UCD 25 watts to 1200 watts using 2 mosfets

[rezamir]

hi opor
Voltage Power Supply is how much?
best regards

 

[opor]

My supply rail is +-68V . Here is my schematic . I will post some picture ASAP.

 

[ionutzxpo]

hi to all!!! at first when i build the amp ,the IR2110 was FAKE! i bought 2 off them both FAKE! after i bought the third IR2110 the amp came to life.....the sound is just amazing...very clear ...i use IRFP260 they are cold ....the output coil is hot..i use a toroid from an old pc power supply ....but even with that the amp works very well and sunds great...(sorry for my english)
http://s957.photobucket.com/albums/ae59/ionutzxpo/?action=view&current=06062010005.flv

 

[rezamir]

hi dear
what voltage rails are you using
thanking you

 

[savu]

hi dear
what voltage rails are you using
thanking you

He uses +/- 28Vdc for the moment for tests.

After all is tweaked and the SMPS is ready we will connect it at +/- 95Vdc.

Regards,

Savu Silviu

 

[qsa]

He uses +/- 28Vdc for the moment for tests.

After all is tweaked and the SMPS is ready we will connect it at +/- 95Vdc.

Regards,

Savu Silviu

do you have any idea how to add effectice short circuit and overcurrent protection..?

I think this is important thing

 

[rezamir]

hi all
I made this Amplifier
Sound is good
Mosfet is not hot,but the output coil is hot
My supply rail is +-68V
do you have a good idea for this problem?
sorry for my english
best regard

 

[savu]

Hi Razamir,

Use T 106-2 micormetals iron powder core for the output inductor.

Regards,

Savu Silviu

 

[ejtagle]

Just to give you some ideas... Using a 555 monostable, some transistors (or perhaps, a plan comparator, you can easily use the shutdown input of the IR211x to implement an overcurrent/short circuit protection protection

 

[qsa]

Just to give you some ideas... Using a 555 monostable, some transistors (or perhaps, a plan comparator, you can easily use the shutdown input of the IR211x to implement an overcurrent/short circuit protection protection

can you offer schematic ?

its new for me ....

 

[opor]

This is mine .

 

[andrewlebon]

hi opor
greetings nice amp have u made new pcb design how is the amp working
and how powerful is it have u increased supply voltage
thanking you
andrew lebon

 

[opor]

Yes, I have made my own pcb. It works well. Amazing . I have not try to increase power rail yet. I will do it soon. But I have the same problem like many guy,coil is hot.Even through I try to use good coil from broken Behringer amp. Waiting for some suggestion.

 

[ionutzxpo]

class d

hi opor! can u share your PCB whit us/

 

[opor]

Sure.

 

[ionutzxpo]

opor use T106-2 from micrometals (iron powder core)

 

[vijay_meyou]

Sure.

Hi opor,

Is it double layer pcb?

vijay

 

[gogowatch]

Hello opor,

Appreciate if you could print the PCB layers into PDF or graphic file format.

Many thanks.

 

[rezamir]

hi opor
Do you have output scope diagrams and so on to share ?

best regards,

 

[opor]

Hi,
It is PTH pcb.