SS-Opamp-V6-datasheet-V1.1.pdf - Google Drive
Inside the datasheet mention ""matched field-effect transistors""
Jfet i think...
Inside the datasheet mention ""matched field-effect transistors""
Jfet i think...
Hi @stew1234. See post #5310. I haven't received the Ubib regulators yet (group buy should ship soon), so I haven't gotten much further on this build. The layout will be close to what is shown in post 5310, but since the UBibs won't need the rectifier diodes, I'm going to mount the UBib boards a little closer to the center of the chassis so the attenuator boards will overlap the unpopulated ends of the UBibs a bit. This will give me a bit more room between the UBibs and the vertically mounted DCG3 boards to eliminate interference with the taller components. It's going to be a pretty tight fit, though.
Toroidy will do anything you want as a custom, but it's not inexpensive when you include shipping to the US. This one was about 250 euros shipped.
Jay
@ Nikos
You also installed nice thick single in line sockets for easily exchanging J1 J2 I see? Where did you get those?
You also installed nice thick single in line sockets for easily exchanging J1 J2 I see? Where did you get those?
Normal headers can also be useful especially if you want to quick swap parts. An extra pcb is used in this case. The example shown is from my DCB1. I use double headers for high current connections (current setting resistors)
The dip socket Nikos shows has a tight grip but if you do a lot of swaps that could be inconvenient and in this case you could do the pcb/headers trick. On the other hand if you need one of two swaps or just want the part socketed would do the job just fine
The dip socket Nikos shows has a tight grip but if you do a lot of swaps that could be inconvenient and in this case you could do the pcb/headers trick. On the other hand if you need one of two swaps or just want the part socketed would do the job just fine
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Hello.Tell me, is it possible to use condesators with a capacity of 0.18 µF(180nF) as C5? And as capacitors C3,C4 with a capacity of 3.3 µF? These I have in stock WIMA MKS2. The recommended ones must be ordered and waited for some time. Thanks.
C3 C4 are straight filters so it's alright, C5 is determining the reaction time of the servo op-amp and 180nF will make it bit slower so you may experience bit more offset than usual.
In other words the capacitors you now got are usable, they will not throw the design out of stability. They can differentiate a bit its bass behavior the most.
In other words the capacitors you now got are usable, they will not throw the design out of stability. They can differentiate a bit its bass behavior the most.
While i am "patiently" waiting on Teabug for the groupbuy goodies, i started with the case design.
I have always been a big fan of Luxman amp design, so i thought i would make a Luxman ish case.
It will be a tight fit with the balanced DCG3 as i will also put a dam 1941 in the same case with some Ian canada stuff, 4 R-core transformers and 8 Ultrabibs and some other peripherals.
Regards,
John
I have always been a big fan of Luxman amp design, so i thought i would make a Luxman ish case.
It will be a tight fit with the balanced DCG3 as i will also put a dam 1941 in the same case with some Ian canada stuff, 4 R-core transformers and 8 Ultrabibs and some other peripherals.
Regards,
John
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I see you're in the US. Where are those r cores from? All I have been able to find are lower power ones from Audiophonics that work with 115V.
Thank you Salas,
I use cad for mechanical engineering stuff and for cnc machining.
It is nice to be able to see how the end product is gong to look like.
If only the making of the case was as easy as the designing of the case.😀
regards,
John
I use cad for mechanical engineering stuff and for cnc machining.
It is nice to be able to see how the end product is gong to look like.
If only the making of the case was as easy as the designing of the case.😀
regards,
John
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At the moment i am trying to learn Kicad for some circuitboards i need for the preamp, first time for everything i guess.
regards,
John
regards,
John
They most probably did not even have some basic CAD back then but they made nice designs indeed.
Also the new Luxman stuff shows that they still got it.
This amp is actually using transformer volume control.
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You can find r-cores on alieexpress, probably the same ones audiophonics sell.
Ebay has a nice selection of r-cores, but also all chinese origin, atleast there are some higher power ones.
regards,
John