Class D Amp with LM566, LM393 and 2XIRF530

[Hadighorbani]

2 time error in upload video file
sorry sir

 

[IRSound]

Hi Hadi ,

Please reduce your photo's size by using ACDsee software.
also , for you videos you can use IMtoo total video converter and convert your video files to another format with lower size.
anyway , i think you are using different mosfets , am i right ? you are using IRF640N isntead of IRFB4227 ?

Mile ,
thanks for good circuit..
how can we increase the output power ? for example 400-500w on 4ohm.

Regards,
IRSound

 

[Hadighorbani]

Thanks for your guide IRSound
sir mile please offer to me a preamp for increase the input to 1.5 V. i whant use this preamp for LPF too.
thanks

 

[apexaudio]

the sound is very good when out put power was about 50 watt.
i thing my power stage has error
i was used a transformer with + - 25 VDC 3A

Volume pot can't be conected direct on input you must have preamp or buffer for volume control.

 

[apexaudio]

Hi Hadi ,

Please reduce your photo's size by using ACDsee software.
also , for you videos you can use IMtoo total video converter and convert your video files to another format with lower size.
anyway , i think you are using different mosfets , am i right ? you are using IRF640N isntead of IRFB4227 ?

Mile ,
thanks for good circuit..
how can we increase the output power ? for example 400-500w on 4ohm.

Regards,
IRSound

D200 power is 400W/4R (with IRFB4227 and +/-75V DC rail)
Regards

 

[apexaudio]

Thanks for your guide IRSound
sir mile please offer to me a preamp for increase the input to 1.5 V. i whant use this preamp for LPF too.
thanks

Preamp and LPF you can find in thread: http://www.diyaudio.com/forums/analog-line-level/167363-mic-line-eq-preamps.html
Regards

 

[apexaudio]

the sound is very good when out put power was about 50 watt.
i thing my power stage has error
i was used a transformer with + - 25 VDC 3A

Amp can't have 50W with +/-25V, use +/-35V and TIP31C must have heatsink.

 

[IRSound]

Thanks Mile ,

i attached three photos about Crown XLS1500

the rail voltage of this amp is about +/- 75v same as D200 , also this amp use a pair of TO-220 in output stage , but crown claim that this amp can handle 300w @ 8 Ohm / 525w @ 4 Ohm / 775w @ 2Ohm

how it's possible ?

Regards ,
IRSound

 

[TDA4857]

good.

 

[TDA4857]

we also have this IR part , have any interest on it?

 

[andrewlebon]

classd

Hi Apexaudio
greetings interested in making your amp will FDA series mosfets
be ok to use in this amp
warm regards
andrew lebon

 

[apexaudio]

Thanks Mile ,

i attached three photos about Crown XLS1500

the rail voltage of this amp is about +/- 75v same as D200 , also this amp use a pair of TO-220 in output stage , but crown claim that this amp can handle 300w @ 8 Ohm / 525w @ 4 Ohm / 775w @ 2Ohm

how it's possible ?

Regards ,
IRSound

Crown XLS1500 use regulated SMPS in PSU, with SMPS D200 have same power as Crown.
Regards

 

[Hadighorbani]

thanks
the tone control have noise
i must creat preamp with LPF with 1.5 V in exit that

 

[apexaudio]

thanks
the tone control have noise
i must creat preamp with LPF with 1.5 V in exit that

Use XL2 active subwoofer x-over.

 

[apexaudio]

Hi Apexaudio
greetings interested in making your amp will FDA series mosfets
be ok to use in this amp
warm regards
andrew lebon

450kHz is to high for FDA, use IRFB31N20D... or change frequency to 250kHz.

 

[Hadighorbani]

xl2 have in output 1.5 v sir?

 

[Hadighorbani]

can i use irfp 250 ?

 

[apexaudio]

can i use irfp 250 ?

XL2 have 1.5V output and IRFP250 can't be use on 450kHz.

 

[Hadighorbani]

sir manoj say test irfp250.
this mosfet can work in 1mHZ he thing.

 

[apexaudio]

sir manoj say test irfp250.
this mosfet can work in 1mHZ he thing.

Yes but with high switching loses and IRFP250 will heat.
Use volume pot value 1-5k for test.