Free IPod Amps & Parts (non-CMoy)

by erckgillis

27K5439

Intro: Free IPod Amps & Parts (non-CMoy)

A quick intro to those who are still working (like me) with tangent or CMoy amps and have SMD or Pins on small parts to solder... I have Young-Onset Parkinsons Disease (Michael J. Fox, Muhammad Ali etc. etc.) so my hands are not as steady as they used to be...do not BUILD...when you can Mooch...

These EVM (evaluation modules) are built and designed for testing by huge IC firms... just look around and...'um... sign up...hehe..if you can't get Eval boards get sample parts! OP AMPS and many other components are FREE from the original manufacturer. Some are "alternative" parts and the DIP are usually the cheapest. SMD and SOIC devices tend to NOT come in single qty unless you pay a few dollars.

Easy search tools are online for various OP AMP power requirements, form factor and output ratings. Low voltage power requirements are best for portable iPod versions, however 12v+ power with amps over 10W per channel are available for speaker applications. Build your own iPod boombox or dock with amp & speakers!

http://focus.ti.com/docs/toolsw/folders/print/opamppro.html

Most IC firms have free SAMPLES and/or discounts for quantities of ONE. They usually deal with THOUSANDS of parts on tape reels. It's expensive for them to send you ONE part.,so they built these "testbed" or sandbox modules for customer testing...all pre made and with easy pins for attachment to power and audio inputs/outputs! Search IC makers websites and get free samples! These are NOT for resale and are for testing only...;)

You usually get ONE only...but of each type! Order seperate parts or all together!

Also see tangents excellent DIY amps & improved designs from Chu Moy's/Sijoase. Buy his low cost pre-fab IC boards!

http://tangentsoft.net/audio/cmoy-tutorial/ he has some parts and parts #'s for most distributors

and see the headwize DIY forums for the bleeding edge stuff...! ya way cool.

http://headwize.com/ubb/forumdisplay.php?fnum=3

Links to pictures of Sijoase's amps...was some talkway back of IC board production runs from Sijoase schematics...? hum?

http://headwize.com/ubb/forumdisplay.php?fnum=3

40 Comments

erckgillis 12 years ago

I need to update this soon!

tigerdog330 15 years ago

wait so i just ordered the eval board here: http://focus.ti.com/docs/toolsw/folders/print/opampevm-sot23.html
for free then i was reading the pdf (http://focus.ti.com/lit/ug/slou060b/slou060b.pdf ) and it was a little confusing but from what i can understand, it says you need to get the sample amps separate and put them together yourself? please correct me if im wrong because if i understand correctly then i just ordered another thing i cant use.

erckgillis 14 years ago

yes, you have to assemble many of them yourself...that is why they are cheap or free....try soldering...

tigerdog330 15 years ago

nvm it came in the mail today.. so it turns out its just the board with the circuits printed and you need to add all the parts on your own.

fothic15 15 years ago

I got a bunch of stuff in the mail today but its all teeny, tiny chips. How do I get a board for it???

erckgillis 14 years ago

lol...you have to MAKE them...

warri0r13 14 years ago

Hi, i know it's an old instructible, but i have a question. When i'm registering my TI account, then what to put as my company?

planes891 17 years ago

in that first picture, i cant find that part on ti's website can you post a link? thanks

tigerdog330 15 years ago

wait is this the $49 board here in the picture?

cupnoodles2 15 years ago

Hey do u have schematics for that cmoy u have there? thanks my mail is positiveguy11@yahoo.com

cdubnbird 15 years ago

ok so I'm not nearly as tech-savvy as everyone else. i just want a decent audio amplifier that can fit in an altoids tin and preferably have two headphone ports. i looked at the sites and was thoroughly confused (and half of them didn't even come up). If someone could refer me to a site where i could get an amp for free that'd be super cool?

cdman0025 17 years ago

Where do you reccomend to use or get free eval kits from? Please putllinks

erckgillis 17 years ago

Must use "social engineering". Sorry for a quick link spend the $49. Cheaper than ANY kit you can buy or build for that quality (see photo).
Beg borrow conjole you CAN get free via email, use their cloest competition as reference , cc emails from one to another. Get a price or discount then negotiate....you can do it.... I'm working on a whole EVM SYSTEM...for free!

http://focus.ti.com/docs/toolsw/folders/print/tpabasekitevm.html

Lazy try $5 boards - http://focus.ti.com/docs/toolsw/folders/print/opampevm-sot23.html

littlechef37 15 years ago

I clicked buy with TI E store and I got them for free for some reason.... ?????

pmac93 16 years ago

where else can i sign up for free samples besides ti?
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