twocents, what's wrong with that V6 that you marked in the pic? The ST datasheet doesn't give any hint?!?
Best regards!
Best regards!
Hi Kay,
All fake chip i got have V6 written on it, They will fly to sky like a fire cracker when you use more than ±25V DC.
It seems V6 chips from mouser are free from firecracker syndrome.
Hi Vunce,
How it sounds? Please can i know your subjective perspective. Did you try any preamp?
All fake chip i got have V6 written on it, They will fly to sky like a fire cracker when you use more than ±25V DC.
It seems V6 chips from mouser are free from firecracker syndrome.
Hi Vunce,
How it sounds? Please can i know your subjective perspective. Did you try any preamp?
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There you go Vunce – a simple way to test how authentic your V6 Mouser chips (and mine in the shopping cart) are – please give them more than ±25V DC. Just wear safety goggles when doing this. 🙂
Hi Vunce,
That TO-264 ceramic insulator seems like it was made for this! Nice build! When will you be in stereo?
That TO-264 ceramic insulator seems like it was made for this! Nice build! When will you be in stereo?
Second channel hot off the press!!
I’ll have time to fire it up now, check offset, and pass the magic smoke test 😀. I believe tomorrow I will have full stereo enjoyment. I think I have a “doner” chassis I can use 😉
I know, my inductors look sad. I didn’t have enough magnetic wire on hand, so I unwound a pair of inductors I had in my parts bin and rewound them for this application.
I’ll have time to fire it up now, check offset, and pass the magic smoke test 😀. I believe tomorrow I will have full stereo enjoyment. I think I have a “doner” chassis I can use 😉
I know, my inductors look sad. I didn’t have enough magnetic wire on hand, so I unwound a pair of inductors I had in my parts bin and rewound them for this application.
Attachments
TO-264 ceramic insulator
Where can we get the TO-264 ceramic insulator and What PSU can be used for this amp something with 4 10,000 caps?
Where can we get the TO-264 ceramic insulator and What PSU can be used for this amp something with 4 10,000 caps?
Try ebay or Aliexpress,
The size is 22mm x 28mm
TO-220/247/264 Alumina Ceramic Insulator Sheet High Temperature Thermal Conduct | eBay
The size is 22mm x 28mm
TO-220/247/264 Alumina Ceramic Insulator Sheet High Temperature Thermal Conduct | eBay
Yes, better than just about everything (mica, keratherm, silicone, etc), except bare metal to metal with heatsink compound. There was a paper somewhere that measured the differences. We use it on Class A MOSFETs that dissipate 150w per die no problem.
I think Dibya have some ideas for PSU’s to use on previous post:
Xmas Amp - Dibya's TDA7293 by Jhofland
Hi X
Is this nice project similar to that group buy?
Folsom EC7293: PVI Powered Frontend, 60/120w 8/4ohm
Fab
Is this nice project similar to that group buy?
Folsom EC7293: PVI Powered Frontend, 60/120w 8/4ohm
Fab
Hi Fab,
The project by Folsom (Destroyer_OS) is very different in that there is a discrete 4 transistor front end that performs error correction. Destroyer_OS did not publish a schematic, so I can't say what it looks like. But Dibya's amp is much more straightforward - we are not using anything other than the TDA7293 chipamp to perform the amplification with its own intrisnic feedback and gain.
But thanks for pointing out that he also uses a TDA7293.
I plan to use Prasi's CRC board for my power supplies;
https://www.diyaudio.com/forums/group-buys/336572-lt4320-based-active-rectifier-46.html#post5962805
It shall work,I see no reason why it will not.
Quite Sci-Fi psu so kinda overkill. If you have it in hand why not? Isn't it point of diy?
Quite Sci-Fi psu so kinda overkill. If you have it in hand why not? Isn't it point of diy?
Yep, my spare Prasi CRC boards are sitting here cold and lonely in my desk drawer so why not use one - I think one board for both channels will suffice.
Had to laugh when I read your comment although I have to say if the chip wasn´t so expensive I´d only use these.
I would put it the other way round: it was time some engineers finally got rid of those medieval rectifiers that make you lose up to 2V on each rail.