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-   -   LM 3886 bridged (http://www.diyaudio.com/forums/chip-amps/70611-lm-3886-bridged.html)

costy_ro 28th December 2005 08:40 PM

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

tiltedhalo 28th December 2005 08:58 PM

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......

-_nando-_ 29th December 2005 02:43 AM

NEVER drive loads bellow 8 Ohms with 3886 bridged ! :hot:

tiltedhalo 29th December 2005 02:39 PM

8 ohms
 
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 06:13 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 06:47 PM

Nobody,not even a schemattic?

Netlist 9th January 2006 06:54 PM

costy_ro
http://www.national.com/appinfo/audi...ation_Note.pdf and this
is the thread you couldnít find.

/Hugo :)

heater 9th January 2006 06:55 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 07:58 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 07:06 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


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