Search found 2845 matches

by Ray P
Sun Jun 16, 2019 11:45 am
Forum: Everyones Projects
Topic: The Other 13E1 SE-OTL
Replies: 117
Views: 5787

Re: The Other 13E1 SE-OTL

I guess the thing to do is build one and test run it with a load resistor to see how it goes over a longish period of time.
by Ray P
Sat Jun 15, 2019 10:18 pm
Forum: Everyones Projects
Topic: The Other 13E1 SE-OTL
Replies: 117
Views: 5787

Re: The Other 13E1 SE-OTL

Yes, that's the sort of thing I had in mind Phil. What voltage/current did you run it at and was it reliable?
by Ray P
Sat Jun 15, 2019 7:20 pm
Forum: Everyones Projects
Topic: The Other 13E1 SE-OTL
Replies: 117
Views: 5787

Re: The Other 13E1 SE-OTL

If its a simple linear then yes, Current * ( Vin - Vout) is roughly the dissipation in the regulator. But its a different matter if its a switching regulator. Cheers Nick. I was thinking LT1084 in a very simple voltage regulator circuit (essentially as per datasheet) and aiming for 28.5V raw DC on ...
by Ray P
Sat Jun 15, 2019 7:05 pm
Forum: Everyones Projects
Topic: The Other 13E1 SE-OTL
Replies: 117
Views: 5787

Re: The Other 13E1 SE-OTL

It seems like an unnecessary complication without context. Although I'm sure there is a reason As Paul said Ant, I've noticed that there are times when simple AC heating exceeds the voltage rating of the filament - I assume that over time this might result in a reduced life for the 13E1s with the t...
by Ray P
Sat Jun 15, 2019 12:13 pm
Forum: Everyones Projects
Topic: The Other 13E1 SE-OTL
Replies: 117
Views: 5787

Re: The Other 13E1 SE-OTL

Just thinking out loud about the options for powering the 13E1 filaments, any thoughts on a DIY circuit for a linear supply that would be suitable? 13E1 datasheet gives filament spec as 26V @ 1.3A or 13V @ 2.6A. There are voltage regulator devices that seem to have the right voltage and current numb...
by Ray P
Thu Jun 13, 2019 9:22 pm
Forum: Everyones Projects
Topic: The Other 13E1 SE-OTL
Replies: 117
Views: 5787

Re: The Other 13E1 SE-OTL

Thanks for the tips on using SMPS for the filaments chaps. The module is made by Mean Well, which I think indicates a measure of quality coincident with Nick's point. I'll follow up on the common mode filter suggestion too - may come back for a bit more of a steer when I manage to get confused! The ...
by Ray P
Thu Jun 13, 2019 6:34 am
Forum: Everyones Projects
Topic: The Other 13E1 SE-OTL
Replies: 117
Views: 5787

Re: The Other 13E1 SE-OTL

As I mentioned on Steve's 13E1 project thread, I have a Mean Well SMPS that is capable of delivering 26V 4A and I'm thinking of trying it for the 13E1 filaments (I've been using AC so far) - not expecting the sound to be transformed in any way but 13E1s aren't common or cheap so considerations are a...
by Ray P
Wed Jun 12, 2019 10:27 pm
Forum: Everyones Projects
Topic: 6C33C SE-OTL Project
Replies: 81
Views: 8701

Re: 6C33C SE-OTL Project

Again, more Owston affect, but I've decided that I will resurrect this project - I may as well use all the parts I've gathered as there was no interest in someone taking them off my hands. It'll be interesting to compare the 6C33C and 13E1 - the amps won't be identical (slightly different driver sta...
by Ray P
Wed Jun 12, 2019 10:20 pm
Forum: Everyones Projects
Topic: Remember These?
Replies: 647
Views: 25220

Re: Remember These?

Yes, space is always a limiting factor in a domestically acceptable project. I only ask because you mentioned it at Owston - as an experiment you could hang some wires out of the bottom of the chassis to a remote SMPS but that becomes a dangerous game if you like the result, sometimes ignorance is b...
by Ray P
Wed Jun 12, 2019 10:14 pm
Forum: Everyones Projects
Topic: Latest DSD Decoder Project
Replies: 11
Views: 1722

Re: Latest DSD Decoder Project

I've left this project for too long after getting a bit disillusioned by problems when I tried testing it - just couldn't get it to play music. Freshly motivated by the Owston affect, I decided it was time to crack it once and for all so I've spent a good few hours chasing myself in circles trying t...
by Ray P
Wed Jun 12, 2019 10:02 pm
Forum: Everyones Projects
Topic: Remember These?
Replies: 647
Views: 25220

Re: Remember These?

Steve, did you think any more on running DC filaments on the 13E1s. I've got a Mean Well SMPS with a nominal rating of 24V 4A that I was thinking of trying; the output voltage can be tweaked a little to a maximum of around 28V so pretty much ideal for the 13E1s. The filament supplies shouldn't be qu...
by Ray P
Sun Jun 09, 2019 10:57 am
Forum: Assorted Stuff
Topic: The Audio-Talk Cycling thread.
Replies: 1993
Views: 140015

Re: The Audio-Talk Cycling thread.

Am I the only one riding? Working towards my next big 118 mile charity bike ride in 4 weeks time... Departed: Jun 09, '19, 07:00AM Starts in: Taunton Deane, England, GB Distance: 42.9 mi Elevation: + 3594 / - 3595 ft Max Grade: 13.4 % VAM: 590 Vm/h Moving Time: 02:55:42 Calories: 1758 Avg. Watts: 16...
by Ray P
Mon Jun 03, 2019 11:23 pm
Forum: Everyones Projects
Topic: Remember These?
Replies: 647
Views: 25220

Re: Remember These?

jack wrote:
Mon Jun 03, 2019 10:38 pm
Glad there's a result. I'll look up the Farnell p/n for them ferrites...
Yes please Nick - it looks as though I'll need to get hold of some for my project.
by Ray P
Mon Jun 03, 2019 10:09 pm
Forum: Assorted Stuff
Topic: When is a pie not a pie?
Replies: 15
Views: 303

Re: When is a pie not a pie?

mainscablesrus wrote:
Mon Jun 03, 2019 9:58 pm
Ray put your glasses on mate and read his post.
Image
by Ray P
Mon Jun 03, 2019 9:55 pm
Forum: Assorted Stuff
Topic: When is a pie not a pie?
Replies: 15
Views: 303

Re: When is a pie not a pie?

mainscablesrus wrote:
Mon Jun 03, 2019 9:18 pm
Some questions have an obvious answer, Greg is 100% correct. :D
No he's not! Greg describes using suet - suet is used in puddings so what he describes is a steak and kidney pudding not a pie.