quasar amplifier by dr bora 1000 watt

[boraomega]

The rails in schematic do not carry any current....

 

[wattaniya]

The rails in schematic do not carry any current....

with one psu can i supply left and right? or need two psu?

is it ok the 5watt resistors mounting. see the pdf.

 

[boraomega]

with one psu can i supply left and right? or need two psu?

No need for separate PSU. Both "sides" are connected to the same point on PSU just with separate "heavy" wires for "left" and "right" side.

is it ok the 5watt resistors mounting. see the pdf.

It is not designed for such positioning of source resistors, but it is on you how will you arrange that. It will work in both versions.

 

[wattaniya]

thank u boraomega for the reply,
now i can proceed to make pcb.

 

[wattaniya]

hi boraomega,
pls , can u tell me the direction of those presets correct or not?
any suggestions of this layout.?

 

[wattaniya]

hi boraomega,
any suggestion for last post.

 

[boraomega]

Sorry Wattaniya, due to my health issues and various family and business activities, I am not and can not be very regular forum visitor. I also neither have time nor strength to analyze and answer every question and it comes 30-50 Emails average every day and on top of that there are threads on various forums... On the other hand, if you chose to make your own PCB design, you should be able to check if it is OK or not.

 

[wattaniya]

the layout is same as yours,

 

[boraomega]

I haven't check it Wattaniya, but if it is exactly as my PCB I don't see what am I suppose to check further?

 

[Rembulan]

Wattaniya,

Do you have gerber file from your PCB ?

 

[greenocean]

Because of higher internal capacitances. Several people (not all!) got serious problems when using IRFP250, 260, 460 and other types.

i have experienced problem with irfp460 in my design (not quasor amp). i got oscillation when turned it on(like hum) and disappear when i open volume pot
then I try replacing IRFP460 with IRFP250 and the problem solved

 

[NMOS]

Hi,

old Thread, I dont know somebody interested

5 years no postings, Dr. Bora website also is offline,
I dont know what happened with him, no new postings


During Summertime, i get big boring,.....in this case I have redesigned PCB Quasor 1000W / 4 OHM Mosfet Amp for SMD devices 170 x 80 mm

and want compare sound quality Quasor Mosfet 1000W RMS v/s similar High Power Class-D Amplifier D4K5

Does Quasor Amplifier Dr. Bora Design 100 % working ?

Attachment picture Quasor Mosfet Amp for test with 1 mosfet pair.


I can share Gerber,...

 

[zjjwwa]

Can you please post the associated schematic, or the original schematic?

 

[NMOS]

look attachment original schematic have some faults, missing miller capacitorat driver Amp will oscillate Update PDF my revised schematic P1 and P2 is for overload and short circuit protection circuit P3 + 10V Bootstrap for symmetrical clipping

 

[dexter]

if I'm not mistaken Dr Bora Passed Away in 2016.
RIP Dr Bora.

Hi,

old Thread, I dont know somebody interested

5 years no postings, Dr. Bora website also is offline,
I dont know what happened with him, no new postings


During Summertime, i get big boring,.....in this case I have redesigned PCB Quasor 1000W / 4 OHM Mosfet Amp for SMD devices 170 x 80 mm

and want compare sound quality Quasor Mosfet 1000W RMS v/s similar High Power Class-D Amplifier D4K5

Does Quasor Amplifier Dr. Bora Design 100 % working ?

Attachment picture Quasor Mosfet Amp for test with 1 mosfet pair.


I can share Gerber,...

 

[NMOS]

if I'm not mistaken Dr Bora Passed Away in 2016.
RIP Dr Bora.

Sure ?

 

[NMOS]

Does Quasor Amp really working stable ?

I dont find much information,

peope only talk strong and clear sound ?

Who build this amp ?