my newest CMOY creation
Jun 24, 2003 at 9:46 PM Thread Starter Post #1 of 10

KTpG

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Ok, I know, it is just a CMOY, but I was bored, so why not take an hour and carefully construct a CMOY on a tiny piece of spare proto-board.

It includes:

1000uF per rail (Nichicon VX(M) series)
.0022uF power supply bypass caps
1% generic resistors (100k input, 2.21k+10k gain-- no output load resistor)
.22uF coupling cap
TLE2426CLPR rail splitter
will use: OPA2something, 2x9V in series, yellow LED, 1/8" jacks for in/out (maybe RCA if I decide to keep it)
will be in: Altoids tin

So... just a simple project for the bored person in me.
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It is no masterpiece, I know- it is the product of an hour or so- how could it be? Cute isn't it? LOL
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Jun 24, 2003 at 10:01 PM Post #2 of 10
How does it sound? I should have something similar as soon as my parts get here...
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Jun 24, 2003 at 10:07 PM Post #3 of 10
I really don't know... lol

I have so many caps it is not even funny... and resistors... etc. But I have NO jacks or battery clips. hehe So, right now it doesn't even have power. But, I am fairly certain all my wiring is correct, so all should be well. It is awaiting power, etc. Someday... hehe until then I guess I'll just build more.
 
Jun 25, 2003 at 1:42 AM Post #5 of 10
Quote:

Originally posted by MisterX
Does anybody else see what wrong with the "amp" in the picture?
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No actual amp!
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Jun 25, 2003 at 2:19 AM Post #6 of 10
Quote:

Originally posted by ADS
No actual amp!
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Na, that's the reason for the quotation marks....check the way the resistors are laid out.
Either the normal copper traces are cut and rerouted or......
 
Jun 25, 2003 at 2:30 AM Post #7 of 10
Quote:

Originally posted by MisterX
Na, that's the reason for the quotation marks....check the way the resistors are laid out.
Either the normal copper traces are cut and rerouted or......


I see it!
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Jun 25, 2003 at 3:10 AM Post #8 of 10
I hope you mean they are wrong according to Tangent's layout... I didn't use his. I just made up my own as I went along (as is customary). As far as I know... they are connected correctly. Notice, too, the opamp is facing up towards the PS instead of down, also against Tangent's layout.
 
Jun 25, 2003 at 8:00 PM Post #9 of 10
The resistors are in the right spots. Everything works fine.
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I got it in the enclosure- see pic. 2x9V, 1/8" in and out, SPST switch, yellow LED, OPA2132P, silver solder and all the other stuff I mentioned before in the first post.
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Sounds darn decent. Not great, but decent. Perhaps it is time to build a newer, better amp.
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The image is bad quality, and I never worked for neatness... hehe you should see my handwriting. I am not a neat person (except for appearance).
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Jun 26, 2003 at 7:13 AM Post #10 of 10
Nice little amp.
Glad to see I lived up to my not know anything persona.
The polarity of the PSU caps gave away the fact that your layout was backwards and upside down.
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