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Old 26th February 2010, 10:18 PM   #11
dukep is offline dukep  United States
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Good job, all the needed parts fit well on a small board. And you got it on single sided!

one question Mr Apexaudio,
How does D1 and D2 interact in the circuit??
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Old 26th February 2010, 10:40 PM   #12
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D1 with R5,C5 make turn on/off delay on mute pin 8. D2 protect output tranzistor of reverse voltage.
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Old 28th February 2010, 01:03 PM   #13
dukep is offline dukep  United States
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Would you also need a second diode for output to negative voltage rail?


// by the way, I like the mosfet board you detailed in another thread.
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Old 28th February 2010, 01:34 PM   #14
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Quote:
Originally Posted by dukep View Post
Would you also need a second diode for output to negative voltage rail?


// by the way, I like the mosfet board you detailed in another thread.
Negativ inverse overvoltage is no critical becouse LM3886 have unsimetry internal circuit.
I like mosfet board too, it is small, compact and easy to montage on heatsink. I hope is usufull for someone. It was workinhorse for me longtime before replaced with new design.
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Old 2nd March 2010, 03:47 PM   #15
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Part List:
R1,R3-1k
R2-100k
R4-15k
R5-10k
R6-4R7 1W

C1,C8-220nF/63V MKS
C2,C3-680pF
C4-10uF/16V
C5-100uF/25V
C6,C7-1uF/63V MKS

D1-ZF16V
D2-1N4004

IC1-LM3886T,TF
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Old 9th March 2010, 05:20 AM   #16
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Default PCB for power supply

Hi jerryo,

This is for you
Attached Files
File Type: pdf SOLDER_SIDE.pdf (12.3 KB, 1953 views)
File Type: pdf COMP_SIDE.pdf (12.0 KB, 1609 views)
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Old 9th March 2010, 05:30 AM   #17
jerryo is offline jerryo  Isle of Man
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Hi AUDISOUL,
thankyou for the pdf's of your power supply board. Very good of you and most helpful.
Cheers
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Old 9th March 2010, 04:08 PM   #18
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Default Ulaz?

Quote:
Originally Posted by apexaudio View Post
Very small PCB based on Yorkville Amps.
Hi!

I'm kinda new here, so forgive me if this question is too obvious...

I'd like to ask, what exactly is the "ULAZ" that can be seen on the second image?

I'll be building this amp this week, and I'm curious to know what that is.

Cheers!

Erik
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Old 9th March 2010, 04:52 PM   #19
davidcb is offline davidcb  United States
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Ulaz translates to input. It is the input connector. Kind of looks like an XLR connector to me.

David.
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Old 10th March 2010, 03:08 PM   #20
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Quote:
Originally Posted by erikyuki View Post
Hi!

I'm kinda new here, so forgive me if this question is too obvious...

I'd like to ask, what exactly is the "ULAZ" that can be seen on the second image?

I'll be building this amp this week, and I'm curious to know what that is.

Cheers!

Erik
This circuit help you.
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File Type: jpg APEX LM3886.jpg (187.5 KB, 3912 views)
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