RC1 Schematic Error?

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Eno
 
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RC1 Schematic Error?

Post by Eno »

First off, thanks Ladyada for such a great resource and website. I was hoping to postpone my first post until I finished building my WaveBubble, but I have a question.

On your schematic, in the power supply section of the lm2733x right past D1, you mention I should have +6V, but I am reading around +13V

Image

Should it be labeled +13V?

Eno
 
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Joined: Tue Mar 20, 2007 12:46 pm

Post by Eno »

Doing the math for the lmx2733x, R1=120K and R2=12K, which should give us 13.53V, which is what I'm getting. So do I need to change my R1 to get 5V out?

dennis84
 
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Post by dennis84 »

yes, it's somewhere in another post on the forum, i hope you didn't blow up another ic because of that 13V.

Eno
 
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Joined: Tue Mar 20, 2007 12:46 pm

Post by Eno »

dennis84 wrote:yes, it's somewhere in another post on the forum, i hope you didn't blow up another ic because of that 13V.
After searching I see you're right, its R3=36.5K. Thanks

adafruit
 
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Post by adafruit »

ive posted RC1a which fixes this mistake.

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