Tag archives: tubes

Saturday, 20th June 2015 - 15:36:16

Philips DLS10 Delay Tube 01

I was given this interesting tube. The Philips DLS10. It's a thermal delay tube designed to delay the switch on of the HT (High Tension) section so that tubes are at temperature before HT is applied. This one is operational.

Monday, 8th June 2015 - 22:46:59


Cleaned off the last of the cloth insulation on the secondaries. I also scraped back the enamel and tinned all the leads. I am poking 6.3V AC down the high current secondaries on this Ferguson PF181 transformer that I am working on to try and determine where the HT and Primaries are. This is going to be a great transformer to use once I've made it safe. 5V @2A, 12.6V centre tapped @2A. 6.3V @2A. 770V centre tapped HT (385V).

Thursday, 9th April 2015 - 13:59:25


Yup. Thanks again Australia Post. These are United Electric UE-468 triodes.

Friday, 3rd April 2015 - 17:55:47


I started pulling apart this Ferguson PF181 transformer in preparation for use. It has old material based sheathing on the flyleads which I plan to replace with spagetti (PVC though). Unfortunately I didn't finish this off. I will have to continue later. It also looks like some kind of bug has made a house at some point in there.

Wednesday, 1st April 2015 - 18:53:41

RCA 813 Beam Pentode

I fired up the filaments on the two 813 Beam Pentodes that I scored. They both work. One 813 is RCA, the other is Radiotron. I'm going to have to track down a microwave transformer to feed the plate on this thing. It wants ~2kV. Will have to rethink a project now, because the 304T is dead. I'm pretty sure people have built amps with 813s.

Tuesday, 31st March 2015 - 10:51:57

Eimac 304T - I may Cry

Well that sucks =( I can't see myself getting hold of another one of them in Aus any time soon...

The tube was actually packed very very well, so I'm not sure what went wrong. Thanks Australia Post.