±50V SMPS for Quasar Amps (& others)

[audiohead]

Hey Guys:

Could please stop this crap.

Art

 

[luka]

facultatea nu te invata cum sa faci ci sa stii unde sa cauti, sau in cazul vostru, numarul de tel al celui care stie.

ROFL good one, that last part 😀

 

[Krisfr]

I am curious as to which IR app note the designs are based on?

IF you send out the board and schematics by mail, what is to prevent the cloners from buying one too, and dup the new version 2?

Unless you have a unique part or two anyone can make copies for mass production.

Do a great job and charge a fair price and you will have business.....

What goes around comes around later....

 

[dudaindc]

...
Do a great job and charge a fair price and you will have business.
...

I second that - thanks!

 

[jkraxi]

The very soon release of our project. SMPS for solid state and tubes, ver.2

An externally hosted image should be here but it was not working when we last tested it.

 

[iTiberius]

From the version 1 we have improved our design as follow:

- very short path between capacitors and choppers (reducing EMI)
- very short path between IR2110 and gate choppers
- splitting control ground from chopper ground
- improved current protection
- remote control
- 110V and 220V operation
- flexibility - pcb will accept different types/sizes of capacitors
- litzwire winding for greater efficiency
- low loss EPCOS ferrite core
- +/-50V with fine trimming or +350V
- regulated + 9or12or15V and -9or12or15V or two regulated +6,3or12V at 1A

Regards,
Tibi

 

[jkraxi]

An externally hosted image should be here but it was not working when we last tested it.

 

[dudaindc]

It is nice to see some progress - thanks!

 

[iTiberius]

QUASAR SMPS ver2.

PCB boards QUASAR SMPS ver2.
More construction details will follow.

Tibi

 

[iTiberius]

BOM with components from TME and Farnell. Remove .doc extension.
Litzwire from elektisola.

Tibi

 

[microsim444]

I am unable to know how to buy that PCB, and from where.

the 1kw SMPS, double face

 

[microsim444]

We had few minor pcb mistakes which have been corected and we'll release gerbers (from corrected version 1) to public domain. 😉

We are preparing pcb version 2 which will be more flexible and probably partially monted (SMD parts).
The new board will allow tube fanatics to have a SMPS source as well. 😀


Regards,
Tibi

there is no shrt circuit protection out there, either current limit before shut down, i can offer that in return for two pcbs. if you wish

 

[iTiberius]

there is no shrt circuit protection out there, either current limit before shut down, i can offer that in return for two pcbs. if you wish

Version 2 have short circuit/current limit protection. You may see block schematic on vicol-audio web site, under products -> 1KW audio SMPS.

Regards,
Tibi

 

[iTiberius]

After so many simulations the real QUASAR SMPS ver.2 is ready.
Auxiliary +/-6,3 to +/-15V not mounted.

Regards,
Tibi

 

[iTiberius]

PWM module.

Regards,
Tibi

 

[iTiberius]

Making the trafo.

Making the trafo for a 2 x 51V output.
Use Litzwire 120 x 0.1
1. wind half of primary 12 turns


Regards,
Tibi

 

[iTiberius]

Making the trafo.

Making the trafo for a 2 x 51V output.
Use Litzwire 120 x 0.1
2. isolate with waxed paper

Regards,
Tibi

 

[iTiberius]

Making the trafo.

Making the trafo for a 2 x 51V output.
Use Litzwire 120 x 0.1
3. wind 2 x 9 turns secondary

Regards,
Tibi

 

[iTiberius]

Making the trafo.

Making the trafo for a 2 x 51V output.
Use Litzwire 120 x 0.1
4. again isolate with waxed paper

Regards,
Tibi

 

[iTiberius]

Making the trafo.

Making the trafo for a 2 x 51V output.
Use Litzwire 120 x 0.1
5. wind second primary part, 12 turns.

You may add an copper shielding. I didn't had copper foil so ...
The trafo is ready to be mounted.

Regards,
Tibi