* First of all , I am sorry about that my english is too bad , hope you can understand what I say >< *
Hello~ I am a student , I am on hoilday now...
I want to make a audio device during my hoilday ...
however , I don't have any PCB or instruction
Do you have any PCB which is suitable for beginner ?
Hello~ I am a student , I am on hoilday now...
I want to make a audio device during my hoilday ...
however , I don't have any PCB or instruction
Do you have any PCB which is suitable for beginner ?
You might want to try making an LM3886 Amp.
They're easy to make, and very nice sounding.
I recommend either buying a www.chipamp.com kit or, if you are an extreme DIY-er, use Russ White's PCB layout: http://www.diyaudio.com/forums/showthread.php?s=&threadid=60642&highlight=
I still need to finnish my first one I started to build!
They're easy to make, and very nice sounding.
I recommend either buying a www.chipamp.com kit or, if you are an extreme DIY-er, use Russ White's PCB layout: http://www.diyaudio.com/forums/showthread.php?s=&threadid=60642&highlight=
I still need to finnish my first one I started to build!
PCB
Hello evo1622, and welcome to the site. You need to say what sort of circuit or PCB you want, you say audio, but do you want to make a simple doorbell or a stereo amplifier? I wish you luck and I hope you find what you want. Your English is very good I have tried to learn a different language but I could not do it, well done.
ahrsix
Hello evo1622, and welcome to the site. You need to say what sort of circuit or PCB you want, you say audio, but do you want to make a simple doorbell or a stereo amplifier? I wish you luck and I hope you find what you want. Your English is very good I have tried to learn a different language but I could not do it, well done.
ahrsix
I might aswell point out that there are chipamp circuits out there that are simple enough not to need a PCB.
One i built a while back for instance, sounds ok, enough power to drive pretty much anything, uses cheap and readily available parts, and best of all its simple! http://www.oselectronics.com/downloads/TDA1554Q_CNV_2.pdf
I used the schematic in the datasheet for a stereo amplifier but changed the input caps for 1uF cap's anything between 1uF and 10uF works well as input caps on this amp.. there is a noticable difference useing lower values than this..
I havent tried anything above 10uF. i tried 10uF non polar electros but liked the sound these 1uF polypropelyne caps give better so i am sticking with them.. it is nice and simple and deffinatley dosnt need a PCB..
Runs quite happily on a little 12V SLA battery or i am useing a small 100VA toroid which is giving me about 18V after rectifier and a single 4700uF filter cap bypased with another 1uF cap and it is perfectly happy running from that aswell..
Hope this is of some help,
Owen
One i built a while back for instance, sounds ok, enough power to drive pretty much anything, uses cheap and readily available parts, and best of all its simple! http://www.oselectronics.com/downloads/TDA1554Q_CNV_2.pdf
I used the schematic in the datasheet for a stereo amplifier but changed the input caps for 1uF cap's anything between 1uF and 10uF works well as input caps on this amp.. there is a noticable difference useing lower values than this..
I havent tried anything above 10uF. i tried 10uF non polar electros but liked the sound these 1uF polypropelyne caps give better so i am sticking with them..
it is nice and simple and deffinatley dosnt need a PCB.. Runs quite happily on a little 12V SLA battery or i am useing a small 100VA toroid which is giving me about 18V after rectifier and a single 4700uF filter cap bypased with another 1uF cap and it is perfectly happy running from that aswell..
Hope this is of some help,
Owen
davidlzimmer said:
Sure, a battery could be used, but if you think you can be careful with AC primaries and secondaries, I say go ahead and try a transformer with a bridge rectifier and some smoothing capacitors.
Just wire that up like it says on www.chipamp.com 's website - the snubberized power supply.
AC to DC: AC Transformer secondaries to Bridge rectifier to Smoothing capacitors to DC
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