Philco 46-480 Electronic Restoration
Posts: 251
Threads: 14
Joined: Jan 2024
City: Tulsa
State, Province, Country: Oklahoma
I’ve consulted a couple of the books which I got from Jim Koehler, Elements of Radio Servicing (Marcus and Levy, 1947) and Elements of Radio, Second Edition (Marcus and Horton, 1948). It looks to me that my Philco 46-480 has the AVC bus connected to the screen grid, the output of the preceding IF transformer connecting to the control grid, and the suppressor grid grounded. It seems a close design to this textbook example of a 1st IF section, except that this example only connects the screen grid to a fixed 100V rather than to an AVC bus.
And, just as I discovered and corrected on my own schematic, the control and suppressor grids are no connected together.
Joseph
Philco 46-480
Philco 49-906
Messages In This Thread
RE: Philco 46-480 Electronic Restoration - by jrblasde - 9 hours ago
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