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potential smps bluetooth interference?
potential smps bluetooth interference?
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Old 31st October 2017, 11:29 AM   #1
robinlawrie is offline robinlawrie  United Kingdom
diyAudio Member
Join Date: Feb 2008
Default potential smps bluetooth interference?

im building an amp with a built-in bluetooth receiver.

since the case is metal i am hacking on an external antenna.

due to space constraints, i am fairly limited in antenna placement, and it looks like the cable for the antenna will need to run through the part of the case where the smps is located (connexelectronic 800w)

that part of the case has an aluminium wall around it to reduce potential interference with the amp circuitry. bluetooth module is outside that area, in with the rest of the amp bits.

i would -assume- that at 2.4ghz there would not be any noise generated by the smps at a high enough frequency to cause issues, but the antenna coax will be within a couple of cm of the psu,inside the metal shielded area. so what do people think?

thanks, Robin.
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Old 31st October 2017, 01:35 PM   #2
DF96 is offline DF96  England
diyAudio Member
Join Date: May 2007
SMPS vary widely in their EMC performance, so try it and see.
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Old 31st October 2017, 09:48 PM   #3
Chris888 is offline Chris888  United Kingdom
diyAudio Member
Join Date: Sep 2017
Location: Cornwall UK
Bluetooth is pretty resistant to most things. You should be fine, particularly if you are not pushing the boundaries of bluetooth range etc.
Most bluetooth products are packed with interfering SMPS, other transmitters etc etc.
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Old 1st November 2017, 06:10 AM   #4
wwenze is offline wwenze  Singapore
diyAudio Member
Join Date: Mar 2008
The switching frequency of PSU is usually way too low to affect 2.4GHz. A USB3.0 thumbdrive on the other hand...
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