You have to be REALLY careful when trying to "daisy chain" various types of filters. It is possible to "de-tune" the filter action that each unit was designed to perform with. This is due to inter-action between the two units and the various impedances that they present to the AC. This can change hinge frequencies, slope rates, etc... and basically give you something that is nothing like what one thinks they are getting. Instead of getting the best of both worlds, you end up with one world that is a mess.
As a side note, the DeZorel looks to be some type of low pass filter with a stepped rate of attenuation. I am basing this on the information provided by them on their website or a website of someone that sells their products. Going by that, i would say that it has the potential to limit current and that is why they've included a breaker of some type. Otherwise, if you tried to pull too much current, it would damage the filter circuit itself. That is exactly what the breaker is meant to stop. The least that i would expect in such a situation is that distortion byproducts would be introduced into the AC as the saturation point of the internal components are neared. Obviously, this isn't good either. As such, until i can find out something different from what i've already been shown, i would recommend using the same precaution that i've said to use with all other AC filtration devices. That is, limit the total current draw to somewhere between 60% - 70% of the what the unit is rated for and you should be plenty safe.
I don't see a problem with using these in the manner that Lak is i.e. with an iso transformer at the breaker box and the filter placed near the components. While the isolation transformer already has "low pass circuitry" built into it, this design may actually help reduce noise even further. Side effects shouldn't be a big deal since the DeZorel doesn't seem to start filtering until appr 5 KHz and above, which is far enough above the AC fundamental to not really get in the way. Just make sure that what you hook up doesn't pull too hard on either the DeZorel or the Iso transformer.
As to Sutts question, i don't think that i would try hooking the newer Tice Power Block units in series with a DeZorel. My thoughts are that these units would inter-act with each other and probably do so in a negative way. You can always try it and see what you get, but my guess is, the results may not be what you want. Sean
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As a side note, the DeZorel looks to be some type of low pass filter with a stepped rate of attenuation. I am basing this on the information provided by them on their website or a website of someone that sells their products. Going by that, i would say that it has the potential to limit current and that is why they've included a breaker of some type. Otherwise, if you tried to pull too much current, it would damage the filter circuit itself. That is exactly what the breaker is meant to stop. The least that i would expect in such a situation is that distortion byproducts would be introduced into the AC as the saturation point of the internal components are neared. Obviously, this isn't good either. As such, until i can find out something different from what i've already been shown, i would recommend using the same precaution that i've said to use with all other AC filtration devices. That is, limit the total current draw to somewhere between 60% - 70% of the what the unit is rated for and you should be plenty safe.
I don't see a problem with using these in the manner that Lak is i.e. with an iso transformer at the breaker box and the filter placed near the components. While the isolation transformer already has "low pass circuitry" built into it, this design may actually help reduce noise even further. Side effects shouldn't be a big deal since the DeZorel doesn't seem to start filtering until appr 5 KHz and above, which is far enough above the AC fundamental to not really get in the way. Just make sure that what you hook up doesn't pull too hard on either the DeZorel or the Iso transformer.
As to Sutts question, i don't think that i would try hooking the newer Tice Power Block units in series with a DeZorel. My thoughts are that these units would inter-act with each other and probably do so in a negative way. You can always try it and see what you get, but my guess is, the results may not be what you want. Sean
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