Andrew, I am considering a project with a pair of 6H30s to warm up and I two of these heater supplies available.
6H30 filaments are 6.3V @ 1.65A or 12.6V @ 0.825A; I guess that's asking a bit too much of these supplies?
Thanks
Ray
6.3v indirectly heater valve PCB (possible group buy?)
#451 Re: 6.3v indirectly heater valve PCB (possible group buy?)
Sorry, I couldn't resist!
#452 Re: 6.3v indirectly heater valve PCB (possible group buy?)
Hi Ray,
One per valve should be fine.
Andrew
One per valve should be fine.
Andrew
Analogue, the lost world that lies between 0 and 1.
#453 Re: 6.3v indirectly heater valve PCB (possible group buy?)
Thanks Andrew, will life be easier for the supplies at 6.3 or 12.6V. I think 12.6 would be best; if so can you advise on the required voltage setting R values.
Ray
Ray
Sorry, I couldn't resist!
#454 Re: 6.3v indirectly heater valve PCB (possible group buy?)
Hey Ray,
Try the notes, should all be in there, if not let me know.
http://www.audio-talk.co.uk/phpBB3/view ... =19&t=4964
Andrew
Try the notes, should all be in there, if not let me know.
http://www.audio-talk.co.uk/phpBB3/view ... =19&t=4964
Andrew
Analogue, the lost world that lies between 0 and 1.
#455 Re: 6.3v indirectly heater valve PCB (possible group buy?)
You're right Andrew, I had forgotten about them.Andrew wrote:Hey Ray,
Try the notes, should all be in there, if not let me know.
http://www.audio-talk.co.uk/phpBB3/view ... =19&t=4964
Andrew
Cheers.
Ray
Sorry, I couldn't resist!
#456 Re: 6.3v indirectly heater valve PCB (possible group buy?)
Andrew, I think there may be an error in the Stacks section info for this project?
I'm planning on using one of these supplies at 12.6V to supply two 6.3V filaments in series. The Stacks info says;
Ray
I'm planning on using one of these supplies at 12.6V to supply two 6.3V filaments in series. The Stacks info says;
Assuming R5 is always 120R, I think it should read 'R6 + R7 should be 1.2K + 56R (ish)''?Andrew wrote:For 12.6v operation, if you have the kit, you need to up-rate the input cap to something like 6800uF @ 25v, watch out for the part's diameter. A 25mm diameter cap is a very tight squeeze and obtaining a 10,000uF at 25v at 22m is quite a challenge, however 6800uF 25v 22mm is fine. R5 + R6 should be 1.2k + 56R (ish). At a minimum a 12v AC TX should be fine.
Ray
Sorry, I couldn't resist!
- Dave the bass
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#457 Re: 6.3v indirectly heater valve PCB (possible group buy?)
..also...caps sized 10,000uF but approx 22 meters in length or height are pretty hard to come by too! The local postman is not going to be happy I can tell.
"The fat bourgeois and his doppelganger"
#458 Re: 6.3v indirectly heater valve PCB (possible group buy?)
Thanks for the feedback guys, I have fixed the Stack's post.
cheers,
Andrew
cheers,
Andrew
Analogue, the lost world that lies between 0 and 1.