I have been looking at linear power supply design and have noticed that many amplifiers now use multiple parallel capacitors where as previously a single large capacitor was used. Apart from the additional PCB required to mount many capacitors are there any disadvantages to this approach. As a quick comparison I have listed the following combinations all of which cost about the same
Type ESR Ripple I Total ESR Total I
10000uF 63V screw 0.018R 13A 0.018R 13A
4 X 10000uF 63V PCB 0.033R 4.4A 0.00825R 17.6A
8 X 4700uF 63V PCB 0.018 4.86A 0.0081R 48.6A
10 X 2200uF 63V PCB 0.15R 2.5A 0.015R 25A
The figures listed are ESR and ripple current.
Which would be the best combination to use to power a 100W amplifier
Stuart
Type ESR Ripple I Total ESR Total I
10000uF 63V screw 0.018R 13A 0.018R 13A
4 X 10000uF 63V PCB 0.033R 4.4A 0.00825R 17.6A
8 X 4700uF 63V PCB 0.018 4.86A 0.0081R 48.6A
10 X 2200uF 63V PCB 0.15R 2.5A 0.015R 25A
The figures listed are ESR and ripple current.
Which would be the best combination to use to power a 100W amplifier
Stuart
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