|
Gday Acropolite
I would have to disagree on how easy it is to kill off the RFI from the switchmode "plugpacks". Also, the cheap plugpacks put out these days really dont have any RFI/HF ripple suppression in them.
The ones i have all show high freq artifacts in the output,
but you gets what you pays for.
I have tried shielding etc, but nothing saves me when using these units.
Its the leads from the pack to the device being powered that just radiate away. I have tried several forms of suppression beading, but nothing helps.
Better to just get a transformer style pack.
Note, The same effect is also present with ANY pwm dewheaters.
( Just detune an AM radio and put it near yr heater when running )
Whichever of the cables going to the heater is chopped, produces RFI.
If you have a nichrome wire heater, it also acts as a Radiator.
As i mentioned, this doesnt/hasnt affected my scope to date,
but it does screw up other things ( like cameras ), esp if the cables are run in parallel.
Andrew
|