[time-nuts] Linear voltage regulator hints...

[Hal Murray]

eb at telight.com said:
> If the plan is to use a three-terminal regulator after all, I'd  suggest not
> using a low-dropout (LDO) type if the raw input supply is  noisy - the LDOs
> usually have PNP output transistors (for positive  regulators), so may tend
> to have poorer HF input ripple rejection  than equivalent ones with NPN
> passers. 

In this context, what is "high"?

Why don't filter caps solve that end of the spectrum?


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