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Old 8th February 2009, 02:22 PM   #21
Brit01 is offline Brit01  United Kingdom
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Thanks Eli.

Was this what you had in mind?
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Old 8th February 2009, 02:36 PM   #22
Brit01 is offline Brit01  United Kingdom
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Thanks Eli.

Was this what you had in mind?
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Old 14th February 2009, 11:33 AM   #23
Brit01 is offline Brit01  United Kingdom
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Quote:
(available from Ebay seller Audiotek *** - a wellknown scammer)
Well I received my first Audiotek package finally. Got 3 more packages being shipped.
Packed in a little plastic storage case (various Wima caps). Everything fine but the smaller wima's, 0.47uJ100 do not have Wima written on them. Still the same colour but not sure if they are fakes.





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Modified circuit with the CCS LM317. Really not sure if its incorporated correctly for a CF.
Have a designed this correctly?
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Old 14th February 2009, 01:18 PM   #24
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Quote:
Originally posted by Brit01
Thanks Eli.

Was this what you had in mind?

Yes, it is. However, I have not changed my mind about 10M45S vs. LM317.
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Old 5th April 2009, 12:51 AM   #25
Brit01 is offline Brit01  United Kingdom
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Maybe a dumb question.

I am building a simple CF (point to point) with Bas's psu to supply the B+ to 2 x 6N1P's.

I'm unsure of the connection of the B+ to the plate pin 1.

Do I need a cap running to ground before pin 1 or can it be a direct connection from the B+ out of Bas's psu to pin 1?
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Old 5th April 2009, 04:30 PM   #26
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By "Bas' psu" I assume you mean the power supply that was in the Aikido PCB group buy? Then no, you don't need another filter cap, there is already one at the output (after the resistor).
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Old 5th April 2009, 05:01 PM   #27
athos56 is offline athos56  United States
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I'm a little late in chimeing in, but, I used a choke with a DCR = to my cathode resistor's value (1k in my case) and enjoyed the outcome. As in, I repaced the Rk with the choke. I got the idea from the Glassware/Tubecad site, great resource.

Athos
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Old 5th April 2009, 05:26 PM   #28
Brit01 is offline Brit01  United Kingdom
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Quote:
By "Bas' psu" I assume you mean the power supply that was in the Aikido PCB group buy? Then no, you don't need another filter cap, there is already one at the output (after the resistor).
Hi leadbelly. Yes the psu from his Aikido group buy.

Looking at the schematic below I can omit C1 then?

Also I see on JB's Aikido design he has a cap, C6, to ground from B+ before the plate. What is the purpose of this?
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Old 5th April 2009, 06:05 PM   #29
athos56 is offline athos56  United States
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Isn't that to provide decoupling between the halves of the tube?
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Old 5th April 2009, 06:15 PM   #30
Brit01 is offline Brit01  United Kingdom
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Sorry C5 I meant.
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