6N3 & 6E2 tubes.

[tjolle62]

This with tubes is a totally new thing to me and of course a question appear,
for heating these tubes like 6.3V and if i got this right is DC we talk about !
On high voltage side it says where positive and negative goes on pcb but on
heating doesen't say which is what just 6.3V.
On 6E2 tube are pin 4 and 5 heating is that it doesent matter which polarity
these tubes get or ?

[DF96]

Valve heaters are normally AC, but DC can be used too.

If you want detailed advice you will need to ask a detailed question e.g. tell us what PCB you are using.

[tjolle62]

OK got'it !
So in this case it really doesen't matter whats + or - then ,
i was little curious about a magic eye that i got from e-bay.
I do have a soft start psu with adjustable heat from 4 - 15VDC and
Hi from 110 - 300VDC on this unit.
Found a picture on that magic eye.

[tricomp]

tjolle62,

Here's the schematic diagram for exactly your EM87/6E2 circuit.
For good measure the EM87 data is also attached.

rgds,

/tri-comp

[tjolle62]

Ok ! now i'm in the clear on that point regarding heating on my tubes,
great information for me as a newbie on tube building.
Thank you guy's.

Regards
Kjell.