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Class D Switching Power Amplifiers and Power D/A conversion

My class D amp
My class D amp
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Old 7th May 2014, 10:47 AM   #511
yedu is offline yedu  India
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hi Manoj sir, thank you sir for your replay.Oh yes, im from Trivandrum.sir sorry to ask again ,because iam not clear about some sections..

1. Selection of SubWoofer...i meant that, For this amplifier what will be the wattage rating for the Subwoofer. ie below 250w or higher than 250w.
Because iam newbie in selection of subwoofers.

2. For PSu, you mentioned aud600 psu. But its output is +/-75 so how toreduce to +/-45.
sorry for asking again..

Regards
Yedu
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Old 8th May 2014, 07:39 AM   #512
manojtm is offline manojtm  India
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Hi Yedu,

It is 250W @8R load FTC rating
True RMS is 125W @8R load and 250W @4R load
Quote:
2. For PSu, you mentioned aud600 psu. But its output is +/-75 so how toreduce to +/-45.
Use AC 33V-0V-33V Transformer.

Regards
MANOJ
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Old 12th May 2014, 02:51 PM   #513
yedu is offline yedu  India
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Thanks Manoj sir for your replay.
Now I cleared my doubts & am going to build
This amp ... :-)

Regards
YEDU
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Old 24th June 2014, 09:19 AM   #514
manojtm is offline manojtm  India
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New PCB(all SMD) is working good @300KHz FSW no heat and best sound quality.
Test mode
supply--- +/-65V DC
load---- 2.6 Ohm speaker ( 3x 8 Ohm)
without signal fsw=323KHz(323KHz first switch on then it reduced to 302Khz). with signal fsw=297Khz
FET used IRFP250N
start oscillating without signal.

Regards
MANOJ
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Old 24th June 2014, 04:48 PM   #515
khalsa is offline khalsa  India
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please show some picture,s
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Old 24th June 2014, 06:41 PM   #516
luizcpimenta is offline luizcpimenta  Brazil
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Quote:
Originally Posted by khalsa View Post
please show some picture,s
+ schematic
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Old 25th June 2014, 05:20 PM   #517
cleonjr is offline cleonjr  United States
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I am starting a project with the TAS5630 can some one tell me which is a more effeiceint board the shure 2 x 300 Watt 4 Ohm Class D Audio Amplifier Board TAS5630 300W Stereo Power Amp | eBay

board or this one Assembled TAS5630 +OPA1632DR 300W+300W Stereo Class D Audio Power Amp Amplifier Board-in Amplifier from Electronics on Aliexpress.com

I already have the power supply do I need anything else Input Voltage: 100~120V AC, 200~220V AC (Preset 230V)

Output Voltage: 48V DC

Output Current: 7.5A
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Old 26th June 2014, 01:09 PM   #518
manojtm is offline manojtm  India
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Quote:
please show some picture,s
Hi,

i take the video file but i can't attach

changing FB resistor value down to 47K FSW increase to 420KHz.best low band mid and hi not best. I prefer 300KHz b'cause it good for all band.

Regards
MANOJ
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Old 3rd July 2014, 04:21 AM   #519
Hadighorbani is offline Hadighorbani  Iran
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Quote:
Originally Posted by manojtm View Post
Hi all,

Now arrived new AUD1000SD gold plated PCB

PCB 141425A , PCB 141425F is blue mask and immersion gold
and PCB 141425L is green mask and solder.

141425A for AMPLIFIER
141425F for FILTER (use for SUB)
141425L for Volume and Limiter with LED indication

Regards
MANOJ
Hi my friend
good day
what is the price for me?
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Old 3rd July 2014, 05:47 AM   #520
manojtm is offline manojtm  India
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Hi Hadi,

You need only PCBs or Assembled KIT

Regards
MANOJ
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