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

Posted by Dave Froehlich on 01/14/2010 17:01

Warren,
The L-49B calls for a number 46 lamp. Are you sure that a 40 ohm resistor will work? I have a 50 ohm resistor. I just want to use this to test the radio to see if it works. I plan on buying a replacement L-49B. So if a 50 ohm 10 watt resistor will work, I'll try that.

Thanks,

Dave
:3 & 8 = 150 8 & 7 = 40 You could use an 8.2 MFD.at 160 VAC from pins 3 to 7 .. This capacitor will fit inside the original ballast tube. For the dial lamp. Use a #44, lift the heater ground from the last tube in the string, add now the lamp in series from the heater to ground. Shunt the lamp with a 47 ohm 1 watt resistor. This works perfect.
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:IPAddress: ***.24.247.210

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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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