| To: | tentec@contesting.com |
|---|---|
| Subject: | Re: [TenTec] Orion II A9 Board Failure...Again! |
| From: | "Dr. Gerald N. Johnson" <geraldj@storm.weather.net> |
| Reply-to: | geraldj@storm.weather.net, Discussion of Ten-Tec Equipment <tentec@contesting.com> |
| Date: | Wed, 25 Jun 2008 16:44:33 -0600 |
| List-post: | <mailto:tentec@contesting.com> |
On Wed, 2008-06-25 at 09:55 -0700, pfizenmayer wrote: > Dunno how the link disappeared - it was on my "sent" . > > http://www.users.qwest.net/~pfizenmayer/ > > Subject: Re: [TenTec] Orion II A9 Board Failure...Again! > > > > Here is a link to a pretty complete SPICE analysis of the A9 board - its > > the > > bottom line in the table. The issue is RIPPLE current. > > > > Hank K7HP > > > Work that Tentec apparently has failed to do. Looks like there are capacitors capable of giving long life in the circuit based on the computed and rated ripple current, and many that won't give a long life. 73, Jerry, K0CQ |
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