Looks very nice! Will you make the PCB available for us?
Where did you get that box?
Jan
here you are
BOX
Extruded PCB Aluminum Box Black Enclosure Electronic Project Case DIY 50*25*25mm 937266550256 | eBay
RCA
RCA Female Socket Chassis High-Quality Connector Phono Copper Jack Amp HiFi AT5 | eBay
22nF 1% FKP2 WIMA
5x Capacitor 22nF, 63V, 1%, FKP2 WIMA | eBay
Attachments
Great! I just ordered a bunch of boards at Seeed. Delivery 2-3 weeks.
Anyone want one? $2 + shipping (letter) at cost.
If LKA is OK with that, of course. LKA, if you want some, let me know, my gift back to you.
Jan
Anyone want one? $2 + shipping (letter) at cost.
If LKA is OK with that, of course. LKA, if you want some, let me know, my gift back to you.
Jan
My passive 1K Twin-T notch filter based on Victor's schematic. (I got pcb yesterday, in evening assembled and measured)
Simulated depth 75dB, measured 58dB.
See attached document for more
Nice and clean work! But I would combine notch and buffer amp. That's safer.
Are these original WIMA capacitors? FKP for 30 cents seems strange to me. A good FKP costs 1 euro.
Are these original WIMA capacitors? FKP for 30 cents seems strange to me. A good FKP costs 1 euro.
FKP2C022201J00JSSD WIMA | Mouser Europe
Qty 100 - unit price 0.286euro, but 5%
Yes, I want one, if available? 😀Great! I just ordered a bunch of boards at Seeed. Delivery 2-3 weeks.
Anyone want one? $2 + shipping (letter) at cost.
If LKA is OK with that, of course. LKA, if you want some, let me know, my gift back to you.
Jan
I am using for this kind of sensitive applications 1837 series Vishay/Roederstein, mouser 75-MKP1837322161. In Samuel Groner's cap test they came out as the best.
Jan
Jan
I am using for this kind of sensitive applications 1837 series Vishay/Roederstein, mouser 75-MKP1837322161. In Samuel Groner's cap test they came out as the best.
Jan
It is very interesting, Jan. Can this test be read anywhere?
I would say this is the best:I am using for this kind of sensitive applications 1837 series Vishay/Roederstein, mouser 75-MKP1837322161. In Samuel Groner's cap test they came out as the best.
Jan
FKP2C021001G00ESSD WIMA | Mouser
And here is Samuel's measurement. Appendix A.
Jan
Can we see your comparative measurements Ralf? We can then compare with those from Samuel.
Jan
Jan
I would say this is the best:
FKP2C021001G00ESSD WIMA | Mouser
Can we see your comparative measurements Ralf? We can then compare with those from Samuel.
Jan
Attachments
Unfortunately, Samuel has not tested WIMA. But I would still say that the FKP of WIMA is probably better than the MKP Röderstein.
But I would still say that the FKP of WIMA is probably better than the MKP Röderstein.
Sure, unfounded speculation can be presented as fact. Happens all the time in politics, so why not in diyaudio. 😎
Jan
Unfortunately, Samuel has not tested WIMA. But I would still say that the FKP of WIMA is probably better than the MKP Röderstein.
Sami used an older ap 2722, may newer ap 555 will provide new results.
Hp
At these levels we have to begin questioning if the results are consistent over time or if who was running the manufacturing line that day makes a difference in the results. Or if the quality differences of the film makes a difference, or if the end soldering machine adjustment makes a difference, or if.......
But you get the point, we have very little data about consistency over time with these products at this level. Which is one of the reasons I believe Samuel leans towards COG for some of these things, the process is less complex to manufacture and may lead to more consistent results.
But whose to know. Who has the equipment and lots of spare time 🙂
Cheers
Alan
But you get the point, we have very little data about consistency over time with these products at this level. Which is one of the reasons I believe Samuel leans towards COG for some of these things, the process is less complex to manufacture and may lead to more consistent results.
But whose to know. Who has the equipment and lots of spare time 🙂
Cheers
Alan
Yes, the capacitors test is not so easy. Also the different results may appear at different frequencies, signal levels and from piece to piece. Every example must be individually tested when needs to use it in a sensitive place. Anyway the film/foil Wima FKP2 and FKP3 are very good caps with relatively stable performance.
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