Group buy: DCT03 DC trap (filter) for toroidal transformers

[kallel123]

boards arrived and they look very nice thank you very much will put to good use now..awsome

 

[mlloyd1]

Forgot to mention that my boards arrived a couple of days ago.
Thanks,
mlloyd1

Most likely. Did you mention any other address?

 

[peranders]

I'll hope that everyone has got their boards.



Currently not, still waiting for the pcb´s


Regards


Jörg

Hi, the pcb's are returned to me due to incomplete address but you have got an email from how to do.

 

[sq225917]

Heard my mates install yesterday, big difference in the sound across the entire fr.

 

[peranders]

Notice that this gadget only removes mechanical hum from the transformer.

 

[YNWOAN]

It does indeed stop transformer hum - but I also believe it has quite a significant impact on the sound (in a good way).

 

[MIKEVO]

I got my 3, thank you. I usually hard wire mine.

I agree DC Blockers can make Amps with Toroids sound better as the DC offset can saturate the core of the Toroid, causing it to perform badly.

 

[kallel123]

can you give me a good cap and diode value for 110vac thats my country voltage ?im good for 12 amps

 

[peranders]

If you read the documentation, it will be a good start but the suggested values will fit your need although with a bit overkill. Notice that the current only is important here. Max voltage is only 4 volts regardless of mains voltage.

 

[Ralphien]

Is there a suitable ABS enclosure other builders have used?

The ones I can find are too small.
If I use a metal enclosure is this OK if I earth it properly?
What sort or insulation board should I use under the PCB?
Thanks for the help.
Ralph

 

[peranders]

If you mount the pcb 10 mm above the metal, then it's OK. The metal must be grounded to protective earth.

 

[AmpUtator]

Per-Anders,

I have your DCT03 that I'm planning on installing inside an aluminum enclosure along with three Fo-Felix AC conditioners. My power amp transformers do not hum or buzz.

Would it still be beneficial to include the DCT03 with my Fo-Felix.

Thanks for any advice. This is my first mains project.

Attached is a draft photo of the project.

 

[peranders]

You don't need to fix a problem you don't have. The DC filter will only remove DC, nothing more. If you feel better adding this filter, why not add it?

 

[AmpUtator]

I do feel a little better about adding the DCT03 but only because builders of the original Felix conditioners added a blocker but just a couple caps and a 35A bridge rectifier. I already have the parts to build the DCT03.

 

[AmpUtator]

I'm making progress with my first build.
At first glance those Vishay Rectifiers look intimidating, at least to me, plus the big .050 diameter leads.

After some trial and error bending the leads around a .080 diameter nail worked pretty good giving a spacing of 15mm almost every time.
Crude but it works.

To solder them using my Hakko 888D I'm thinking 700F with Kester 44, 63/37 or 60/40. I have both in 0.5mm and 1.0mm diameters plus some liquid flux.

It must take some HEAT to solder those Rectifiers.

 

[peranders]

I use a bending plier like this:
Pliers - Lindstrom EX 7590 Round Nose Wire Bending ErgoGrip – Micro-Tools

 

[shattered_dream]

Per-Anders,

I have your DCT03 that I'm planning on installing inside an aluminum enclosure along with three Fo-Felix AC conditioners. My power amp transformers do not hum or buzz.

Would it still be beneficial to include the DCT03 with my Fo-Felix.

Thanks for any advice. This is my first mains project.

Attached is a draft photo of the project.

Not really good idea... I had the Folsom behind the DC trap... When switching on there was sometimes a spark at the Folsom PCB and only on the one behind the DC trap...
I have the DC trap only because in my amp there is a 2000va toroid..

 

[AmpUtator]

Not really good idea... I had the Folsom behind the DC trap... When switching on there was sometimes a spark at the Folsom PCB and only on the one behind the DC trap...
I have the DC trap only because in my amp there is a 2000va toroid..

Could that be before Folsom suggested to use nylon washers above and below the PCB stand-offs?



I have the Folsom's as well and have been planning on putting (2) 3 amp Comoco's and (1) 17 or 20 amp Bourns behind the DCT-03.

 

[shattered_dream]

On my construction everything regarding this is made of plastic... Destroyer OS told me in advance

 

[peranders]

Not really good idea... I had the Folsom behind the DC trap... When switching on there was sometimes a spark at the Folsom PCB and only on the one behind the DC trap...
I have the DC trap only because in my amp there is a 2000va toroid..

Spark, that sounds not good. Has the pcb approved creapage distances? Where do you have sparks, can you show me?