Class D Amp with LM566, LM393 and 2XIRF530

[apexaudio]

hi sir mile
share PCB please
i want test your amp again
thanks

This is same circuit, amp must work on old pcb.

 

[suryadi5417]

100nF/100V and two 0R1/2W instead 0R1/5W was add with litle pcb change.

nice pcb, but still can't find the iron powder..... ooooo i,m so frustasion😱

 

[krakow]

For power resistor (2k2/2W - 10r/2W - 0r1/5W) can I use coil resistor ?

 

[apexaudio]

Dear Mile,

Nice to see that you are working on the new PCB. But I still see there's no space for a heatsink on outputs.

When I turn off D200, it will give me a funny noise (like a siren going from high to low frequency) until rail caps discharge. Any suggestions please ?

Thanks

Outputs and heatsink are on botom side of pcb, use speaker protect with NE555.

 

[apexaudio]

For power resistor (2k2/2W - 10r/2W - 0r1/5W) can I use coil resistor ?

You can use any kind of resistors.

 

[de Ocampo]

Sir Mile,

How about these type for the O/C protect, are they suitable for D200?

Regards!

 

[apexaudio]

Sir Mile,

How about these type for the O/C protect, are they suitable for D200?

Regards!

0,033R can be use with IRFB4227, but 0,005R can be use only in O/C protect with LM311 comparator ( D500 O/C circuit ).
Regards

 

[suryadi5417]

at last my D200 is singing.... using coil from computer psu and not hot just warm, i,m HAPPY now... YESSSS 😎

 

[apexaudio]

at last my D200 is singing.... using coil from computer psu and not hot just warm, i,m HAPPY now... YESSSS 😎

Nice work, coil isn't rewind?

 

[krakow]

at last my D200 is singing.... using coil from computer psu and not hot just warm, i,m HAPPY now... YESSSS 😎

Hello,

what is the brand of the 0.47µF and 0.22µF capacitors?
Because my seller don't sell WIMA capacitors.

Scuse my Frenchy English 😀

Thanks

 

[suryadi5417]

Nice work, coil isn't rewind?

yes sir, the coil is not rewind, i have 1mm wire, how many turn should i wrap the core ofthis kind ? Regards.
( sorry, i,m using google translate to wrote)😀

 

[apexaudio]

at last my D200 is singing.... using coil from computer psu and not hot just warm, i,m HAPPY now... YESSSS 😎

What is rail voltage on your amp?

 

[manojtm]

Hi mile,

did you check D200 @75V rail??
is it start(oscillate)@very low signal input without noise???
feedback resistor 4k7 hot???

Regards
MANOJ

 

[apexaudio]

Hi mile,

did you check D200 @75V rail??
is it start(oscillate)@very low signal input without noise???
feedback resistor 4k7 hot???

Regards
MANOJ

This D200 work at +/-80V rail, only 2k2/2W and TIP31C are hot.
It start at very low input signal without any audable noise.
Regards

 

[manojtm]

Hi Mile,

thank you

Regadars
MANOJ

 

[manojtm]

Hi mile,

actually Mackie SRM450 using 4k7/2W series with 47K/0.25W for feedback and it will HOT little @35 degree.

Regards
MANOJ

 

[apexaudio]

Hi mile,

actually Mackie SRM450 using 4k7/2W series with 47K/0.25W for feedback and it will HOT little @35 degree.

Regards
MANOJ

For me over 60 degree is warm and over 90 degree is hot.
Regards

 

[apexaudio]

D200.2

With 3X1k5/1W instead 4k7 and 4k7/2W instead 2k2/2W there will be no heat problem at +/-75V rail 🙂

 

[suryadi5417]

What is rail voltage on your amp?

just for testing i'm using 42v dc. 🙂

 

[suryadi5417]

Hello,

what is the brand of the 0.47µF and 0.22µF capacitors?
Because my seller don't sell WIMA capacitors.

Scuse my Frenchy English 😀

Thanks

my caps 0,47uF and 0,22uF with no brand, i think from china.
Regards
🙂