DU4 (DU4)

Hello All,

I notice that the photos for this tube are misplaced.  The DU4 is a rectifier made by Mullard and I believe is the equivalent of the Philips 506.  The photos show a De Forest tube, probably a triode.

Regards,

Stuart

To thank the Author because you find the post helpful or well done.

Dear Stuart
How right you are! Thank you. DeForest made a couple of DV tubes and I can imagine that the V was read as an U. I moved the pictures to the DV4. I hope the DV4 is really a triode. I could not find any evidence about the DV4.

Now we miss a photo for the DU4 ... which is supposed to be a 505 (not 506).

To thank the Author because you find the post helpful or well done.