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Class D Switching Power Amplifiers and Power D/A conversion

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Old 4th March 2013, 06:04 AM   #171
manojtm is offline manojtm  India
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Quote:
Can I use TL074 to replace 072&071?
Hi Raj,

Yes you can use TL074

Regards
MANOJ
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Old 4th March 2013, 10:24 AM   #172
manojtm is offline manojtm  India
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Hi ALL

AUD600 wired for SUB WOOFER RMS1400W@4R

EQ for aud600 wired 100Hz sub filter

Regards
MANOJ
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File Type: jpg AUD600 used for SUB1400W.jpg (848.9 KB, 825 views)
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Old 4th March 2013, 01:21 PM   #173
akraj is offline akraj  Bangladesh
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Quote:
Originally Posted by manojtm View Post
Hi ALL

AUD600 wired for SUB WOOFER RMS1400W@4R

EQ for aud600 wired 100Hz sub filter

Regards
MANOJ
Hi Manoj:

What would be the max output voltage at speaker line from AUD600? If given max rail voltage?

Thanks
Raj
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Old 4th March 2013, 03:30 PM   #174
manojtm is offline manojtm  India
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Quote:
What would be the max output voltage at speaker line from AUD600? If given max rail voltage?
Hi Raj,

i didn't check the speaker voltage,before filter its shows 16.2Vpp(supply +/-75V) square wave on DSO with 10x probe.

Regards
MANOJ
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Old 6th March 2013, 11:32 AM   #175
manojtm is offline manojtm  India
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Hi Raj,

Transfomer AC Voltage is 53.1V and DC supply rail +/-71.5V current 10A volume level is up to clip indicator blinking point; check speaker voltage @27VAC. Clip indicator steady and bright point; speaker voltage @31.6VAC {speaker point connected 5R 50W resistor and it is too hot and burning smell coming tested @5min.}
from this you can calculate the out put watt

@27V AC means 27pp = 729W RMS @ clip point
@31.6V = 998W RMS

Regards
MANOJ

Last edited by manojtm; 6th March 2013 at 11:41 AM.
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Old 6th March 2013, 01:14 PM   #176
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Default Class D amplifier with high performance and crystal oscillator

Good morning everyone.
My contribution to the forum.
Have ridden with separate PCBs (clock / PWM audio input, power and protection).
I am now making a single PCB to finalize the project.
OK testing and operation.
Regards to all.
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Old 6th March 2013, 01:45 PM   #177
Bigun is offline Bigun  Canada
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Looks interesting luizcpimenta, would be great to see some photos of your pcb when it's ready.
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Old 6th March 2013, 04:54 PM   #178
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Quote:
Originally Posted by luizcpimenta View Post
Good morning everyone.
My contribution to the forum.
Have ridden with separate PCBs (clock / PWM audio input, power and protection).
I am now making a single PCB to finalize the project.
OK testing and operation.
Regards to all.
thanks for the schematic luiz.
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Old 6th March 2013, 09:17 PM   #179
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Originally Posted by Bigun View Post
Looks interesting luizcpimenta, would be great to see some photos of your pcb when it's ready.
OK.
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Old 7th March 2013, 06:09 AM   #180
manojtm is offline manojtm  India
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Hi luizcpimenta,

this is similar AUD1000C, thanks for new design. i will give you little correction for your design
1. Remove R129(1K5)
2. separate +15v supply for CD4060 for 12MHz switching it will take more current.
3. Re adjust R127 & R128 for PWM signal 3.3V level otherwise your Q103 will damage on long run(+B=75V or more)

Regards
MANOJ
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