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Antique Radio Technical Forum
L-49B Ballast tube. What are the resistor values inside?

Posted by Warren on 03/17/2010 15:32

Here is a link showing the AC capacitor trick. For your dial lamp, lift the heater ground on the last tube in the series. Add your dial lamp now in series to ground, shunt the lamp with a 47 ohm 1 watt resistor.

http://www.oldradiosrus.com/build.html

Runs cool, slow start, tubes like it and last longer.

IPAddress: ***.81.29.49


L-49B Ballast tube. What are the resistor values inside? 
Dave Froehlich 01/13/2010 20:42 
Warren 01/13/2010 23:32 
Dave Froehlich 01/14/2010 17:01 
Warren 01/14/2010 19:05 
Warren (P/S) 01/14/2010 20:39 
Dave Froehlich 01/15/2010 16:31 
Warren 01/15/2010 17:04 
Dave Froehlich 03/17/2010 15:00 
Warren 03/17/2010 15:32 
Dave Froehlich 03/17/2010 15:49 
Dave Froehlich 03/17/2010 15:50 
Dave Froehlich 04/27/2010 15:15 
Warren 04/27/2010 16:00 
Dave Froehlich 04/27/2010 16:12 
Dave Froehlich 04/27/2010 17:03 
Warren ( That's cool then ) 04/27/2010 19:46 
Warren 04/27/2010 17:18 
Dave Froehlich 04/27/2010 15:21 
Chuck 02/09/2010 02:04 

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