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Philco 49-901 restoration
Bob Andersen
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Posts: 797
Threads: 42
Joined: Dec 2008
City: Chicago, IL
#11

04-13-2018, 10:14 AM
Probably right after the AC switch. I'll add a fuse there too. It doesn't really matter though as long as it's somewhere in the series filament string

It's there to reduce surge current on startup and pretty much stays a constant temperature while the radio is on. You couldn't use it control a fan. I'll use an Ametherm SL12-22101 or equivalent. It's about 220 ohms at room temperature and drops to around 8 ohms with half an amp running through it.
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Messages In This Thread
Philco 49-901 restoration - by Bob Andersen - 02-27-2018, 12:01 AM
RE: Philco 49-901 restoration - by Bob Andersen - 02-27-2018, 12:53 AM
RE: Philco 49-901 restoration - by Ron Ramirez - 02-27-2018, 06:54 AM
RE: Philco 49-901 restoration - by Bob Andersen - 02-27-2018, 11:00 AM
RE: Philco 49-901 restoration - by Bob Andersen - 03-13-2018, 03:03 PM
RE: Philco 49-901 restoration - by Bob Andersen - 03-16-2018, 06:06 PM
RE: Philco 49-901 restoration - by Arran - 03-17-2018, 04:27 AM
RE: Philco 49-901 restoration - by Bob Andersen - 04-06-2018, 05:42 PM
RE: Philco 49-901 restoration - by Bob Andersen - 04-13-2018, 10:14 AM



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