Compare with CRC or CLC

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The L in a CLC needs a minuimum current to regulate, and stops
regulating if the current is too high and it saturates, so its ideal
for the supply of a constant current class A output stage.

CRC does not have minimum or max currents so is better for
class aB but of course the voltage drop across the R is not
good at high currents, so not popular for output stages.

CRC is popular when you can significantly reduce voltage
without effect - e.g. decoupling the input stage of an amplifier.

:) sreten.
 
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