GB: Round #2; Fo-Felix EMI Filter for AC mains 120/230v; By Folsom

[Destroyer OS]

I may have to launch #3

 

[Vunce]

I’d be in for another pair.

 

[drpro]

Same same

 

[spaceistheplace]

Would you suggest a board for each of the 8 inputs?

 

[Destroyer OS]

You can. I imagine some people will have up to 4 sockets bypassed with no filters.

 

[AmpUtator]

I may have to launch #3

Sounds good. I'm in for two.

 

[shattered_dream]

Hmmmm can somebody measure the drilling dimensions ?
Sitting at work, and don´t have the pcbs with me...

 

[ecclesand]

This may be a stupid question but can these filters be added to a Panamax Power Conditioner? I want to see if these modules work better than the existing filters.

 

[Destroyer OS]

Added? Inside the box?

From what I can see inside their box there isn't room. And their plugs are a little odd, maybe not reusable if you unattach the wires.

It also looks like it has circuitry on the filter board so swapping would probably disable something.

 

[Destroyer OS]

GB #3 is going on now.

 

[AmpUtator]

 

[Skip Pack]

I would like to get 4 boards.

Skip Pack

 

[pinnocchio]

4 boards as well for me

Thanks
Do

 

[Vunce]

Hi Do,

Fo-Felix GB3 is active here:

http://www.diyaudio.com/forums/grou...gb-1-ac-receptacle-enclosure.html#post5486931

 

[pinnocchio]

thanks!

 

[saf]

Jeremy

I need some help here.
I have my first board built and tested it yesterday, seems ok.
I am using the Comoco 4018 on this one.

I know i have some serious fluctuations in noise at my house, but mains is steady 235V.
I am using the Felix on my poweramp and it stoped working tonight.
I went and measure, and despite i have 234V at mains socket, after the Felix i read 221V !!?

I can also read a difference of 5V from Neutral to Ground ( after the Felix). But i read 1.5V from Neutral to Ground at Mains Socket.
What gives ? Something wrong with my comoco or caps ?
Thank you for helping
Cheers

 

[Destroyer OS]

Hi,

Are you using GB #1 or GB #2 boards? Pictures would be very helpful.

Does it measure 221v with the amp plugged in/on, or stand alone without anything but the Fo-Felix plugged in?

Please take more measurements. What is the resistance from one side of the Fo-Felix to the other on L and N? What is the measurement between the input socket L and N to the inputs on the Fo-Felix? The output to the Fo-Felix?

What size transformer on the amp? What class is the amp?

 

[saf]

I have the GB#2 boards

At the mains socket i have 235V AC - between N and L
I have the Felix installed in the powercord so if i plug in this powercord, at the IEC side i read 221V AC - between N and L.

Resistance between AC HOT plug and IEC HOT is 0.00 ohms (the 2 sides of the felix)

Resistance between AC NEUTRAL plug and IEC NEUTRAL is 1.04 Megaohms.

The amp is no issue here, the problem is that it does not turn on because it cant deal with such low voltage.

 

[saf]

Found the problem...i should have dismantled it sooner.

Now...why did the bleed resistor blew up ?
Is it because my amplifier is 400W and draws a lot of current ?

 

[Destroyer OS]

Wow.

There's no fuse... The Comoco only works with a fuse. You were trying to power your amp through a 1/2w resistor.