Witch Electrolytic Cap after Rectifier for Low-Power usage?

dvb-projekt · 16th January 2010, 03:19 PM

Hi to all,

witch Electrolytic Cap after the rectifier do you prefer for low-power usage (max. 25V) ?

Feel free to vote and post your thoughts.

Best regards,
Oliver

star882 · 16th January 2010, 03:53 PM

I've seen a lot of those "witch" Fuhjiyus causing power supply failures. I prefer to replace those with Sanyo OS-CONs.

Geek · 17th January 2010, 03:53 AM

Of these, I believe the Panasonic FC has the lowest ESR.

Cheers!

wintermute · 17th January 2010, 07:50 AM

I was tossing up between Panasonic FM and the Nichicon FG, neither of which I have used (have used the Panasonic FC's)

Geek the FM's have a lower ESR than the FC's according to the datasheet 40-70% Less!

I just checked the max value at 25V and it is only 2700 uF The FC's go up to 5600 uF at 25V and the nichicon FG's 3300 and the rubycon ZL's 2700uF so depending on what values you need the choice may need to be made based on what values you can get! in each series...

Tony.

dvb-projekt · 17th January 2010, 08:06 AM

Quote:

Originally Posted by wintermute

I was tossing up between Panasonic FM and the Nichicon FG, neither of which I have used (have used the Panasonic FC's)

Geek the FM's have a lower ESR than the FC's according to the datasheet 40-70% Less!

I just checked the max value at 25V and it is only 2700 uF The FC's go up to 5600 uF at 25V and the nichicon FG's 3300 and the rubycon ZL's 2700uF so depending on what values you need the choice may need to be made based on what values you can get! in each series...

Tony.

Hi Tony,

don´t think much about the max. capacitance at 25V. If i would like to have more, i could insert an additional cap.

Therefore i limit the question only the voltage.

Best regards,
Oliver

Geek · 17th January 2010, 10:35 AM

Quote:

Originally Posted by wintermute

Geek the FM's have a lower ESR than the FC's according to the datasheet 40-70% Less!

Very cool!

I shall checkout my suppliers for these.

Cheers!

Pano · 17th January 2010, 05:42 PM

I've been very happy with the panny FM series. If I can't get that I use FC.

pelayostyle · 18th January 2010, 09:59 PM

Elna Silmic II

jackinnj · 19th January 2010, 02:33 AM

I think a "witch cap" flies on a broom.

zener_diode · 19th January 2010, 02:51 AM

Nichicon KZ. Mouser stocks many values now.

View Poll Results: Witch Cap do you prefere after the rectifier for low-power usage (max 25V)?
Panasonic FM	26	28.57%
Panasonic FC	18	19.78%
Rubycon ZL	3	3.30%
Rubycon ZLH	1	1.10%
Nichicon FG	12	13.19%
Black Gate Std.	7	7.69%
Other	24	26.37%
Voters: 91. You may not vote on this poll

16th January 2010, 03:19 PM	#1
dvb-projekt diyAudio Member Join Date: Feb 2009 Location: Willich Blog Entries: 18	Witch Electrolytic Cap after Rectifier for Low-Power usage? Hi to all, witch Electrolytic Cap after the rectifier do you prefer for low-power usage (max. 25V) ? Feel free to vote and post your thoughts. Best regards, Oliver __________________ Reference TDA1541A DAC project PCB´s / Tube-I-zator V2.0 PCB / SSHV-Shunt PCB / Pedja Rogic´s Discrete Diamond Non-Feedback I/V Stage - Stock status in my Blog

16th January 2010, 03:53 PM	#2
star882 diyAudio Member Join Date: Mar 2007	I've seen a lot of those "witch" Fuhjiyus causing power supply failures. I prefer to replace those with Sanyo OS-CONs. __________________ "Fully on MOSFET = closed switch, Fully off MOSFET = open switch, Half on MOSFET = poor imitation of Tiffany Yep." - also applies to IGBTs!

17th January 2010, 07:50 AM	#4
wintermute just another diyAudio Moderator Join Date: Aug 2003 Location: Sydney Blog Entries: 22	I was tossing up between Panasonic FM and the Nichicon FG, neither of which I have used (have used the Panasonic FC's) Geek the FM's have a lower ESR than the FC's according to the datasheet 40-70% Less! I just checked the max value at 25V and it is only 2700 uF The FC's go up to 5600 uF at 25V and the nichicon FG's 3300 and the rubycon ZL's 2700uF so depending on what values you need the choice may need to be made based on what values you can get! in each series... Tony. __________________ Any intelligence I may appear to have is purely artificial! Some of my photos

17th January 2010, 05:42 PM	#7
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	I've been very happy with the panny FM series. If I can't get that I use FC. __________________ Take the Speaker Voltage Test!


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17th January 2010, 03:53 AM	#3
Geek diyAudio Member Join Date: Sep 2004	Of these, I believe the Panasonic FC has the lowest ESR. Cheers!

18th January 2010, 09:59 PM	#8
pelayostyle diyAudio Member Join Date: Jan 2006 Location: los angeles	Elna Silmic II

19th January 2010, 02:33 AM	#9
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	I think a "witch cap" flies on a broom.

19th January 2010, 02:51 AM	#10
zener_diode diyAudio Member Join Date: Nov 2007 Location: Michigan	Nichicon KZ. Mouser stocks many values now. __________________ 1N4733

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