jonclancy
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Post by jonclancy on Apr 7, 2012 14:34:40 GMT
OK, seems there is STILL interest in JLH's enduring work out there.
So... The "Black" Edition
Ideas welcome. I'll kick off...
Single?
Dual (GE Special)?
SMD (WW Special)?
I have a Charity in mind, but am entirely open to suggestions.
A good idea, or dead horse?
Cheers
Jon
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Deleted
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Post by Deleted on Apr 7, 2012 14:55:44 GMT
Hi John great Idea I'm still getting requests for them my vote would be SMD single and double as the SMD could be useful to reduce the size a little. now that we have our SMD eye in take care
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Post by Deleted on Apr 7, 2012 15:27:57 GMT
I really don't need any more, tempted though I am to keep my 'every version' collection up to date!
What about a combined PSU/JLH version like Alan's superb design?
Syd
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jonclancy
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Post by jonclancy on Apr 7, 2012 16:00:48 GMT
All possible - was could do a scored board, perhaps? Or cut line - - - - - - ?
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Deleted
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Post by Deleted on Apr 7, 2012 17:20:59 GMT
SMD JLH/PSU sounds interesting. Taking into account preferences for low ESR caps of various ratings, poly caps of different flavours, the Tosh transistors and also different board voltage capabilities, is this all possible with an SMD board?
If yes, very cool.
If no, then some GE dual JLHs would be nice.
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xerxes
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Post by xerxes on Apr 7, 2012 18:09:25 GMT
How about a combined PSU and JLH, which can easily be separated, so you can cut the board for one part or the other. In addition a single design, that can easily be combined for dual +/- PSU/JLH.
That will pretty much cover all the bases and make it really versatile.
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Post by Deleted on Apr 7, 2012 22:38:20 GMT
Hi John great Idea I'm still getting requests for them my vote would be SMD single and double as the SMD could be useful to reduce the size a little. now that we have our SMD eye in take care Hi Shaun Allan Pagan thought of that a long while ago, but AFAIK,SMD caps aren't available in large enough values. Another problem with capacitors that size is the very low ripple ratings, so they are not likely to last long, and may result in other damage. Regards Alex
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Post by Deleted on Apr 7, 2012 22:40:48 GMT
Perhaps they would be even more useful if they were scored down the centre, so they could be split and stacked if need be ?
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Post by Deleted on Apr 7, 2012 23:22:43 GMT
Hi John great Idea I'm still getting requests for them my vote would be SMD single and double as the SMD could be useful to reduce the size a little. now that we have our SMD eye in take care Hi Shaun Allan Pagan thought of that a long while ago, but AFAIK,SMD caps aren't available in large enough values. Another problem with capacitors that size is the very low ripple ratings, so they are not likely to last long, and may result in other damage. Regards Alex Hi Alex just a little wishful thinking on my part but the idea of a Greg E type board with perforations to allow splitting and stacking sounds great. take care
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pagan
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Post by pagan on Apr 8, 2012 1:09:05 GMT
Yes Alex That was a long time ago As for SM caps, Vishay seem to have larger ones now. www.farnell.com/datasheets/614594.pdfBut as for size, not much smaller. anyone know of some others? The BC550/560 have the BC8** series in SM. There's still a problem with the Toshiba 2SA/2SC replacements. power wise. Anyone know of a suitable alternative? Allan
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Post by Deleted on Apr 8, 2012 1:41:16 GMT
Allan Only around 1500mA ripple current vs. 2500 for the present Suntan 4,700uF 10V low ESR . I would want the highest possible for use with SMPS,especially if inside a PC like my latest JLH.(for LG BR writer) DaveK is getting good results from a JLH supplying his Asus sound card's molex connector.Dave is claiming that even coax SPDIF is further improved. Alex P.S. You really need to hear the internal JLH combo + Safe Mode Rips. "Yello-Bostich (Reflected) " sounds sensational via headphones.
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pagan
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Post by pagan on Apr 8, 2012 4:35:16 GMT
Allan Only around 1500mA ripple current vs. 2500 for the present Suntan 4,700uF 10V low ESR . I would want the highest possible for use with SMPS,especially if inside a PC like my latest JLH.(for LG BR writer) DaveK is getting good results from a JLH supplying his Asus sound card's molex connector.Dave is claiming that even coax SPDIF is further improved. Alex P.S. You really need to hear the internal JLH combo + Safe Mode Rips. "Yello-Bostich (Reflected) " sounds sensational via headphones. Alex And the SM caps arn't much smaller either.. another note Just got my other speakers running 30mins ago.... not bad Allan ps just thought of something "Ripple Eater Black Edition" Don't make the pcb black. it's a pain to follow tracks...
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Post by Deleted on Apr 9, 2012 2:17:04 GMT
Allan Perhaps Jon means a "Black Label" Edition, like a fine Scotch Whisky ? I would also suggest 2oz. copper , as the JLHs are now being used at much higher currents than the original design was ever intended. Although I can understand Jon's desire to support a charity, Greg's dual PCBs were so affordable that you could afford to stock up on them, and even stick the odd one in the mail free of charge. Alex
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jonclancy
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Post by jonclancy on Apr 9, 2012 14:45:01 GMT
Hi Alex, Allan, I was going to use a Black solder mask - if only to provide a match for Will's Dual Regs and the Class A boards. Depending on where we go with this, quantity-wise, I can do a couple of colours. As it's a raft of work running the GB, I thought it would be worth supporting a charity on the back of that work. If we just want to do, say, 60 boards on this run (which is much easier on the bank account anyway), then they can be done at cost and I'll save the community work for the next project (which is probably the slumbering PSU design - Will's excellent boards removed an immediate need for me!!). There are people over at DIYA who are asking for a further run. I'm in the same boat as Syd - got enough to get by on for the next couple of projects at least. But, if there is demand, I think we can move to meet it... Cheers Jon
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Post by Deleted on Apr 9, 2012 15:24:44 GMT
Hi Guys, I'm no good at soldering and could not interpret a circuit diagram to save my life but I have become very aware that DIY offers the best 'bang per buck' in hifi, even if you have to pay commercial rates to get the DIY bit done . So add me to the list of interested parties in these boards but I may ask some numpty questions on the way . Dave.
