[time-nuts] Power supply for OCXO using "USB power blocks"

[Richard (Rick) Karlquist]

Check out the LT3045-1.  It is an ultra low noise (2nv) linear
regulator with very high PSRR that has a 1 MHz bandwidth.
The -1 version can control an external switcher (or linear)
regulator ahead of it, where the voltage drop across the
LT3045-1 can be set to, say 1V, and the front end supply
output voltage automatically is 1V above the LT3045-1
output voltage.  It has 120 dB PSRR at 120 Hz.  You
can buy an eval board for it.  Multiple LT3045's can be
paralleled for additional current handling.  If the switcher
is of the isolated type, you have galvanic isolation for
the ultimate OCXO performance.

I think the vendor really got this right.

Rick N6RK