Lm3886 PCB's schematic

Mnvizb · 28th December 2011, 07:46 AM

Hello everyone.I've decided to buy PCB's for my gainclone project. I've found a great deal in eBay, but there is no manual or schematic for the PCB. LM3886 Power Amplifier PCB for DIY NEW | eBay Here you can see the offer. Maybe some of you have built this and have at least schematic?

madtecchy · 28th December 2011, 11:47 AM

Hi.
it is a very simple circuit. and with the aid of the data sheet from national semiconductors it wouldnt take long to draw a schematic. for this board

CanAm Man · 28th December 2011, 03:45 PM

If you now decide you need a manual and/or tech data (but don't know where to find it.....), and the vendor didn't supply it--was the purchase of these PCBs really such a good deal? (Deep philosophical question, here....)

Try the Chipamp.com website. I'm certain your final design will be close to the info Brian provides in his data. This should give you enough info to use--and take a look at the LM3886 chip manufacture's tech data, as well.

Good luck......

godfrey · 28th December 2011, 03:54 PM

The advert says an "Assembly drawing" is included. That should have the info you need.

Minion · 28th December 2011, 04:41 PM

Ive bought these PCB"s and they are just Fine ..... The Schematic they give you with the PCB doesn"t exactly match the PCB but it is fairly close , the Schematic they give you is basicly just a copy of the Datasheet Schematic ..... The PSU PCB doesn"t come with a schematic .....

The Supply Bypass caps on the PCB are really small (100uF) and there isn"t really a lot of room to add bigger caps .......

Cheers

Mnvizb · 28th December 2011, 05:21 PM

Thanks. I haven't bought it yet, so it wasn't a bad deal

CharlieLaub · 28th December 2011, 06:02 PM

The LM3886 PCB is fine. The power supply PCB is pretty crappy. Use monolithic bridge rectifier, some large screw terminal caps, and a buss bar for ground.

If you look around you can find an Ebay listing for 10x of the chipamp PCBs.

-Charlie

Mnvizb · 28th December 2011, 08:09 PM

I saw, but i do not intend to make a lot of these amps. I only need 2. Also I have limited funds since I'm underage and still go to school, so you may imagine how much money I've got

28th December 2011, 07:46 AM	#1
Mnvizb diyAudio Member Join Date: Nov 2011	Lm3886 PCB's schematic Hello everyone.I've decided to buy PCB's for my gainclone project. I've found a great deal in eBay, but there is no manual or schematic for the PCB. LM3886 Power Amplifier PCB for DIY NEW \| eBay Here you can see the offer. Maybe some of you have built this and have at least schematic?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
12AX7 + LM3886 schematic	danerius	Chip Amps	21	5th February 2012 10:08 PM
LM3886 parallel PCB's	jmillerdoc	Chip Amps	0	27th May 2009 08:26 PM
LM3886 PCB's or Where is ChipAmp?	DJ4MC	Chip Amps	6	3rd May 2008 02:34 AM
Please Check this LM3886 Schematic	mymindinside	Chip Amps	28	21st August 2007 09:23 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

28th December 2011, 11:47 AM	#2
madtecchy diyAudio Member Join Date: Dec 2010 Location: wigan	Hi. it is a very simple circuit. and with the aid of the data sheet from national semiconductors it wouldnt take long to draw a schematic. for this board

28th December 2011, 03:45 PM	#3
CanAm Man diyAudio Member Join Date: Sep 2006 Location: Colorado Springs, CO	If you now decide you need a manual and/or tech data (but don't know where to find it.....), and the vendor didn't supply it--was the purchase of these PCBs really such a good deal? (Deep philosophical question, here....) Try the Chipamp.com website. I'm certain your final design will be close to the info Brian provides in his data. This should give you enough info to use--and take a look at the LM3886 chip manufacture's tech data, as well. Good luck......

28th December 2011, 03:54 PM	#4
godfrey diyAudio Member Join Date: Nov 2009 Location: Cape Town	The advert says an "Assembly drawing" is included. That should have the info you need.

28th December 2011, 04:41 PM	#5
Minion diyAudio Member Join Date: May 2006	Ive bought these PCB"s and they are just Fine ..... The Schematic they give you with the PCB doesn"t exactly match the PCB but it is fairly close , the Schematic they give you is basicly just a copy of the Datasheet Schematic ..... The PSU PCB doesn"t come with a schematic ..... The Supply Bypass caps on the PCB are really small (100uF) and there isn"t really a lot of room to add bigger caps ....... Cheers

28th December 2011, 05:21 PM	#6
Mnvizb diyAudio Member Join Date: Nov 2011	Thanks. I haven't bought it yet, so it wasn't a bad deal

28th December 2011, 06:02 PM	#7
CharlieLaub diyAudio Member Join Date: Mar 2007 Location: California	The LM3886 PCB is fine. The power supply PCB is pretty crappy. Use monolithic bridge rectifier, some large screw terminal caps, and a buss bar for ground. If you look around you can find an Ebay listing for 10x of the chipamp PCBs. -Charlie

28th December 2011, 08:09 PM	#8
Mnvizb diyAudio Member Join Date: Nov 2011	I saw, but i do not intend to make a lot of these amps. I only need 2. Also I have limited funds since I'm underage and still go to school, so you may imagine how much money I've got

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)