Hi everyone!
My dealer can't seem to provide Elna Silmic II in 4.7uF 63v. He does have 4.7uF 50v and 10uF 100v? Can I use either of these? What could happen if I placed the 10uF?
This is for the power section of my Audiolab 8000A, the original are 63v but these are the only caps in all the amp that are 63v, all others are under 50v, including PSU. I have already replace all the other caps to a remarkable improvement, just these are the last 4 caps remaining.
There are some chinese sellers on ebay or outside it, could these be trustworthy or are most probably fakes?
tubeshunter
PC MotherBoard Capacitors Store
Or is Headfishop a good seller?
If I were to replace those 4.7uF 63v with film types, can I use a smaller value? What would be a good capacitance for that?
Thank you!
My dealer can't seem to provide Elna Silmic II in 4.7uF 63v. He does have 4.7uF 50v and 10uF 100v? Can I use either of these? What could happen if I placed the 10uF?
This is for the power section of my Audiolab 8000A, the original are 63v but these are the only caps in all the amp that are 63v, all others are under 50v, including PSU. I have already replace all the other caps to a remarkable improvement, just these are the last 4 caps remaining.
There are some chinese sellers on ebay or outside it, could these be trustworthy or are most probably fakes?
tubeshunter
PC MotherBoard Capacitors Store
Or is Headfishop a good seller?
If I were to replace those 4.7uF 63v with film types, can I use a smaller value? What would be a good capacitance for that?
Thank you!
Well... The schematics is a bit different from what is in the amp, as mine's a later revision, so I don't know what it's function is really. Two of these do not appear in the schematics.
I will try to get a multimeter and measure it's voltage. I am almost sure 50v will do but I'm kind of afraid of peaks and capacitors lifetime.
I will try to get a multimeter and measure it's voltage. I am almost sure 50v will do but I'm kind of afraid of peaks and capacitors lifetime.
What would happen ! Well that depends on what it does. If its rail decoupling then no problem. And you should be able to determine that just by looking at the PCB and where it goes
If its not directly across a rail then it does something else...
If its in the audio path somewhere a time constant will be altered. If it were a timing cap for say a switch on delay you might end up waiting twice as long for the amp to come on. If its in a DC protection circuit it might make the delay detecting a DC offset fault longer.
Do you see
Its an impossible question to answer without seeing the amp or the correct circuit.Film caps should be available in 4.7uf from many sources I would have thought.
So I finally got a multimeter and it rates at 41.8V... Can I use the 50v caps then? What is the peak value for the Silmic II 50v? Can they explode?
Also, I honestly don't know what these caps are for, all I know is that I accidentaly broke one the caps legs and the amp continued to function perfectly. My guess these are the caps that have no value in the scheme that are place in the Pre-Amp in line of the amp.
Also, I honestly don't know what these caps are for, all I know is that I accidentaly broke one the caps legs and the amp continued to function perfectly. My guess these are the caps that have no value in the scheme that are place in the Pre-Amp in line of the amp.
For what we deal with here the peak working voltage of the cap is the same as it DC voltage rating. So peaks of 50 volts are OK for a 50 volt cap. The 50 volts is an absolute max rating. 42 volts is perfect, no problems.
(For applications where the cap is across AC the ratings are sometimes very different but that won't apply here)
So no problems
(For applications where the cap is across AC the ratings are sometimes very different but that won't apply here)
So no problems
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