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Class D Switching Power Amplifiers and Power D/A conversion

ucd 25 watts to 1200 watts using 2 mosfets
ucd 25 watts to 1200 watts using 2 mosfets
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Old 24th November 2012, 05:00 AM   #2941
manojtm is offline manojtm  India
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Hi hadi,

check +12v for realy supply. resistor 2k/5w for +75v supply(34mA current) . you should change with your need.
+35v you need 1k/5w resistor (34mA current).

regards
manoj
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Old 24th November 2012, 05:11 AM   #2942
manojtm is offline manojtm  India
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Quote:
i connect input signal
shild conect to GND
+ signal connect to + input
nothing conrct to - input and it is not connect to GND
right ?
Hi Hadi,

connect - input to GND
signal + input and GND

regards
MANOJ
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Old 24th November 2012, 05:18 AM   #2943
manojtm is offline manojtm  India
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Hi Hadi,

speaker should be 4 or 8 ohms for first setup.

Regards

MANOJ
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Old 24th November 2012, 05:27 AM   #2944
manojtm is offline manojtm  India
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Hi Hadi,
use this site for calculating resistor for your need(supply voltage ie. +35V, for full volume it comes down to near +30v so both you calculate and set the average value)

Ohm's Law Calculators

Regards
MANOJ

Last edited by manojtm; 24th November 2012 at 05:30 AM.
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Old 24th November 2012, 05:42 AM   #2945
Hadighorbani is offline Hadighorbani  Iran
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Default thanks to sir manoj

Quote:
Originally Posted by manojtm View Post
Hi hadi,

check +12v for realy supply. resistor 2k/5w for +75v supply(34mA current) . you should change with your need.
+35v you need 1k/5w resistor (34mA current).

regards
manoj
i use 1k 3w befor
the relay have about10 volt
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Old 24th November 2012, 05:45 AM   #2946
Hadighorbani is offline Hadighorbani  Iran
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Default thanks to sir manoj

Quote:
Originally Posted by manojtm View Post
Hi Hadi,

speaker should be 4 or 8 ohms for first setup.

Regards

MANOJ
it was 16 ohm
this speaker dont burning easey
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Old 24th November 2012, 06:20 AM   #2947
Hadighorbani is offline Hadighorbani  Iran
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Join Date: Jun 2010
Default thanks to sir manoj

Quote:
Originally Posted by manojtm View Post
Hi Hadi,
use this site for calculating resistor for your need(supply voltage ie. +35V, for full volume it comes down to near +30v so both you calculate and set the average value)

Ohm's Law Calculators

Regards
MANOJ
thanks dear friend
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Old 24th November 2012, 02:37 PM   #2948
manojtm is offline manojtm  India
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Hi Hadi,
Check 6v rail also(+6&-6)
Regards
MANOJ
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Old 24th November 2012, 05:13 PM   #2949
stewin is offline stewin  Kenya
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hi manoj GOD bless your kind spirit keep it up
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Old 25th November 2012, 06:46 AM   #2950
Hadighorbani is offline Hadighorbani  Iran
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Quote:
Originally Posted by manojtm View Post
Hi Hadi,
Check 6v rail also(+6&-6)
Regards
MANOJ
HI sir manoj
what is your perspective?
in bias between - and + leg we have 11.75 VDC
are you speak about bias or LM7806 ?
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