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About 300B SE heater w/t Coleman regulator

Hi guys:

Just started building a 300B SE, the original design connect +5VDC to one filament, and the other to ground.

I want to implement a Coleman regulator, apparently I can't connect one filament to GND, which shorts the CCS part of the regulator.

Can I just connect F+/F- to both sides of filament without grounding? or any filament resistor needed?

Cheers
 

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