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Antique Radio Technical Forum
Testing Vacuum Tubes - What level of

Posted by Thomas Dermody on 11/27/2005 14:41

They can be found at www.tubesandmore.com. Replace with exact same values +/- 15%. A .01 MFD condenser may be replaced with a .015 MFD condenser. A .05 MFD condenser may be replaced with a .047 MFD condenser. Use same or higher working voltages. If originally 400 WVDC, then any condenser rated at this voltage or higher may be used. A condenser is a capacitor. Condenser is the older word which I use for some odd reason. It's all the same stuff that they use in modern radios, though.

You may find a limited variety of condensers at Radio Shack. They have .01 MFD, .0047 MFD, and .001 MFD condensers rated for 500 volts. In an emergency these may be used. If you need .05 MFD, just wire five .01 MFD condensers in parallel. These are ceramic condensers of modern design, which are extremely reliable. All of the other condensers which they sell are usually rated under 100 WVDC. You can't use these in your set.

www.tubesandmore.com is an excellent source for many things that you'll need for your set. I recommend ordering their catologue, as it's a bit easier to read than their web site, though you'll find the most up-to-date information on their web site.

Thomas



Testing Vacuum Tubes - What level of "GOOD" is good enough.  
Bill 11/22/2005 14:54 
Doug Criner 11/22/2005 15:14 
Bill VA 11/22/2005 22:41 
Thomas Dermody 11/23/2005 18:34 
easyrider8 11/24/2005 02:33 
Thomas Dermody 11/24/2005 14:47 
Billy Richardson 11/24/2005 13:03 
Thomas Dermody 11/24/2005 15:04 
Bill 11/26/2005 22:01 
Thomas Dermody 11/26/2005 22:28 
Bill 11/27/2005 09:52 
Thomas Dermody 11/27/2005 14:41 
Billy Richardson 11/28/2005 16:31 
Doug Criner 11/27/2005 14:43 
Thomas Dermody 11/27/2005 14:48 
Bill 11/27/2005 16:35 
Thomas Dermody 11/28/2005 00:23 
Thomas Dermody 11/28/2005 12:25 
Donnie Land 11/30/2005 21:58 
Thomas Dermody 11/30/2005 22:48 
Thomas Dermody 11/30/2005 22:50 
Donnie Land 11/30/2005 23:38 
Norm Leal 11/30/2005 23:47 
Donnie 11/30/2005 23:59 

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