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Chip Amps Amplifiers based on integrated circuits

Looking for the Circuit drawing of this LM4780 Board
Looking for the Circuit drawing of this LM4780 Board
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Old 6th August 2019, 02:35 PM   #41
rabbitz is offline rabbitz  Australia
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Location: Newcastle, Australia
Originally Posted by Mark Whitney View Post
R13 - 14 should be 2.7 ohms.
Interesting you should note that as I've seen 10R and 2R7 (as per TI datasheet) in this location with a 100nF to make up the zobel. Have no idea if it makes much of a difference as all I've built used 2R7 but the last built module I received has 10R.
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Old 29th September 2019, 04:01 PM   #42
Salar is offline Salar  Germany
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Join Date: Feb 2006
Location: Germany
I have not built the amp yet but I am wondering if the
layout of my board is good and if I should get another PCB...

When you look at my photograph from page 1,

Click the image to open in full size.

Arenīt the inductors of the Thiele Network too close to the inputs (the white connectors in the middle) - and the feedback-resistors (I guess some of the little blue ones) too far away from the LM4780?
All the best,

EDIT: The Image might be squeezed, just click on it to see it in the correct aspect Ratio.

Last edited by Salar; 29th September 2019 at 04:03 PM.
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