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Philco 40-180 - Resistor Burnout
wtoeller
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Posts: 8
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Joined: Apr 2019
City: Germantown State, Province, Country: Maryland
#12

12-16-2021, 06:13 PM
Rob - you are correct. There are no other 150 ohm resistors in the schematic besides the cathode bias resistor. I currently have 6 of these radios and they all have this 'extra' 150 ohm resistor where I indicated! I can only speculate that it was a mid-stream manufacturing change that did not get into the schematic, or, the schematic I have is an earlier (or later) version then what my radios have.

Someone smarter than me will have to deduce why this design was implemented.
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Messages In This Thread
Philco 40-180 - Resistor Burnout - by wtoeller - 12-15-2021, 06:54 PM
RE: Philco 40-180 - Resistor Burnout - by Mondial - 12-15-2021, 09:43 PM
RE: Philco 40-180 - Resistor Burnout - by Mondial - 12-16-2021, 10:25 AM
RE: Philco 40-180 - Resistor Burnout - by RodB - 12-16-2021, 02:42 PM
RE: Philco 40-180 - Resistor Burnout - by Mondial - 12-16-2021, 06:08 PM
RE: Philco 40-180 - Resistor Burnout - by wtoeller - 12-16-2021, 06:13 PM
RE: Philco 40-180 - Resistor Burnout - by Mondial - 12-16-2021, 06:20 PM



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