I'm replacing my robust CLC filter with Jumas cap multiplier. More efficient and better better ripple filtering almost double.
though - cap multi having different virtues , comparing to CLC
Rewind , nothing else than try , however that's too tight for my liking
Rewind , nothing else than try , however that's too tight for my liking
big donut, big chokes, big caps and not big chassis. you should start to consider on separate chassis for those psu, look at PL amplifier.
I made separate psu chassis with teak wood, which cost less than your 1 foil choke.
I made separate psu chassis with teak wood, which cost less than your 1 foil choke.
Make it part of the styling to use a curved or bumped-out lid, and then you can fit the hamburgers under there too.
my take on filter:
a long CRCR.. etc. chain with small values of resistance (say.1 or .22) between banks (say 10mF) and a large bank at the end
a long CRCR.. etc. chain with small values of resistance (say.1 or .22) between banks (say 10mF) and a large bank at the end
I may saw out a hole in the inner bottom of the chassis. the chassis is a Dissipante 4u 30 cm deep. I don't like to have 0.5cm between a coil and a power trafo. I expected something huge, but only recieved something that was somewhat large.
put some rubber on those lips , or silicone or whatever , there is already cut in PVC tape isolation .......
like to see some lateral thinking ......... 🙂
like to see some lateral thinking ......... 🙂
Keen eye. I just discovered it. Guess I should repair that. And I am fresh out of kapton tape. I will use a silicone frying pan pad as protection in the future. Heat resistant and durable. What else can I repair it with?
The Sedlbauer comes with a built in plastic hole where I can just fasten a screw and a spacer. I will get a strong L-shaped piece of metal, the one I have bends to the sheer weight of that thing.
The Jantzen cross coils I will use in the CLC is made up of copper foils. I got the advice not to use it as a choke, because this type of coil may have unwanted capacitance, which regular coil does not have. Anyone heard about this? I would like to use it as it is 2.7mH and only 0.45 ohm and will hopefully not get hot and not have problems with saturation.
The Sedlbauer comes with a built in plastic hole where I can just fasten a screw and a spacer. I will get a strong L-shaped piece of metal, the one I have bends to the sheer weight of that thing.
The Jantzen cross coils I will use in the CLC is made up of copper foils. I got the advice not to use it as a choke, because this type of coil may have unwanted capacitance, which regular coil does not have. Anyone heard about this? I would like to use it as it is 2.7mH and only 0.45 ohm and will hopefully not get hot and not have problems with saturation.
Last edited:
Okay, the protection plastic on a Sedlbauer is about as heatresistant transpaent package tape. So I will repair with package tape.
I just got a reply from Erse audio and their similar Foil Q and he says: "Yes we have many clients using our foil Q in power supplies as a choke." Although I would have been really surprised if he said "No! Don't buy our product!"
I just got a reply from Erse audio and their similar Foil Q and he says: "Yes we have many clients using our foil Q in power supplies as a choke." Although I would have been really surprised if he said "No! Don't buy our product!"
Last edited:
tape on Donut - use whatever you have - even blob of neoprene glue will do ....... though - that was just a pull , that scratch being just of cosmetic importance
regarding ribbon choke - try it and leave in , if you like result
no need to overthink it
regarding ribbon choke - try it and leave in , if you like result
no need to overthink it
Just wondering if these https://www.madisoundspeakerstore.com/steel-laminate-15-awg/steel-laminate-3.3-mh-15-awg-inductors/ would work. They are relatively cheap.
3.3mH 0.185 ohm with coil vs jantzen crosscoil 2.7mH 0.45 ohm. I think I will try the foil coil. 🙂 I read that the prefferable choke for a tube amp is 5-10mH, together with a 50-100uf cap. But that is probably something different than what what we are talking about.
oreo
I remember seeing those in some PL X amps
hopefully ,someone will chime in , having experience in first hand
I remember seeing those in some PL X amps
hopefully ,someone will chime in , having experience in first hand
It's not on his website but I believe Steve at ApexJr still has laminate core inductors for cheap: 9mH (~0R6 DCR, 19AWG) for $4.50. Give him a ring!
http://www.apexjr.com/index.html
http://www.apexjr.com/index.html
This is what Mr Nelson uses himself in the XA 160 amps
Attachments
Wow, great info about the XA 160 amps. So with a 2.7mH foil coil air core you get approx. the same DCR as a 10mH cored coil (with a pedigree). I am thinking I should have a coil shootout in the near future.
But. I was given the recommendation by someone that I should have equal capacitance on both sides of the coil, and Nelson Pass uses 6 large capacitors. I haven't seen the schematic, but maybe its a CLCLC??
But. I was given the recommendation by someone that I should have equal capacitance on both sides of the coil, and Nelson Pass uses 6 large capacitors. I haven't seen the schematic, but maybe its a CLCLC??
Attachments
Last edited: