Has someone playerd with super caps. I saw a Maxwell 3F/3V 20m ohms is 35 euros. Does it measure 3V or lower ? Does it work like a cell with these high Farad numbers or more like a classic cap : if you feed it with 2 V pre reg then the load will see 2V ?
With 3F or 1.5 F if two in serie,does it isolate enough from a power suplly pluged to main ?
Sorry if off topic
With 3F or 1.5 F if two in serie,does it isolate enough from a power suplly pluged to main ?
Sorry if off topic
i might be probably wrong, but so far i could hardly find any practical use of supercaps in audio applications
as supercaps are mainly intended to fill the gap between batteries and capacitors, the high burst power is ideal for applications such as handheld spot welders
as supercaps are mainly intended to fill the gap between batteries and capacitors, the high burst power is ideal for applications such as handheld spot welders
Ripple filtering for ic having poir PSRR ? Smalish looks ?
I wonder for DAC where the star ground if often under the dac chip and not at the piwer supply..
I wonder for DAC where the star ground if often under the dac chip and not at the piwer supply..
just tested that my 3F/2.5V took over 2mins to charge up at 4.5A so:
for 1.8v post regulator cap, the high in rush current will likely kill regulators without proper protection, and that charge up time will greatly complicate your power up sequence which is critical for some chips
for anything else like 3.3/5.0/12/15V, same problem as above and in addition, you need to put them in series, and you want some balancing circuit or they blow up by overvoltage at some random time, then you end up higher ESR and random kick-in of balancer, probably not what you want
at the end, i would much prefer polymer caps over supercaps in this regard
for 1.8v post regulator cap, the high in rush current will likely kill regulators without proper protection, and that charge up time will greatly complicate your power up sequence which is critical for some chips
for anything else like 3.3/5.0/12/15V, same problem as above and in addition, you need to put them in series, and you want some balancing circuit or they blow up by overvoltage at some random time, then you end up higher ESR and random kick-in of balancer, probably not what you want
at the end, i would much prefer polymer caps over supercaps in this regard
