BE CAREFUL

[Robert McGwier]

Be careful around T2, Z1, Z2, etc.  I blew the finals by dropping 12V on the base of the power transistors.  They were gone in a flash even though the bench power supply current limited to 600 ma.
DRAT!
Bob N4HY
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft    Help:  http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[wayne burdick]

Bob,

We put in programmable current limiting and full protection from
reversed supply polarity, reversed internal battery, and shorts from
the 12 V line to ground. The K2 is really hard to damage. Only a truly
motivated and innovative tinkerer could find a way to fry the finals  
;)

Wayne


On Jul 1, 2004, at 8:39 AM, [hidden email] wrote:

> Be careful around T2, Z1, Z2, etc....


---

http://www.elecraft.com

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft    Help:  http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Robert McGwier]

I tried really hard and managed it!  Everything else seems to be fine but
I would like the stand off for the heat sinks to "look better" so I got
the PA kit.   The small troubles I have been having, and they really are
small, are in the category of irritations and not the end of the world.
I figure they will be good "war stories" for later!

Bob


-----Original Message-----
From: wayne burdick [mailto:[hidden email]]
Sent: Thursday, July 01, 2004 4:06 PM
To: [hidden email]
Cc: [hidden email]
Subject: Re: BE CAREFUL


Bob,

We put in programmable current limiting and full protection from
reversed supply polarity, reversed internal battery, and shorts from
the 12 V line to ground. The K2 is really hard to damage. Only a truly
motivated and innovative tinkerer could find a way to fry the finals  
;)

Wayne


On Jul 1, 2004, at 8:39 AM, [hidden email] wrote:

> Be careful around T2, Z1, Z2, etc....


---

http://www.elecraft.com



_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft    Help:  http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com