±50V SMPS for Quasar Amps (& others)

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
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....
 
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
 
QUASAR SMPS ver2.

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

Tibi
 

Attachments

  • IMG_1781.jpg
    IMG_1781.jpg
    113.8 KB · Views: 1,179
  • IMG_1782.jpg
    IMG_1782.jpg
    99.2 KB · Views: 803
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. :D


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
 
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
 

Attachments

  • IMG_2312.jpg
    IMG_2312.jpg
    78.8 KB · Views: 680
Last edited by a moderator:
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.