Re: Line Noise Interference Question

[nobody@xxxxxxxxxxxx (Dave Houston)]

The ACT filter he's using is a 30:1 bandstop filter. It blocks the passage
of 29/30 of the signal, preventing it from getting sucked down the drain.
Since only 1/30 of the signal gets through the filter, adding another filter
will only help ACT's bottom line.

OTOH, when the problem is noise, adding a second filter may sometimes be
necessary. It depends on the efficiency of the filter.

It's unfortunate that ACT uses the term "attenuate" in their description of
the filter's action since, in this case, it actually prevents attenuation of
the signal.

"BruceR" <brNOSPAM@xxxxxxxxxx> wrote:

>You may be right. Doesn't hurt to try though. I've heard it sometimes
>works but have never needed to try it. Sorry my last post was redundant
>to what you had already said. Should have read through the thread first.
>
>From:Dave Houston
>nobody@xxxxxxxxxxxx
>
>> I don't see how doubling up on filters will do anything in this case.
>> It's not noise.
>>
>> "BruceR" <brNOSPAM@xxxxxxxxxx> wrote:
>>
>>> Two things to try:  Double up the filters, thatis plug one filter
>>> into another and see if that helps. If not, an isolation transformer
>>> should do the trick or you can try a different power supply in the
>>> PC.
>>>
>>> From:Dimbo Spams
>>> cuervojose(remove)@jps.net
>>>
>>>> I use X-10 controllers all over my house. Please no X-10 tirades
>>>> here. I bought a new computer. I am having interference with the
>>>> signals now to my X-10 devices. I have installed a line filter from
>>>> "smarthome" that is supposed to filter out interference from power
>>>> supplies. However, it does not seem to be working. In fact, I must
>>>> not only shut down the new computer, but unplug it also in order for
>>>> it to not interfere. Any one have any suggestions her. Thanks in
>>>> advance!
>>>> --
>>>> Joe
>