[USRP-users] 12V to 6V Converter for USRP Supply
Marcus D. Leech
mleech at ripnet.com
Sun Feb 17 20:46:01 EST 2013
On 02/17/2013 08:31 PM, Jeff Lambert wrote:
> You could reduce the dissipation by using some zener diodes to drop
> the voltage before the regulators. And you can parallel regulators to
> provide higher output. At the end of the day, a linear regulator is
> likely to be less noisy than a switch-based DC to DC converter. More
> expensive does not mean better performance. There is already a linear
> regulator on the board, so you really don't need the best power supply
> anyway, unless for some reason you need better noise performance than
> it already offers.
You can only parallel linear regulators if you have fractional-ohm,
high-watt, "spreader" resistors linking them together. If you
nearly-invariably, one regulator tries to source nearly all the current.
Shirleys Bay Radio Astronomy Consortium
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