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[Show Off] your Cmoy

post #1 of 10
7/27/11 at 5:21pm
Thread Starter 

Here is mine:

 

Cmoy1.jpg

 

 

Cmoy3.JPG

Cmoy2.jpg

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post #2 of 10
7/27/11 at 9:03pm

Here's one of mine...

 

LT1364.1.jpg

 

It replaces the previous version in this case...

 

LT1364.jpg

 

Battery pack is an eight cell, AA NiHM.

TLE2426 and LT1364/LT1363

Dual color LED for battery level.

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post #3 of 10
7/28/11 at 12:59am

Mine :)

IMG_1782.jpg

 

another one.

IMG_1818.jpg

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post #4 of 10
7/28/11 at 7:45am
Quote:
Originally Posted by Avro_Arrow View Post

Here's one of mine...

 

LT1364.1.jpg

 


Very clean execution, Avro.

 

It looks like you could have shifted some of the components over to the side above the text to shorten the board?

 

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post #5 of 10
7/28/11 at 7:50am

Here's my unfinished $3 CMoy I just need the opamp and rail splitter to complete the circuit... this project has been shelved away for another day.

 

4fc92259_P6163027.jpg

8ef23519_P6243055.JPG

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post #6 of 10
7/28/11 at 7:54am

I could have, but there was no functional reason to do so. There is plenty of room between the back of the board and the battery pack.

Also, area that looks like wasted space now is room for an on board charger later...
 

Quote:
Originally Posted by zammykoo View Post




Very clean execution, Avro.

 

It looks like you could have shifted some of the components over to the side above the text to shorten the board?

 



 

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post #7 of 10
8/8/11 at 2:12am
Thread Starter 

Anyone else care to show their build?

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post #8 of 10
8/8/11 at 11:38am

My first DIY amp

not really a Cmoy

and by mistake i took 1K resistors instead of 100k, so the input filter is shorted

also, need to check dc output voltage, multimeter should arrive soon

except that seems to work.

tested with sony x10 mini and grado sr80

its quite noisy on low input volume. wonder if its the source's fault since there is no noise if i just short all the inputs to the ground

IMG_20110807_190925.jpg

 

ground circuit: 2x220k resistors + opamp

L/R channels: in -> LPF -> opamp as buffer -> opamp as x5 amp ->out (2 dual opamps, 1 for each channel)

 


Edited by Costia - 8/8/11 at 11:39am
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post #9 of 10
8/9/11 at 4:05am

Do need a lot of electronics experience to build these? I have a soddering iron but no experience at all with circuits 

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post #10 of 10
8/9/11 at 5:19am

These little projects are inexpensive and a great way to get experience.

There are some great tutorials to get you started as well.

 

Tangents tutorial



Fred_Fred tutorial

 

 

Quote:
Originally Posted by CheesusCrust View Post

Do need a lot of electronics experience to build these? I have a soddering iron but no experience at all with circuits 



 

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