My class D amp

opor · 2013-09-17 8:21 pm

Hi Manoj,
What happen with my amp,AUD900? It can not run at fully level. Capacitor 0.47uf at LC filter is burned. I am using BD139s,140s as totem. 2 pairs of IRFP4232 as output fets. TIP31 with 13vzener as bias power.

Regards,
Opor

manojtm · 2013-09-18 9:28 am

Hi Manoj,
What happen with my amp,AUD900? It can not run at fully level. Capacitor 0.47uf at LC filter is burned. I am using BD139s,140s as totem. 2 pairs of IRFP4232 as output fets. TIP31 with 13vzener as bias power.

Hi OPOR,

use 474/400V for +/-85V supply and 474/600V for +/-140V supply(ie:: 4 times higher)

Regards
MANOJ

aman khalsa · 2013-09-19 5:04 am

Can any 1pls share aud900 pcb pls ......

Regards

manojtm · 2013-10-05 6:45 am

Hi,

PCB ready for AUD1000SD😉

Regards
MANOJ

manojtm · 2013-10-28 3:32 pm

Hi All,

waiting MMBT5401/5551 SMD,not completed yet.

sorry for the picture quality(mobile camera)😉

Regards
MANOJ

manojtm · 2013-11-11 11:07 am

Hi All,

3 mistakes found on my PCB after resolved this its working fine.HF clarity so good compare to my single side design(fsw=250KHz). EMI is very less.No noise🙂

attaching my Volume limiter with clip and sig indicator PCB

Regards
MANOJ

ravpreet420 · 2013-11-11 11:55 am

nice work sir........

andrewlebon · 2013-11-15 5:55 am

Hi Manoj
greetings which is your best AUD amp i want to try it feeling bored
warm regards
andrew lebon

manojtm · 2013-11-16 3:29 pm

Hi andrew,

AUD1000SD dual side board is better

I use FDP075N15A_F102 MOSFET with +/-68V supply (max +/-72V)and 22uH coil (T157-2)

Regards
MANOJ

manojtm · 2013-11-16 3:54 pm

Hi,

AUD1000SD working pic..😉

Regards
MANOJ

manojtm · 2013-11-16 4:30 pm

Hi,

ASE(Aud Sound Enhancer) for AUD1000SD😉

Regards
MANOJ

PetruV · 2013-11-16 6:38 pm

What does it do???

manojtm · 2013-11-17 12:37 pm

What does it do???

Hi,
its improve sound quality

Regards
MANOJ

andrewlebon · 2013-11-17 1:55 pm

dual side pcb

AUD1000SD dual side board is better
IRS1500 Dual side pcb stereo

warm regards
andrew lebon

andrewlebon · 2013-11-17 2:00 pm

dual side pcb

AUD1000SD dual side board is better
IRS1500 Dual side pcb stereo

warm regards
andrew lebon

manojtm · 2013-11-18 3:55 pm

Hi Andrew,

AUD1000SD

Balanced IN
Volume Control
Protection:
DC Protect using relay(20A,5mS,2.7V sense)
Over Current +&- Rails
Thermal switch NC type
SUPPLY
35A Bridge Diode
2X 10000uF/80V
and Bias Supply

Only we need 50V-0V-50V AC 10A & 0V-12V AC 1A Transformer.

we can easily add limiter for AUD1000SD

Regards
MANOJ

Deleted member 148505 · 2013-11-22 1:37 am

Congrats Manoj! That looks very good...

manojtm · 2013-11-25 8:37 am

Congrats Manoj! That looks very good...

Hi Jlester,

Thank you for the comment.

I am using 150V 130A MOSFET (MAx Supply Rail +/-72V)

For 2R Load OC sense 1K5 resistor to change For 34A

Now My AUD1000SD OC is 28.7A
Supply Rail +/-72V
Supply Rail for Max. Volume +/-68.6V
FTC RMS @4R 1176W
OC for 4R Load is 17A If i use 2R Load @MID Volume no problem increase this level OC active and it will trip
I check all levels like short SP line,max Volume point on 2Hr. and remove earth wire on signal input @ max volume point,touch TL071 osc point...etc My MOSFET is survive no issues, No heat
It is Better for All

Regards
MANOJ

manojtm · 2013-12-24 7:45 am

Hi All,

WISH U ALL MERRY X'MAS

Regards
MANOJ

sandeep kayarkar · 2014-01-30 10:42 am

My AUD600

Just waiting for some parts

My class D amp

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