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Class D Switching Power Amplifiers and Power D/A conversion

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Old 12th September 2013, 11:23 AM   #481
manojtm is offline manojtm  India
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Hi opor,

You want high fsw @400KHz choose

AUD600 rev 1.1 with resistor 680R, 74HC04,IRFZ540,22uH(T157-2 or Coilcraft coil)supply rail +/-45V

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MANOJ
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Old 17th September 2013, 07:13 PM   #482
opor is offline opor  Thailand
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Hi Manoj,
What happen with my amp ,AUD900? It can not run at fully level. Capacitor 0.4uf at LC filter is burned. I am using BD139,140 as totem and TIP31 with 13V zener as bias power. 2 pairs of IRFP4232 as output fets.
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Opor
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Old 17th September 2013, 07:21 PM   #483
opor is offline opor  Thailand
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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.

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Opor
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Old 18th September 2013, 08:28 AM   #484
manojtm is offline manojtm  India
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Quote:
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
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Old 19th September 2013, 04:04 AM   #485
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Can any 1pls share aud900 pcb pls ......

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Old 5th October 2013, 05:45 AM   #486
manojtm is offline manojtm  India
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Hi,

PCB ready for AUD1000SD

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MANOJ
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Old 28th October 2013, 03:32 PM   #487
manojtm is offline manojtm  India
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Hi All,

waiting MMBT5401/5551 SMD,not completed yet.

sorry for the picture quality(mobile camera)

Regards
MANOJ
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Old 11th November 2013, 10:07 AM   #488
manojtm is offline manojtm  India
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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
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File Type: jpg SD FOR LIMIT-TOP.JPG (634.4 KB, 340 views)
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Old 11th November 2013, 10:55 AM   #489
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nice work sir........
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Old 15th November 2013, 04:55 AM   #490
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Hi Manoj
greetings which is your best AUD amp i want to try it feeling bored
warm regards
andrew lebon
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