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Chipamp IC amp kits & PC boards from ChipAmp

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Old 20th October 2014, 08:13 PM   #1
Philfr is offline Philfr  France
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Default LM3886 dual mono and earth

Hi,
I received well my order from Chipamp !!
I began building :

Click the image to open in full size.

Question about earth connect, I want to make this network, from Rod Elliot :

[IMG]Copyright image removed[/IMG]

If I am right, I must connect "zero volt line" to "chg" on amp pcb ?
Other way for safety loop breaker in dual mono arrangement ?
Thank's.
Phil.
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Old 24th October 2014, 09:08 AM   #2
Mark Whitney is offline Mark Whitney  Netherlands
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This is how I would build it.
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File Type: png tCad1 duo mono amp.png (19.8 KB, 248 views)
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Old 24th October 2014, 01:08 PM   #3
Speedskater is offline Speedskater  United States
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Note that the AC power Safety Ground/Protective Earth connection to the chassis is near the AC power inlet.
The circuit connections to chassis are near the input/output jacks.
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Old 24th October 2014, 01:13 PM   #4
mondogenerator is offline mondogenerator  England
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A small criticism about the heatsinks....they really would convect better if the fins were vertical, particularly inside an enclosure like that which you show.
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Old 24th October 2014, 02:30 PM   #5
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by mondogenerator View Post
A small criticism about the heatsinks....they really would convect better if the fins were vertical, particularly inside an enclosure like that which you show.
Then the slots in the floor can feed air through the heatsinks.

Does the lid have slots to allow the heated air to escape?
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Old 24th October 2014, 06:27 PM   #6
Mooly is offline Mooly  United Kingdom
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LM3886 dual mono and earth
Copyright material removed from post #1

Please read the text at the bottom of this page,
Elliott Sound Products - The Audio Pages (Main Index)
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Old 25th October 2014, 06:55 AM   #7
Philfr is offline Philfr  France
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Hi all,
Thank's for reply..
First, sorry for "Copyright image removed", thank's to Mooly.

Heatsinks : top cover is exactly the same of back cover, so the slots are the same and at the same place.
PS is 17 volts, so the heat is not very high. Foots amp is near 3 cm.

Earthing : thank's Mark, I'll do as your schematic with two loop breaker.

Phil.
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