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Philco 60, open oscillator coil
Ron Ramirez
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Posts: 13,776
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Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana
#4

02-07-2013, 08:23 PM
The 3.5 ohm section is actually the primary. Typically bad, it is wound over the secondary with a thin insulator made of a nitrocellulose material. This stuff breaks down over the decades, causing the wire to corrode (turn green) and fail. In its worst cases it also attacks the secondary, rendering the entire coil bad.
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Ron Ramirez
Ferdinand IN
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Philco 60, open oscillator coil - by rck46 - 02-07-2013, 04:03 PM
RE: Philco 60, open oscillator coil - by Ron Ramirez - 02-07-2013, 08:23 PM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration