is it possible to have a class A amp, with a switchmode psu (if the output of the psu is put through a linear regulator to minimise ripple)...i was thinking of using the lm2575 type switching regulator...is it possible to get 60V out of this chip..ideas would be much appreciated..
A 2575 (or the higher frequency 2595) won't go this high in voltage. There aren't many buck converters with built-in switching transistors that are designed for high-voltage operation.
With a competantly designed switcher you won't need a linear post-regulator but you will need decent filtering on the output.
As a class-A amp (by definition) draws a steady current from the PSU, do you really need a regulated supply?
With a competantly designed switcher you won't need a linear post-regulator but you will need decent filtering on the output.
As a class-A amp (by definition) draws a steady current from the PSU, do you really need a regulated supply?
demons_wing said:
What would be the poin tof using a switchmode power supply (used mainly for their efficiency and PFC abilities) if you are then going to ruin the efficiency of the supply (or feed a class-a amp from it for that matter) by using a linear regulator after it.
Surely in this case it would be a lof simpler,safer and cheeper in the end yo simply go with the traditional power supply for your project?
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