[TenTec] Astron Power Supplies To: "'Discussion of Ten-Tec Equipment'"

Art k6xt at arrl.net
Mon Dec 4 22:36:11 EST 2006


Larry
I use a 35A Astron switcher. Nary a problem. I don't ground the negative 
PS. The chassis is, of course, strapped to ground.

I haven't looked into whether there is any reason, inside the Orion, 
that the negative could not be grounded. I'd sure ask TenTec before I 
did it or, ground the negative thru a 1K resistor and current meter as a 
test, to avoid rude shocks.

73 Art

Message: 2 Date: Mon, 4 Dec 2006 17:08:59 -0600 From: "Larry Menzel" 
<retire at means.net> Subject: [TenTec] Astron Power Supplies To: 
"'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>, 
<orion565 at yahoogroups.com> Message-ID: 
<200612042306.kB4N6ukZ000566 at smtp2.onvoy.com> Content-Type: text/plain; 
charset="windows-1250" Hey, guys, I?ve been using a 35amp Astron 
supplies in my shack. I have been running my Orion off it since I got 
them, and with no problems. It crapped out the other day, and I believe 
I read or heard someone say that the negative post should be grounded to 
the case of the supply. The one I have been using does NOT. Well I just 
got a replacement supply, and I opened the case, and I can see that 
indeed, the negative post is isolated with insulators on both sides of 
the negative post. Do I recall Paul Clinton telling me that the post 
should be connected to the case? Number one, if so, why doesn?t Astron 
do that to begin with? And second question, will it do any harm to do 
so? Your opinions would be much appreciated before I put this one into 
service. TIA. Larry, N0XB Northfield, MN
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