S
siliconmike
- Jan 1, 1970
- 0
I'm building a small device that
- runs on a 9V battery
- includes 9V to 4.5V voltage splitter IC running at few hundred
kiloherts
- includes 8 MHz microcontroller with in-built oscillator, operating on
4.5V
- The microcontroller uses PWM to control intensity of 4 LEDs connected
to its port pins.
Thats about it, the device has 4 LEDs that dance at varied intensity.
Well, this device would be submitted for EMC testing as per CE
requirements.
I would appreciate advise and comments on whether this low voltage
device would pose a EMC failure risk, or whether there is absolutely no
risk.
I would also be greatful for advise on how to minimize risk of EMC
failure.
There are 2 pcbs between which the battery is sandwiched. The top PCB
has 4 LEDs. The bottom PCB has the electronics. The pcbs are connected
with perpendicular wires.
| | | | leds
----------------- top pcb
[ ] battery
----------------- bottom pcb
Thanks,
Mike
- runs on a 9V battery
- includes 9V to 4.5V voltage splitter IC running at few hundred
kiloherts
- includes 8 MHz microcontroller with in-built oscillator, operating on
4.5V
- The microcontroller uses PWM to control intensity of 4 LEDs connected
to its port pins.
Thats about it, the device has 4 LEDs that dance at varied intensity.
Well, this device would be submitted for EMC testing as per CE
requirements.
I would appreciate advise and comments on whether this low voltage
device would pose a EMC failure risk, or whether there is absolutely no
risk.
I would also be greatful for advise on how to minimize risk of EMC
failure.
There are 2 pcbs between which the battery is sandwiched. The top PCB
has 4 LEDs. The bottom PCB has the electronics. The pcbs are connected
with perpendicular wires.
| | | | leds
----------------- top pcb
[ ] battery
----------------- bottom pcb
Thanks,
Mike