The PHILCO Phorum
Filament Resistor replacement - Printable Version

+- The PHILCO Phorum (https://philcoradio.com/phorum)
+-- Forum: Philco Radio Discussions (https://philcoradio.com/phorum/forumdisplay.php?fid=5)
+--- Forum: Philco Electronic Restoration (https://philcoradio.com/phorum/forumdisplay.php?fid=8)
+--- Thread: Filament Resistor replacement (/showthread.php?tid=19271)



Filament Resistor replacement - elfiself - 11-23-2018

Half of a 33-3408-3 filament resistor is bad and I'm looking to replace the whole component. It is a 40/80 ohm. what wattage value would be appropriate?
TIA
elfiself


RE: Filament Resistor replacement - Radioroslyn - 11-23-2018

Actual dissipation is abt 3W BUT if you don't want a flaming hot resistor go w/abt X3= 7-10W.


RE: Filament Resistor replacement - morzh - 11-23-2018

For power resistors I triple the ating, so for 3W it is 10W for me.


RE: Filament Resistor replacement - elfiself - 11-23-2018

Thanks Terry. The math works out to 2.4W X3 Looks like 10W should cover it.
Larry