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