Different top plate & wood base for 2A3 parafeed

[Chul]

Well, I thought this might give a little fun to see for other DIYers.
My local DIYers like this. 😀

Top plate with hinges and damper. Damn convenient to temper with.
You don't have to pick it up and put it upside down and open the bottom plate...

It's D3a trioded to parafeed bifilar interstage, then to 2A3 resistor loaded parafeed SE.
B+ is 48V Cisco SMPS in series I did after Greenvalves.

 

[NickKUK]

Love it! Only observation is there's a heater wire a little close to one of the tubes - it could melt the insulation?

 

[Chul]

Yes, the wires were a little short and I pushed my luck. 🙂
They are 6AL5 diodes for cathode bias of 2V@20mA. It can be replaced by a small 100-ohm resistor but I like the sound of 6AL5. Maybe I need to do something about the heat.

 

[mctavish]

Those look like they are 6AL5 diodes... They dont get hot...

 

[Bigun]

I don’t think I’ve seen a project like this before, very unique and interesting!

 

[astouffer]

Looks good. I love the little air strut to keep it open.

 

[Windcrest77]

Cool. Are those a bunch of switching power supplies in series?

 

[Chul]

Yes, 48V 0.38A power for Cisco phone system.
I was a little concerned about the switching noise but I can't hear any with my 94dB sensitive speaker.