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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: another pic posted by frankford on March 5, 2012 at 17:22:57:
It's hard to tell from the pictures.You said "I went back and wired the heaters per schematic, high side to .68 ohms to pin 7 of one tube. I wired from pin 7 to other .68 ohm and left the resister to pin 2 of other 6550."
This is a little confusing. forget about pin 2 and pin 7 being swapped. You can swap them or not.
The bottom line is, one filament of one 6550 should be connected to the filament winding through a .68 ohm resistor. The other filament of the other 6550 should also be connected to the filament winding through a .68 ohm resistor with nothing in series.
pay no attention to the type of tube in the drawing. That's the only tube symbol of a tube that showed the heater connections I could find.
If it doesn't work with one side grounded then you have a shorted (to ground) heater winding.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Edits: 03/05/12
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Follow Ups
- RE: another pic - Tre' 17:39:07 03/05/12 (8)
- RE: another pic - frankford 17:47:07 03/05/12 (7)
- RE: another pic - Tre' 17:48:54 03/05/12 (6)
- quick question Tre' - frankford 18:06:27 03/05/12 (4)
- RE: quick question Tre' - Tre' 18:25:20 03/05/12 (3)
- RE: quick question Tre' - frankford 21:57:12 03/05/12 (2)
- RE: quick question Tre' - frankford 23:05:40 03/05/12 (1)
- RE: quick question Tre' - frankford 08:56:14 03/06/12 (0)
- RE: another pic - frankford 18:02:34 03/05/12 (0)
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