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GB: Round #5; Fo-Felix AC Filter
GB: Round #5; Fo-Felix AC Filter
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Old 25th June 2019, 08:18 PM   #1
Destroyer OS is offline Destroyer OS  United States
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GB: Round #5; Fo-Felix AC Filter
Default GB: Round #5; Fo-Felix AC Filter

**We're on round #5!!!**


Quote:
So over the years people have asked about the old version, made by someone else.

It's probably time for an updated one. This one is a bit different. You may notice it does not have following capacitors after the choke. I have tried both ways, and my preference is strongly without the following X2 capacitors. Also the capacitors prior to the choke are not varied in size because overall capacitance is more important - and they won't randomly resonate with each other.

The other major change is the addition of bypass resistors for the chokes. These don't ruin the filtration, but they do a good job of quieting the chokes that can get excited by different combinations of things on the mains.

Click the image to open in full size.

Gen1 w/comoco's
Click the image to open in full size.

Here's how it is different in settling time from the original.
Click the image to open in full size.

Here's a comparison between resonances.
Click the image to open in full size.

Quote:
*2oz copper PCB (1oz is standard)
*Weco 983ZD terminals, copper alloy and can accept 2 wires for daisy chain. These are also safer, particularly if you use solid core wire that otherwise likes to make cold solder joints you can't see.
*X2 rated capacitors for safety, 4x 0.47uf. They are alternated for CFC (capacitor field cancellation).
*Discharge resistor for X2 capacitors
*Coilcraft Comoco choke w/fuse or Bourns 8120/8121-RC choke w/o fuse & 15/16A/20A(*) max sockets
*Fuse clips are beryllium copper (good for 30A)
*120/230v operation (parts & pcb)
*Mounting holes are sized to work nicely with M3 screws and standoff kits
*Size: 2.25x4.25in
The Weco 983ZD are preferred terminals, but not always available as individual sale. For this reason I'm going to include them in the price of PCB, so that I can meet min order requirements for them and save everyone the shipping.

Price: $13ea ($9 per filter board same as original, $2 per Weco, 2 needed per board)

Shipping: $8 US, priority USPS box
$15 CAD
$16 General international padded envelope
If ordering over 4x boards there may be an additional $10, depending on destination.

Need 32 filter board commitments to order.

Quote:
C 5x
wealas 6x
Danny23 12x
wmchugh 6x
tommylck 8x
astromo 6x
Dadbeh 4x
mirek84 6x
ravid 2x

Last edited by Destroyer OS; 10th July 2019 at 05:26 AM.
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Old 25th June 2019, 08:41 PM   #2
Danny23 is offline Danny23  United States
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Location: Cincinnati
Sign me up for 12x please!
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Old 25th June 2019, 09:09 PM   #3
wealas is offline wealas
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Sign me up for 6 boards, please.
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Old 30th June 2019, 02:23 PM   #4
wmchugh is offline wmchugh  United States
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Is this still open? Sign me up for 6 please if it is
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Old 4th July 2019, 09:40 PM   #5
Destroyer OS is offline Destroyer OS  United States
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GB: Round #5; Fo-Felix AC Filter
Until 32, yes it's open. I also have extras after a GB complete. The GB numbers are required to get the good connectors.
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Old 5th July 2019, 06:00 PM   #6
tommylck is offline tommylck
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Sign me up for 8 boards, please.
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Old 5th July 2019, 10:10 PM   #7
astromo is offline astromo  Australia
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I'm in for 6 boards please.

Thanks for putting this out there.
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Old 8th July 2019, 02:55 AM   #8
Destroyer OS is offline Destroyer OS  United States
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GB: Round #5; Fo-Felix AC Filter
PM's sent. If anyone else want's in there is always extras.
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Old 8th July 2019, 03:21 AM   #9
Dadbeh is offline Dadbeh  United States
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4 boards please
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Old 8th July 2019, 08:51 PM   #10
Destroyer OS is offline Destroyer OS  United States
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GB: Round #5; Fo-Felix AC Filter
Quote:
Originally Posted by Dadbeh View Post
4 boards please
PM sent.

Anyone who wants boards, just say so
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