Search found 9009 matches

by Paul Barker
Tue May 21, 2024 11:41 am
Forum: Everyones Projects
Topic: EL36 SE Triode from ETF 2006 build
Replies: 12
Views: 704

Re: EL36 SE Triode from ETF 2006 build

https://i.postimg.cc/CxZyZqpj/IMG-9293.jpg https://i.postimg.cc/zDjY4NkR/IMG-9294.jpg Here is a refresher of the cirquit. And a layout that may just fit togather. As this stands all big items on top. I wanted to make it compact for home listeing in living room on kef bookshelf speaker on stands. Th...
by Paul Barker
Mon May 20, 2024 4:17 pm
Forum: General Vinyl
Topic: 60Hz oscillator for turntables (also produces three phase)
Replies: 17
Views: 449

Re: 60Hz oscillator for turntables (also produces three phase)

Once you have to voltage amplify may aswell forget the behringer and build 3 class B push pull valve amps with a choke load on the output delivering direct to the three phases of the motor at 400v per phase. Whichever way you look at it chokes / autoformers are involved. Might be better to buy a rot...
by Paul Barker
Mon May 20, 2024 4:04 pm
Forum: General Vinyl
Topic: 60Hz oscillator for turntables (also produces three phase)
Replies: 17
Views: 449

Re: 60Hz oscillator for turntables (also produces three phase)

So I have to step up 56 to 400. Simplest route is a three phase 400v autoformer if there is such a thing. Its looking out of my price range.
by Paul Barker
Mon May 20, 2024 2:43 pm
Forum: General Vinyl
Topic: 60Hz oscillator for turntables (also produces three phase)
Replies: 17
Views: 449

Re: 60Hz oscillator for turntables (also produces three phase)

Nick wrote: Mon May 20, 2024 12:37 pm Three phases from Morgans circuit + one of these

https://www.behringer.com/product.html? ... e=0105-ABE

And three step up autoformers to match the motor voltage should do the job.
Ref step up transformers any idea what outlet voltage of behringer for audio might go to?
by Paul Barker
Mon May 20, 2024 2:34 pm
Forum: General Vinyl
Topic: 60Hz oscillator for turntables (also produces three phase)
Replies: 17
Views: 449

Re: 60Hz oscillator for turntables (also produces three phase)

Not bad price and probably perfect power wise better than inverter.
by Paul Barker
Mon May 20, 2024 7:43 am
Forum: General Vinyl
Topic: 60Hz oscillator for turntables (also produces three phase)
Replies: 17
Views: 449

Re: 60Hz oscillator for turntables (also produces three phase)

I think making a three phase turntable has more chance of success than fixing my machine tools problems. My uncle has bigger better more automated machine tools. But they wont come to me. He has step children who will inherit, and you will see them on the Yorkshire Auction House TV program. Oh yes h...
by Paul Barker
Mon May 20, 2024 7:26 am
Forum: General Vinyl
Topic: 60Hz oscillator for turntables (also produces three phase)
Replies: 17
Views: 449

Re: 60Hz oscillator for turntables (also produces three phase)

I beg you’re pardon my laithe is only an L5. At the moment though it needs a better motor. The problem is that most motors available run twice the speed an old laithe like this was designed for. I guess if I google the issue I’ll find my answer. I suppose I could always half the speed with a differe...
by Paul Barker
Sat May 18, 2024 8:33 pm
Forum: General Vinyl
Topic: 60Hz oscillator for turntables (also produces three phase)
Replies: 17
Views: 449

Re: 60Hz oscillator for turntables (also produces three phase)

Not trying to be clever but I have a Harrison vertical Milling Machine that is three phase which Im tricking with a capacitor to start a false phase, and boosed the voltage with a giant transformer wound with 3mm diameter winding wire but though it works its never as good a true three phaseI I could...
by Paul Barker
Sat May 18, 2024 8:14 pm
Forum: General Vinyl
Topic: 60Hz oscillator for turntables (also produces three phase)
Replies: 17
Views: 449

Re: 60Hz oscillator for turntables (also produces three phase)

Thank you Morgan. Im not sure I’ll build it for a while though. The uTracer 6 kit has arrived and Im to say the least overwhelm’d by the sight of that so far. Slowly slowly catchy monkey. I was going to build the ETF 6 eL36 but sod it I have a great sounding EL38 amplifier of my own design. Evry tim...
by Paul Barker
Fri May 17, 2024 11:42 pm
Forum: Valves
Topic: Dying Rectifier?
Replies: 28
Views: 907

Re: Dying Rectifier?

A pair of tv damper diodes is an option remember though the b pluss out (cathode)is the base pin not the top cap (anode). The heater to cathode can take a lot of voltage difference usually. For sound in centre tapped full wave valve rectifier set up potato mashers are great if they are still cheap e...
by Paul Barker
Tue May 14, 2024 9:43 am
Forum: Assorted Stuff
Topic: Possible Meet-up
Replies: 6
Views: 606

Re: Possible Meet-up

Damn I would have come but my Son is competing at Polaris grapling contest in Doncaster that day, and I have a ringside ticket. My Son needs the support its one of the most prestigous BJJ competitions. I think its at the Dome. I dont have a vehicle at the moment but Sam has a lift with his coach fro...
by Paul Barker
Sat Apr 27, 2024 4:44 am
Forum: Buying and Selling
Topic: auction tomorrow morning 11 am
Replies: 4
Views: 549

Re: auction tomorrow morning 11 am

Thanks both. I cant get there this year then. But good to know its not too late.
by Paul Barker
Fri Apr 26, 2024 5:25 pm
Forum: Buying and Selling
Topic: auction tomorrow morning 11 am
Replies: 4
Views: 549

Re: auction tomorrow morning 11 am

the px25 went for 140 but there is 22% buyers fee to ad, and if Id bid it would have gone above/ i cant afford for that/ taylor valve tester 140. same issue. no regrets. grumpy I didnt bid for px25 but only takes two to push it past 200 which I cant do. when I sell mine I'll not sell them here. hopi...
by Paul Barker
Fri Apr 26, 2024 11:00 am
Forum: Everyones Projects
Topic: Building the uTracer
Replies: 170
Views: 108248

Re: Building the uTracer

thanks. I have a gym appointment. I'll get back to it.

i suspect everything including the other guys various guis all have to spawn through Ronalds first gui. so I have to fix this. I think somehwere Roald staed the only three files you need. I'll start there when I get back to it.