6SQ7 internal diodes

[gary sanders]

Im not too good at reading datasheet graphs,just wondering if anyone knew the specs on the diode in these tubes.I know they were designed for detectors or something in radio but I may have a good use for one in an amp if it would work for me.

Im using the 6SQ7 for a cathodyne PI and Merlin's page has a 1n4007 in one for arc protection.I know I could just put the 4007 in but thats no fun when youre building something from scratch and your favorite question is "what if?"

http://www.valvewizard.co.uk/Cathodyne3.jpg

http://www.valvewizard.co.uk/cathodyne.html

[martin manning]

The diode is supposed to allow current to pass while the cathode is coming up to temperature. The problem I see with your idea is that the vacuum diode won't be up to temperature either, and so it won't be capable of performing this function.

[gary sanders]

thanks!