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Old 28th May 2002, 01:51 AM   #1
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Join Date: Apr 2002
Default shielding driver

The project I'm currently working on uses a simple lm3886 amp circuit. This powers a small horn driver. The horn driver, when installed in the casing, is placed about 1 cm abover the lm3886 circuit board. That is, the magnet of the horn driver is 1 cm abover the circuit. The magnet is only about 4 or 5 cm in diameter. Is this layout , with the magnet so close to the board, going to give me trouble? Should I shield the horn driver from the circuit board? The lm3886 chip itself is about 1 to 2 cm to the side of the magnet attached to the heat sink.

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Old 28th May 2002, 02:23 AM   #2
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Join Date: Feb 2002
Location: Perth, Australia.
Hi blabley,
The magnetic field should not cause misoperation of your amplifier circuit, but it will add a sound flavour to the resultant.
Try it and experiment.

Regards, Eric.
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