I use IRF640, the coil is a T94-2 with around 45 turns of 0.5mm or something wire on it on it.
The power i dunno.
The power i dunno.
what is the + - Vcc applied?
by the listening impressions,do u think that it is powerful enough to boom a subwoofer?
have u tried paralleling the mosfets?
the two rectangle boxes,i suppose they are power supply + - V?
Sagar
I use 2x19v rails, i have driven my 2ohm subwoofer with it and the drivers bottomed out when playing loud.
One problem with it is that it beeps faintly on a freq that sounds like 2-5khz but that can prolly be fiwed with the output filter and adding of a post filter feedback and error amp.
Tho the beep is not heard with a subwoofer connected.
Tho the beep is not heard with a subwoofer connected.
beep
plz draw the 'proposed cure'' schematic.
can i use IRF540 with this amp of yours?
how high can the +-V go,ie the safe max. with 640 and 540?
Sagar
plz draw the 'proposed cure'' schematic.
can i use IRF540 with this amp of yours?
how high can the +-V go,ie the safe max. with 640 and 540?
Sagar
whatever be it,as u are saying it plays and it plays good.
i will make it soon and use IRF540 and +-27V supply.
Sagar
i will make it soon and use IRF540 and +-27V supply.
Sagar
You may want to replace the IR2111 with something better, like IR2011 that is designed for class d audio.
For IR2010, IR2110, IR2113, just add a second comparator but wire is opposite to the one in the schem, swap the inputs.
For IR2010, IR2110, IR2113, just add a second comparator but wire is opposite to the one in the schem, swap the inputs.
getting these ic would be a real pain in ***.
i will have to go to the big main mkt of Delhi for that🙁 .
neway,is there a way to order free samples??
Sagar
i will have to go to the big main mkt of Delhi for that🙁 .
neway,is there a way to order free samples??
Sagar
that means a long trip to that dingy market.
will make this amp for sure,its so simple,the catch is so irresistable!
Sagar
will make this amp for sure,its so simple,the catch is so irresistable!
Sagar
screechhhhhhhhhhh!
what r u saying now in the end when i am all set to make it as my first class d amp?
R U sure that the new scheme u post is correct?
BTW have u done it on PCB?
can u post the pics of finished amp.
Sagar
what r u saying now in the end when i am all set to make it as my first class d amp?
R U sure that the new scheme u post is correct?
BTW have u done it on PCB?
can u post the pics of finished amp.
Sagar
neat work😎
and that prize of all in a class d amplifier...NO HEATSINK!
i will make a pcb and then go ahead.
i will try replace TLC393 with a opamp comparator.
using two dual opamp chips,2 opamps for the main scheme and one will be wired as a comparator and other as a preamp.
Sagar
and that prize of all in a class d amplifier...NO HEATSINK!
i will make a pcb and then go ahead.
i will try replace TLC393 with a opamp comparator.
using two dual opamp chips,2 opamps for the main scheme and one will be wired as a comparator and other as a preamp.
Sagar
thanks for the warning but l i had wired opamp as a comparator before and it worked well.
but as u saying,so i will use 393 family itself
Sagar
but as u saying,so i will use 393 family itself
Sagar
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