[Amps] SB 200 blown diodes in power supply

[Carl]

It was more tongue in cheek than anything else Glen. The forum seems to have 
decided anamolies at times such as 12+ hour delays in posting and then its 
en masse.

It may be the server gets bogged down during contesting times.

Carl
KM1H


----- Original Message ----- 
From: "Glen Zook" <gzook at yahoo.com>
To: <amps at contesting.com>; "Kathy Bookmiller" <wb2aio at yahoo.com>; "Carl" 
<km1h at jeremy.mv.com>
Sent: Friday, March 25, 2011 10:20 PM
Subject: Re: [Amps] SB 200 blown diodes in power supply


Actually, somehow my post got duplicated and sent again by the reflector.  I 
originally replied yesterday and got an E-Mail back from Kathy shortly 
thereafter.  Therefore, I definitely was not a day late!  Now what is 
happening to the reflector I have no idea.  However, sometimes I am getting 
duplicate messages from the reflector 1 to 2 days after the original message 
was sent.

Kathy can verify this.

If you look at the time stamp on the message that you quoted you will see 
that the message was sent yesterday.  Now this time stamp is Eastern since 
you are in the Eastern Time Zone.  My time stamp shows 3:13 PM Central time.

Glen, K9STH

Website:  http://k9sth.com


--- On Fri, 3/25/11, Carl <km1h at jeremy.mv.com> wrote:

Good old Glen, a day late again!

----- Original Message ----- From: "Glen Zook" <gzook at yahoo.com>
To: <amps at contesting.com>;
"Kathy Bookmiller" <wb2aio at yahoo.com>
Sent: Thursday, March 24, 2011 4:13 PM

Subject: Re: [Amps] SB 200 blown diodes in power supply

Replace the diodes with 1N5408 which are cheap from Mouser and have a much 
better safety level than the original diodes. Mouser does not have a minimum 
order.

http://www.mouser.com

You will have to increase the size of the holes in the existing circuit 
board to accommodate the larger diameter leads of the 1N5408.

However, you need to determine why the diodes "went". Probably due to 
failing electrolytic capacitors. You can get suitable capacitors from Mouser 
at reasonable costs.