Shielding EzTV668 receiver
Sunday October 28th, 2012 by Acinonyx
The soldering side does not need any additional shielding since the PCB has a ground copper pour which protects the components from EMI.
The component side can be shielded using aluminum tape or aluminum foil and glue stick (photo #1). I used a small spring, taken from and old battery case, to achieve electrical connectivity between the foil and the PCB ground. The spring was soldered in such a way that it touches the aluminum tape when the casing is closed.
For extra shielding against EMI from the computer itself, I used a USB extension cord on which I added a proper ferrite bead.
Posted in General, Electronics, HAM Radio
Wednesday March 13th, 2013 at 10:51 PM
[…] dongles ship in leads electrical interference susceptability. It is best to shield them if you can. Acinonyx describes one way to doing this using a single strip of aluminum tape combined with a spring to connect it to […]
Wednesday October 30th, 2013 at 07:16 AM
I would use some conductive braid around the edges instead of the spring because of the spring’s inductance. The two sides of the case with the inductor between then make a resonant circuit with very high q at some frequency, lower than that frequency the L will dominate in terms of conductance, at higher frequencies the C will conduct more/ An alternative is some fairly tightly woven metal braid that makes multiple connections
Sunday January 19th, 2014 at 10:11 AM
[…] interference susceptability. It is best to shield and put ferrites on everythingif you can.Acinonyx describes one way to doing this using a single strip of aluminum tape combined with a spring to connect it […]