for a barefoot K2, Alan, but what about the K2/100?
>
> Re Matt's comment - surely you don't need current sense resistors for an over VOLTAGE trip?  Generally, the minimum component count for a brute force crowbar is 4.  SCR, zener, resistor, capacitor.
>
> 73  DaveL  G3TJP
>
>