"DIY 1.5KW Bipolar Class-H"

[kaylan]

Switching working right
red line is the switching
the signal is 60hz load 2ohms.

60hz 2homs.

100hz 2homs.

 

[kASD]

Switching pulse shape is PERFECT...........!!!!!

 

[Bigbass]

Switching pulse shape is PERFECT...........!!!!!

What is that a “ REAL OSCILLOSCOPE OR COMPUTER” simulation?

 

[kASD]

Are you ignorant enough, can't you see its a real, where is the computer simulation?

 

[Bigbass]

Are you ignorant enough, can't you see its a real, where is the computer simulation?

Workhose keep calm, we know that’s way we asked?
Pls. Try 2 khz @ 2r, we see if it is Perfect. okay.

 

[wintermute]

workhorse for someone not familiar with the software used for creating those graphs, I think it was a perfectly reasonable question.

 

[angeltech]

How's the progress of this project?

How the progress of the project,seems this amp goes even much power in it...🙂

 

[adamkaktus]

Hello, i know that this is old thread, but i have question, is there any one-sided PCB maybe in SMT? I make PCB by laser printer, so double sided with VIAs is out of reach. Have it anybody? Maybe i should maki it by myself. I think it could be possible to make it on double sided, but with different layot, f.e. power lines on the other side + GND plane, other small part on the top layer. What do you think about it?

 

[kASD]

Give it a try and let us know all

 

[ravpreet420]

hello workhorse
Can i use +/-90vdc and +/-180dc supply ?
wattage at 4r ?
what changes in circuit ?

 

[kASD]

Only With 350V devices like MJL4281/4302 ONSEMI pairs you can use that much high rails.
Some changes in circuit are required, VAS Transistors and capacitor voltage ratings will be altered to suit high voltage operation. If your power supply is stiff enough you can easily get over 2kw into 4ohms.

Don't use 230V devices like Toshiba 5200/1943 pairs at rails greater than +/-70V||+/-140V .

 

[ravpreet420]

Thanks for quick reply

 

[mkubawat]

Only With 350V devices like MJL4281/4302 ONSEMI pairs you can use that much high rails.
Some changes in circuit are required, VAS Transistors and capacitor voltage ratings will be altered to suit high voltage operation. If your power supply is stiff enough you can easily get over 2kw into 4ohms.

Don't use 230V devices like Toshiba 5200/1943 pairs at rails greater than +/-70V||+/-140V .

What about MJL21193 /94, can i use these ONSEMI pairs for 2 ohms.
thanks

 

[kASD]

You can use them for max +/-80 || +/-160V. Parallel 8 pairs for 2 ohm operation

 

[mkubawat]

You can use them for max +/-80 || +/-160V. Parallel 8 pairs for 2 ohm operation[/QUOTE
Thanks a lot
8 pairs or parallel 8pairs , i;m confused.
please tell me.

 

[kASD]

Confused soul first tell me what is difference between 8 pairs and 8 parallel pairs??

 

[Lazy Cat]

Confused soul first tell me what is difference between 8 pairs and 8 parallel pairs??

🙄 🙂 😀

 

[aman khalsa]

Confused soul first tell me what is difference between 8 pairs and 8 parallel pairs??

hehehe...

 

[Kv3audio]

Some PCBs for Class-H are available here

http://www.diyaudio.com/forums/vendors-bazaar/177120-professional-class-h-amplifier-2kw-9.html

POST89

Limited number is out there...

 

[rahkik]

any one can tell me how to calculate transformer