[time-nuts] Low noise voltage regulators

[Neville Michie]

Hi,
I remember a reference, probably by Bruce, that LEDS provide a low  
noise voltage reference.
I am proposing to build a voltage regulator for a thermally  
controlled LPRO rubidium oscillator,
with the voltage regulator being mounted on the 0.5 inch thick  
aluminium heat sink plate.
The LEDS would also be mounted on the plate, which has controlled  
temperature.
The LPRO has internal voltage regulation, and by running it at ~40C  
and 18Volts, the thermal
flux within the unit is minimised as is the power demand.
What I want to know is if a LM317 running on a stack of LEDs driven  
by the LM317 output
would provide a low noise power source? What would be better?

cheers, Neville Michie