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GB: Round #4; Fo-Felix & GB #1 AC Receptacle Enclosure
GB: Round #4; Fo-Felix & GB #1 AC Receptacle Enclosure
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Old 12th March 2019, 08:21 PM   #1
Destroyer OS is offline Destroyer OS  United States
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Location: PNW
GB: Round #4; Fo-Felix & GB #1 AC Receptacle Enclosure
Default GB: Round #4; Fo-Felix & GB #1 AC Receptacle Enclosure

**We're on round #4!!!**


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.
***** This board will have two holes for options on switching the bypass resistors between Bourn/Comoco.

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:
Blackmani 4
mzbrahce 6
MASantos 4
Myint67 6
leejh 8
drpro 4
MtBiker 6
s610adam 6 (6x LOFI and 6 DSC-1)
Roundtoit 6 (2-LOFI, 1-DCS1 & 1-DCS2)
Pictures of Enclosure:

Click the image to open in full size.

Click the image to open in full size.

If people want I need 10 commitments. We have one to start with. They are $200. They’re really nice, and won’t come with those markings since everyone will do their own combo of filters. They are aluminum, and powder coated.

Last edited by Destroyer OS; Yesterday at 08:19 PM.
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Old 12th March 2019, 08:42 PM   #2
MASantos is offline MASantos  Portugal
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I'm in for 4 boards. Thanks!
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Old 12th March 2019, 10:35 PM   #3
AmpUtator is offline AmpUtator  United States
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GB: Round #4; Fo-Felix & GB #1 AC Receptacle Enclosure
That enclosure looks really nice, and I love those receptacles. What are they? Are they brass or copper with gold plating?
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Old 12th March 2019, 11:12 PM   #4
Destroyer OS is offline Destroyer OS  United States
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GB: Round #4; Fo-Felix & GB #1 AC Receptacle Enclosure
They are Hubbells. They are brass (which is copper and sinc). Pure copper is only available from specialized companies. I am not a fan of super special sockets, they sound different but not actually better.
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Old 12th March 2019, 11:53 PM   #5
Roundtoit is online now Roundtoit  United States
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I'm down for 4 boards. Can I get 2-LOFI, 1-DCS1 & 1-DCS2 as well?
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Old 13th March 2019, 12:18 AM   #6
Destroyer OS is offline Destroyer OS  United States
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Join Date: Nov 2005
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GB: Round #4; Fo-Felix & GB #1 AC Receptacle Enclosure
Yes, of course. Do you want them early? If not just remind me when making payment for the Fo-Felix so I can package everything together.
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Old 13th March 2019, 04:34 AM   #7
Myint67 is offline Myint67  Singapore
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Let me in 6pcs pls
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Old 13th March 2019, 08:55 PM   #8
AmpUtator is offline AmpUtator  United States
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GB: Round #4; Fo-Felix & GB #1 AC Receptacle Enclosure
I'm good with the 12 boards I have .
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Old 14th March 2019, 12:08 PM   #9
dewdrop is offline dewdrop  Singapore
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GB: Round #4; Fo-Felix & GB #1 AC Receptacle Enclosure
Default Help Needed

I have bought the boards from GB #3 and finally assembled the boards into a metal casing.

I used the light bulb mains test to power up the unit and the bulb never dim. I assume that there should be a minimal current draw if its working correct but the bulb was as bright as it can be. So it seems that there is something wrong with my setup. Can someone with a working unit confirm that?

Are the Comocos directional? I assume that they are not.

I did solder the bypass resistor on the back of the PCB as shown in #117.

So I have 2: one for the other non-fused side and the one on the back is on the back of the PCB.
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Last edited by dewdrop; 14th March 2019 at 12:09 PM. Reason: Grammar
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Old 14th March 2019, 06:10 PM   #10
Destroyer OS is offline Destroyer OS  United States
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GB: Round #4; Fo-Felix & GB #1 AC Receptacle Enclosure
Can you measure the DC resistance on one of the boards, without anything connected, from the input?

Comocos are not directional.

The draw on a board may only be something like 90mA.
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