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Chip Amps Amplifiers based on integrated circuits

LM1875 layout
LM1875 layout
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Old 4th December 2017, 07:19 PM   #21
wintermute is offline wintermute  Australia
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LM1875 layout
Originally Posted by PRR View Post
Has been for 30+ years.

They have a roll of shrink tube with a "- - - - -" stripe to mark the negative leg. Often with a fat stripe so a wrong-way cap will stand-out on quick inspection of board.

I do not know why draftsmen mark "+" and cap makers mark "-". But we should be able to figure it out.
I think Nigel was talking about the silkscreen on the first board posted The curved white stripe next to one pin for the electro caps....

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Old 4th December 2017, 07:22 PM   #22
scottjoplin is offline scottjoplin  Wales
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That makes more sense, I thought they were smiley faces
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