UCD 25 watts to 1200 watts using 2 mosfets

[manojtm]

what is the switching frequency?

@250KHz

Regards
MANOJ

 

[stewin]

thanks manoj you are a saint

 

[manojtm]

Hi ALL,

IRFP250 can switch up to 1MHz(1000nS). not tested with class d amp, simple oscillator used for testing(supply 24V)

Regards
MANOJ

 

[don2007ksa]

IRS2000D by Thienchay

To chago25,please check

 

[stewin]

hi all the correct artwork of irs900d

 

[jancso2002]

IRS 2000/3000

To chago25,please check

Hello, in this version we built four pieces, none work, even planting corrections pieces notified by the author.
enter only periodic oscillation and works only with two IRFB 2772
I say this because others have no trouble on this scheme

 

[jancso2002]

irs 900D

hi all the correct artwork of irs900d

Hello, in this version we built four pieces, with two IRFB 2772 powered by 75V, with small changes works perfectly. frequency is 450 KHz
which is the rated power of the amplifier and is the standard audio input

 

[ionutzxpo]

hy ,jancso IRFB4227,450Khz ....

 

[stewin]

Hi ALL,

IRFP250 can switch up to 1MHz(1000nS). not tested with class d amp, simple oscillator used for testing(supply 24V)

Regards
MANOJ

will this be true at +/-60vlts

 

[jancso2002]

ionutzxpo

hy ,jancso IRFB4227,450Khz ....

give 450 kHz, with your help and many thanks for the support given to you

 

[don2007ksa]

Hi jancso2002 the one i post is intended for chago25 for part's placement reference only not the P.C.B. layout.Don't be confused,if you already build the IRS900 then compare that layout to the one i post and you can see the difference.(please notice the P.C.B. layout)thank's.

 

[jancso2002]

Hi jancso2002 the one i post is intended for chago25 for part's placement reference only not the P.C.B. layout.Don't be confused,if you already build the IRS900 then compare that layout to the one i post and you can see the difference.(please notice the P.C.B. layout)thank's.

I do not confuse the scheme IRS 900 to IRS 2000, I wanted to say that even with modifications IRS 2000 base-emitter of transistor 2nXXXX not go into oscillation only periodically (PCB by Tien ....)

 

[Noobieme25]

NANOS PCB for 3 pair

warm regards
andrew lebon

http://www.diyaudio.com/forums/atta...sfets-289110_459208577444536_1689611297_o.jpg does this circuit is already tested? any comment?

 

[Mario Mota]

http://www.diyaudio.com/forums/atta...sfets-289110_459208577444536_1689611297_o.jpg does this circuit is already tested? any comment?

yes have tested the circuit. but is missing a capacitor 470N between feedings.

 

[andrewlebon]

Hello
greetings 3 pair amp tested with bd totem 3 pair irfp260n no issues with amp
sound quality or power
warm regards
andrew lebon

 

[Noobieme25]

Hello
greetings 3 pair amp tested with bd totem 3 pair irfp260n no issues with amp
sound quality or power
warm regards
andrew lebon

thanks for reply... hello andrewlebon do u have copy of its overlay? coz i cant see its schem or overlay parts just a pcb design tnx

 

[Hadighorbani]

Hi to all
HI sir manoj
sorry for my late
i have hisssss in my amp
when i conect gnd from my car cd payer to your amp gnd then it have hummmm
i try turn on your amp without power section
i use one lm7812 for bias but it dose not worked. why?
i cannot find out the amp FERQ beacuse i dont have that divases
how much value resistor for change FREQ
i need change over curent and short circute optione too. which resistor was do this to me?
thanks

 

[Hadighorbani]

HI stewin
do you creat sir manoj amp ver 1.1 ?
what is the problem in this versione ?
have nice time to all
thanks

 

[NMOS]

Hi to all
HI sir manoj
sorry for my late
i have hisssss in my amp
when i conect gnd from my car cd payer to your amp gnd then it have hummmm
i try turn on your amp without power section
i use one lm7812 for bias but it dose not worked. why?
i cannot find out the amp FERQ beacuse i dont have that divases
how much value resistor for change FREQ
i need change over curent and short circute optione too. which resistor was do this to me?
thanks

short question


what amp do you have build ?

can you send me schematic

 

[chago25]

To chago25,please check

thanks sir don2007ksa