ucd 25 watts to 1200 watts using 2 mosfets - Page 295 - diyAudio
 ucd 25 watts to 1200 watts using 2 mosfets
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 Class D Switching Power Amplifiers and Power D/A conversion

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 24th November 2012, 05:00 AM #2941 diyAudio Member     Join Date: Aug 2008 Location: KERALA 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
diyAudio Member

Join Date: Aug 2008
Location: KERALA
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 ?

connect - input to GND
signal + input and GND

regards
MANOJ

 24th November 2012, 05:18 AM #2943 diyAudio Member     Join Date: Aug 2008 Location: KERALA Hi Hadi, speaker should be 4 or 8 ohms for first setup. Regards MANOJ
 24th November 2012, 05:27 AM #2944 diyAudio Member     Join Date: Aug 2008 Location: KERALA 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.
diyAudio Member

Join Date: Jun 2010
thanks to sir manoj

Quote:
 Originally Posted by manojtm 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

diyAudio Member

Join Date: Jun 2010
thanks to sir manoj

Quote:
 Originally Posted by manojtm Hi Hadi, speaker should be 4 or 8 ohms for first setup. Regards MANOJ
it was 16 ohm
this speaker dont burning easey

diyAudio Member

Join Date: Jun 2010
thanks to sir manoj

Quote:
 Originally Posted by manojtm 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

 24th November 2012, 02:37 PM #2948 diyAudio Member     Join Date: Aug 2008 Location: KERALA Hi Hadi, Check 6v rail also(+6&-6) Regards MANOJ
 24th November 2012, 05:13 PM #2949 diyAudio Member   Join Date: Jul 2007 hi manoj GOD bless your kind spirit keep it up
diyAudio Member

Join Date: Jun 2010
thanks to sir manoj

Quote:
 Originally Posted by manojtm Hi Hadi, Check 6v rail also(+6&-6) Regards MANOJ
HI sir manoj
in bias between - and + leg we have 11.75 VDC
are you speak about bias or LM7806 ?

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