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Old 28th December 2005, 08:40 PM   #1
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Default LM 3886 bridged

Does someone have a pcb(or at least a schematic) for 2LM 3886 bridged?Something simple not too complicated
10X
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Old 28th December 2005, 08:58 PM   #2
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Default 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......
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Old 29th December 2005, 02:43 AM   #3
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NEVER drive loads bellow 8 Ohms with 3886 bridged !
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Old 29th December 2005, 02:39 PM   #4
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Default 8 ohms

Ive driven loads as low as 3ohms bridged without an issue, just take a lot of thermal and current control work.
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Old 29th December 2005, 06:13 PM   #5
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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).
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Old 9th January 2006, 06:47 PM   #6
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Nobody,not even a schemattic?
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Old 9th January 2006, 06:54 PM   #7
Netlist is offline Netlist  Belgium
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costy_ro
http://www.national.com/appinfo/audi...ation_Note.pdf and this
is the thread you couldn’t find.

/Hugo
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Old 9th January 2006, 06:55 PM   #8
heater is offline heater  Finland
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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.
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Old 9th January 2006, 07:58 PM   #9
Bazukaz is offline Bazukaz  Lithuania
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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.
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Old 10th January 2006, 07:06 PM   #10
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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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