From what I've read a way to reduce ESR with smoothing caps is to connect in parallel, summing capacitance yet reducing resistance (1/R, etc).
However ESR increases significantly with smaller capacitors to the point where connecting in parallel defeats the object.
example: Vishay 100uF typ ESR 1.375Ohms. so two in parallel provides 0.6875 Ohms. The typical ESR for a 220uF is 0.629 Ohms. Less! I'm sure it is something I am not seeing, would appreciate somebody pointing it out.
However ESR increases significantly with smaller capacitors to the point where connecting in parallel defeats the object.
example: Vishay 100uF typ ESR 1.375Ohms. so two in parallel provides 0.6875 Ohms. The typical ESR for a 220uF is 0.629 Ohms. Less! I'm sure it is something I am not seeing, would appreciate somebody pointing it out.