Author Topic: USB Noise filtering  (Read 1775 times)

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Offline SythenTopic starter

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USB Noise filtering
« on: October 03, 2013, 03:23:15 am »
Morning all!

Me and a friend are working on an SDR project around the RTL-SDR Dongles, and we have come up with a possible method of filtering noise from the 5V line, but we are in dispute around what capacitor/s to use to do the job.

Here is the board we came up with to do the job, its main intention was to distribute power to 2 devices at the same time from one USB port, but as we were coming up with the design, we decided to add filtering.

The intention was to use a 10uF Electrolytic Cap.

Any insight into what caps to use, or if the design needs tweaking would be greatly appreciated.


Copies of the design files are available if you want a copy.

Thanks!
« Last Edit: October 03, 2013, 03:26:59 am by Sythen »
 

Offline jorisbeurden

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Re: USB Noise filtering
« Reply #1 on: October 03, 2013, 08:37:56 am »
Do you only want to use the USB connection as a voltage source or is the PCB also required to transport data?
 

Offline SythenTopic starter

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Re: USB Noise filtering
« Reply #2 on: October 03, 2013, 09:40:45 am »
@jorisbeurden: The board will carry data, but only to one device, it will however be providing power to more than 1 device.

@mojo-chan: Yeah, that was another option we are looking at right now, its likely that ill add that feature in on a later revision of the board.
 


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