[whiz]

some noob questions....(if i never ask...i'll never learn!)

i want to understand the exact function of the regulators for the
specific project...

1) what does "low dropout" means? (sorry i must learn...

)
2) regulators other than regulation of the voltage...do they filter??)

once again sorry the stupid questions! i know the look like very noob for someone who has a working board like mine...

 

[ozshadow]

For solder bridges, after you clean it, using a pick or razor blade to lightly scratch between joints works wonders to get the ones that are hard to see. Be sure you clean it again after you do this and do not go digging deep.

 

[cetoole]

Thought I had posted this before, turns out headfi logged me out (again) after I hit submit, and I had already gone to a new tab and forgot about it.
Quote:

Originally Posted by whiz some noob questions....(if i never ask...i'll never learn!) i want to understand the exact function of the regulators for the specific project... 1) what does "low dropout" means? (sorry i must learn... )

LDO regs require much less voltage to be dropped across them in order to be able to regulate than standard regulators. The reg101 only have to drop a few hundred mV, instead of a few V for something like a LM317.
Quote:

2) regulators other than regulation of the voltage...do they filter??)

Yup.

 

[whiz]

Thank you cetoole!!!

I was almost sure about that...but i wanted a confirmation!

 

[ssmrsx]

Hi all,

I am just wondering has anyone compare the audio quality btw the Alien DAC and the TI development board? http://focus.ti.com/docs/toolsw/fold...m-pcm2702.html
Which design you would suggest excluding the cost factor?


Thx in advance!!

 

[exphy]

Is there maybe anyone who has a spare board that i could buy?

 

[soloz2]

Quote:

Originally Posted by exphy Is there maybe anyone who has a spare board that i could buy?

get in line buddy

 

[whiz]

heres my alien dac...

sorry i don't have pictures of the board because i forgot to take some...and the board is glued inside the box! i can assure you it's a fine looking little board!

[Click on the photos to see them big]

also sorry for the quality of the pictures!

Alien Dac is my second DIY i hope you like it...

 

[squalle]

Just wanna say my gratitude to Alf that has designed and shipped the boards to me

after being delayed for some weeks, due to work and components lead time. yeah finally I've got my alien DAC working with no hiccup whatsoever!
great design makes it 100% chance to get it working at first instance

 

[n_maher]

Ugh, so pissed! So I sat down this morning to begin working on my 2 DACs only to find that DigiKey shipped me the wrong parts even though the packaging is labeled correctly. Instead of the PCM2702 they sent the PCM1717 which is still a DAC but isn't going to be working in this circuit any time soon

. Looks like I'll be waiting until Monday to call Customer Service and get the part that I paid for.

 

[MASantos]

Quote:

Originally Posted by n_maher Ugh, so pissed! So I sat down this morning to begin working on my 2 DACs only to find that DigiKey shipped me the wrong parts even though the packaging is labeled correctly. Instead of the PCM2702 they sent the PCM1717 which is still a DAC but isn't going to be working in this circuit any time soon . Looks like I'll be waiting until Monday to call Customer Service and get the part that I paid for.

Nate, I have one extra PCM2702, just in case you need it...

 

[ozshadow]

What precautions should you take with this regarding plugging and unplugging things with the power on in this design?

 

[MASantos]

Quote:

Originally Posted by ozshadow What precautions should you take with this regarding plugging and unplugging things with the power on in this design?

I did all possible plugging and unplugging with this DAC and never had a problem, using USB power.

 

[t52]

here are some pictures of the second one i built, this time with a nice wood case

http://t5.xlhost.de/Photos/DIY%20Projects/Alien%20DAC

 

[Alf]

Quote:

Originally Posted by ozshadow What precautions should you take with this regarding plugging and unplugging things with the power on in this design?

This beast is quite resilient. It survived all my cruel experiments and so did my computer. Mind you, I was very resourceful in torturing it.