Somewhere I ran across a article on how to cut the line voltage down for these old radios that were designed for 110 volts, not the 120 volts we have today. Can anybody tell me how to do that, some of these old radios now put out too much B+ voltage to tubes not designed for the jolt.

Ross,

You might want to construct a buck circuit. It is basically a stepdown transformer in which you connect the secondary in series with the primary. The secondary is hooked up in phase opposing. An example would be a transformer with 120/10 volts. With the boost circuit constructed, the output would be approximately 110 volts AC. For more info, check out:

http://www.allaboutcircuits.com/vol_2/chpt_9/5.html

The info on this is about two thirds the way down the page.

Radiodoc
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:Somewhere I ran across a article on how to cut the line voltage down for these old radios that were designed for 110 volts, not the 120 volts we have today. Can anybody tell me how to do that, some of these old radios now put out too much B+ voltage to tubes not designed for the jolt.