DC Elevated Filaments to Relay Power Supply

[stevensloane]

Can I DC elevated filaments to power the relay power supply?

[shooter]

I don't see elevated heaters or relays in the schematic your posted 

there's a good read for relays, make note of power hookup at the very end

http://el34world.com/projects/relay_switch.htm

[stevensloane]

There is no relay in the schematic. I’m using one of Doug’s relays and power supplies. There a DC elevated heater supply in the schematic. Follow the center tap for the heaters. What I am asking is it ok to hook up the heaters on this schematic to Doug’s power supply.

[sluckey]

Should be OK ***IF*** you float Doug's power supply, ie, don't connect the 5V common (ground) to chassis ground. This also means use isolated jacks for footswitches.