Damn Wayne... you DO think of everything!
73,
Tom
At 11:09 11/06/2007, wayne burdick wrote:
Tom Hammond wrote:
WB:
We're discussing it here right now... what would the 'damages' be
if a supply (ANY supply) could/would fail placing 24VDC at up to
30A on the K3's DC line?
I'm thinking about designing an external plug-in OVP kit. Unless
YOU want to do it.
The K3 already has OVP built-in, in the form of high-current,
high-power zener clamp that kicks in at around 16 V. It can handle
hundreds of amps for long enough to blow the self-resetting polyfuse
(F2 on the RF board schematic). An identical device is used on the
KPA3, which has its own circuit breaker. So the OVP is very rugged
and reliable.
In addition, as a backup, the K3 will turn itself off if it senses
an over-voltage condition.
73,
Wayne
N6KR
---
http://www.elecraft.com
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