[time-nuts] Trimble/Nortel 45000 GPS Locked ReferenceOscillatorboard
quartz55
quartz55 at hughes.net
Tue Dec 24 18:28:08 UTC 2013
True. Actually the book specifies 'Supply Voltage Ripple and Noise' at 350mVP-P (DC to 150MHz) for the 48V and <240VP-P for the 24V. I was thinking about trying the AC, but I think I'll stick with my linear 30VDC supply. But you can get one of those switchers for about $20.
Just because it has a bridge to allow connection of floating +24VDC or
-48VDC doesn't mean it is a good idea to apply AC. The input filter caps
may not be designed to handle the ensuing ripple current. I would tread
lightly in this area.
--
Brian Lloyd, WB6RQN/J79BPL
706 Flightline Drive
Spring Branch, TX 78070
brian at lloyd.com
+1.916.877.5067
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