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jonclancy
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Post by jonclancy on Apr 9, 2012 21:02:01 GMT
I'm no good at soldering and could not interpret a circuit diagram to save my life ... With a few hints from us here and then some practice, the first is easy to overcome. You don't need to worry about the second - painting by numbers!
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Post by Deleted on Apr 9, 2012 21:23:44 GMT
Jon, nice of you to say so - thanks - I've done a bit of soldering and managed a few joints etc but I would not say I can solder. I don't like asking too many numpty questions, which is what I would finish up doing. Things like, "Which way round do these fit, how close to the board should they be, what do I do now I've 'disappeared' the solder pad on the board etc., etc., I have a good relationship with a guy who is an ace solderer, an audiophile and an electronics engineer so I choose the easy option. Being a tight Yorkshiremanit would break my heart if I ruined a PCB by doing something silly, which doesn't help . Cheers, Dave.
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Post by Deleted on Apr 10, 2012 0:57:32 GMT
Hi Jon Unlike Allan. I don't think that black masking will be a problem with single layer PCBs.I think that for the less experienced, it would be best to stick with a single layer 2oz. copper version for any splittable and stackable version of Greg's PCBs, or for that matter, I rather like Greg's present version which has stood the test of time. It is easy to work with, and rectifying errors or repairing is unlikely to cause track damage, even for a novice. IMO, dual layer versions should only be used where compactness and stackability is a pre-requisite. Will's existing version is ideal for that install and forget requirement, where the PCB is unlikely to be reused for another project further down the track.
Kind Regards Alex
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jonclancy
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Post by jonclancy on Apr 10, 2012 10:30:57 GMT
IMO, dual layer versions should only be used where compactness and stackability is a pre-requisite. Will's existing version is ideal for that install and forget requirement, where the PCB is unlikely to be reused for another project further down the track. Seems like three options are emerging: 1. Re-run the single, dual-layer version. 2. Run a larger batch of Greg's board (if he's happy for us to do so) 3. Power up the RG Skunkworks lab and come up with a new design that includes a PSU. Keep the ideas coming...!!
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Post by Deleted on Apr 12, 2012 10:38:40 GMT
Seems like three options are emerging: 1. Re-run the single, dual-layer version. 2. Run a larger batch of Greg's board (if he's happy for us to do so) 3. Power up the RG Skunkworks lab and come up with a new design that includes a PSU. Keep the ideas coming...!! Hi Jon, I have a "newer" version of the dual PCB just about ready that can be used in a GB. It has a lots of minor enhancements (probably only visible on a 24 inch screen though), but no major changes. Generally it has thicker traces, more terminals and a thing or two I pinched from Will. Any major change I am doing is to a dual-layer single version I am designing for personal use. I can't see it being as compact as Will's version though. I am a fan of lots of small PCBs rather than larger multifunctioned PCBs, so you won't find a combined PSU and JLH from me. I have a restriction on PCB size because of my Eagle license. regards
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Post by Deleted on Apr 12, 2012 10:47:00 GMT
I feel the same as Greg about this. Larger multifunction PCBs can save wiring, but can be much harder to slot in with existing PCBs such as in the SC DAC etc. Heatsinking of larger current Voltage Regulators can be awkward too layout wise, with much larger multifunction PCBs. Alex
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Post by Deleted on Apr 12, 2012 15:45:25 GMT
I feel the same as Greg about this. Larger multifunction PCBs can save wiring, but can be much harder to slot in with existing PCBs such as in the SC DAC etc. Heatsinking of larger current Voltage Regulators can be awkward too layout wise, with much larger multifunction PCBs. Alex Hi Jon yes me too I'd much rather go for the modular approach with separate PSU and JLH. pretty much for the reasons that Alex outlined above and also to make fault finding a little easier for newer DIYers. It seems to make more sense to me to have a little flexibility in terms of board placement IE i like to keep the noisy part of the reg away from the audio side and bump the JLH in as close as possible. is it going to be possible to do single and double JLH? mmmmmmmmmmm Hi Greg sounds interesting will you be making the artwork available for DIY etching? i hope so as the two JLH boards you sent me where really nice to work with and are now doing sterling work in Alex's class A. take care
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xerxes
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Post by xerxes on Apr 12, 2012 18:08:10 GMT
If it's designed well it could be both. A board that includes a PSU and JLH, that can be cut, if you want them separate.
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XTRProf
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Post by XTRProf on Apr 12, 2012 19:03:04 GMT
How about a PS PCB big enough to accomodate all those big boutique components too? I find those PS kits too cramp for those boutique components. That will be very useful too.
I think keeping the PS and Ripper Eater separate will be better as then we have have choice for even better stuffs.
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Post by Deleted on Apr 12, 2012 19:17:36 GMT
If it's designed well it could be both. A board that includes a PSU and JLH, that can be cut, if you want them separate. Problem I see with that is that wouldn't it mean that you would have to buy them in pairs /sets when you might want more of one than t'other?
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