LM 3886 bridged

costy_ro · 28th December 2005, 07:40 PM

Does someone have a pcb(or at least a schematic) for 2LM 3886 bridged?Something simple not too complicated
10X

tiltedhalo · 28th December 2005, 07:58 PM

What are you looking for exactly? Are you looking to invert at the chip or use a buffer like a DRV134 for the bridge, what voltage supply ect... theres alot of circuits out there, whats the load your going to be driveing ect......

-_nando-_ · 29th December 2005, 01:43 AM

NEVER drive loads bellow 8 Ohms with 3886 bridged !

tiltedhalo · 29th December 2005, 01:39 PM

Ive driven loads as low as 3ohms bridged without an issue, just take a lot of thermal and current control work.

costy_ro · 29th December 2005, 05:13 PM

First,10x for the replyes.I want to invert the signal at one chip(as in the app notes),the load will be 5,7ohm,the supply voltage is not an issue(i`ll have one ordered as i need,i think +/-30V would be good enough-correct me if i`m wrong).

costy_ro · 9th January 2006, 05:47 PM

Nobody,not even a schemattic?

Netlist · 9th January 2006, 05:54 PM

costy_ro
http://www.national.com/appinfo/audi...ation_Note.pdf and this
is the thread you couldn’t find.

/Hugo

heater · 9th January 2006, 05:55 PM

OK How abot this one:

http://david.lewander.com/projects/amp/amp.htm

100 watss into 8 or 4 ohms depending on power supply voltages.

Bazukaz · 9th January 2006, 06:58 PM

I think it should deliver 140 W RMS into 8 ohms with proper supply voltages and large heatsink. I usually use a large aluminium sheet , at least 5 mm thick, it works well.

costy_ro · 10th January 2006, 06:06 PM

I was hoping to get about 120W into 8ohms with +/-30V.
Is it realy that necessary to have a 8ohm load?I`ll probably have a 6 ohm load

28th December 2005, 07:40 PM	#1
costy_ro diyAudio Member Join Date: Dec 2005 Location: slatina	LM 3886 bridged Does someone have a pcb(or at least a schematic) for 2LM 3886 bridged?Something simple not too complicated 10X __________________ Bass maniac

28th December 2005, 07:58 PM	#2
tiltedhalo diyAudio Member Join Date: Sep 2005 Location: Melbourne Florida	LM3886 bridged?? What are you looking for exactly? Are you looking to invert at the chip or use a buffer like a DRV134 for the bridge, what voltage supply ect... theres alot of circuits out there, whats the load your going to be driveing ect......

29th December 2005, 01:39 PM	#4
tiltedhalo diyAudio Member Join Date: Sep 2005 Location: Melbourne Florida	8 ohms Ive driven loads as low as 3ohms bridged without an issue, just take a lot of thermal and current control work.

29th December 2005, 05:13 PM	#5
costy_ro diyAudio Member Join Date: Dec 2005 Location: slatina	First,10x for the replyes.I want to invert the signal at one chip(as in the app notes),the load will be 5,7ohm,the supply voltage is not an issue(i`ll have one ordered as i need,i think +/-30V would be good enough-correct me if i`m wrong). __________________ Bass maniac

9th January 2006, 05:47 PM	#6
costy_ro diyAudio Member Join Date: Dec 2005 Location: slatina	Nobody,not even a schemattic? __________________ Bass maniac


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29th December 2005, 01:43 AM	#3
-_nando-_ diyAudio Member Join Date: Dec 2005 Location: Sao Paulo	NEVER drive loads bellow 8 Ohms with 3886 bridged !

9th January 2006, 05:54 PM	#7
Netlist diyAudio Moderator Emeritus Join Date: Jan 2003	costy_ro http://www.national.com/appinfo/audi...ation_Note.pdf and this is the thread you couldn’t find. /Hugo

9th January 2006, 05:55 PM	#8
heater diyAudio Member Join Date: Jul 2004 Location: Helsinki	OK How abot this one: http://david.lewander.com/projects/amp/amp.htm 100 watss into 8 or 4 ohms depending on power supply voltages. __________________ For me the past is not over yet.

9th January 2006, 06:58 PM	#9
Bazukaz diyAudio Member Join Date: Nov 2005 Location: Vilnius	I think it should deliver 140 W RMS into 8 ohms with proper supply voltages and large heatsink. I usually use a large aluminium sheet , at least 5 mm thick, it works well.

10th January 2006, 06:06 PM	#10
costy_ro diyAudio Member Join Date: Dec 2005 Location: slatina	I was hoping to get about 120W into 8ohms with +/-30V. Is it realy that necessary to have a 8ohm load?I`ll probably have a 6 ohm load __________________ Bass maniac

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