TenTec
[Top] [All Lists]

Re: [TenTec] Centurion Amp - early model, looking for advice

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Centurion Amp - early model, looking for advice
From: Mike Bryce <prosolar@sssnet.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 26 May 2016 21:44:55 -0400
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Watch out where you place your fingers inside that amplifier.

Not only will the voltages inside there kill you, it will hurt while you die

Be careful!

Mike, WB8VGE


Mike Bryce
prosolar@sssnet.com

“The trouble with quotes on the Internet is that you never  know if they are 
genuine”

—Abraham Lincoln







> On May 26, 2016, at 9:13 PM, Mike Schatzberg <cherokeehillfarm@earthlink.net> 
> wrote:
> 
> Ok. Your tubes are not biased. This is not the way they would have built the 
> amp. Depending on your meters accuracy, zero bias might allow 140 mils max. 
> 
> You have no cut off or operating bias. 
> 
> I don't have the road map for that amp, but it apparently uses an electronic 
> bias switching with a transistor switch. Either the switch is bad or the bias 
> source is bad.  I think it takes around 100 volts to cut off the 3-500, and 
> only around 6 to 7 volts to run at 60 to 70 mils for two tubes. 
> 
> This is not very difficult to trouble shoot, but you need a fix not a mod. 
> 
> There are only a few diodes, maybe a zener, and a transistor to replace at 
> most. 
> 
> 73,
> 
> Mike
> W2AJI 
> 

_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
<Prev in Thread] Current Thread [Next in Thread>