SSL - why tantalum caps in release

[Nikolay]

Hi I like to ask you, may I use normal wima (or any other) poliester capacitors in release configuration in gyraf's ssl compressor. And why there is used tantalum caps?

Thanks

 

[gyraf]

Polyester will be fine.

Tantalums are used because they're cheaper and smaller, but still dosen't change capacitance (much) over time like electrolytics would do.

Jakob E.

 

[matthias]

btw: ssl used normal electrolytics in their xlogic g series compressor.

I've haerd that tants are much faster in charging and discharging than standard electrolytics.. but I don't know if it would make any difference in this application..

 

[jensenmann]

tantalums have lower leakage currents

 

[Nikolay]

Thanks for your answer.
I will check capacitors and choose this polyester, who have the same or near the same value on the original
For the 6.8uF capacitor I will use tantalum.

 

[AyGuid]

Could i use non polarized poliester caps for this same reason?

 

[JohnRoberts]

Could i use non polarized poliester caps for this same reason?

Most polyester caps are non-polar and quite large for several uF.

JR

 

[AyGuid]

Yes. But coul i use non polarize caps in this section of the comp?

 

[Michael Tibes]

yes, you can.

Michael

 

[Gene Pink]

tantalums have lower leakage currents

Until they don't, and "Napoleon".

Gene

 

[PRR]

It may be worth noting that Tants have less leakage than 1970s Al e-caps.

Modern e-caps are much better, and "low leakage" Al caps are essentially where Tants used to be.