Reading between the lines ...
Would a variable input voltage unit (second model, below)
be more likely to be noisy than a fixed input unit?
In the specs of the second unit (see below) there is this:
"Approvals: FCC Part 15 Class B,FCC Part 68,NOM,UL 1778"
Does this tell us anything useful?
Thanks! & 73, doc KD4E
-------------------------------------------------------------
APC BE650G UPS [4N82E16842101339]
APC BE650G 650 VA 390 Watts UPS - Retail
* Output Voltage: 120V
* Outlets: 8
* Outlet Type: (4) NEMA 5-15R (Battery Backup) (4) NEMA
5-15R (Surge Protection)
* Battery Run Time: Typical Backup Time at Half Load:
13.1 minutes (195 Watts) Typical Backup Time at Full Load:
3.8 minutes (390 Watts)
* Battery Recharge Time: 16 hour(s)
* Battery Replaceable: RBC17
* Alarms: Alarm when on battery : distinctive low
battery alarm : overload continuous tone alarm
* Data Line Protection: RJ-45 Modem/Fax/DSL/10-100
Base-T protection,Co-axial Video / Cable protection
* Model #: BE650G
* Item #: N82E16842101339
* Return Policy: Standard Return Policy
* Free Shipping
* Your Price:$89.99
-------------------------------------------------------
APC BE750G UPS [36N82E16842101311]
APC BE750G 750 VA 450 Watts Power Saving Back-UPS ES - Retail
* Input Voltage Range: 88 - 139V
* Input Frequency: 50/60 Hz +/- 3 Hz (auto sensing)
* Output Voltage: 120Vac +/- 5%
* Outlets: 10
* Battery Run Time: Typical Backup Time at Half Load:
11.3 minutes (225 Watts) Typical Backup Time at Full Load:
2.3 minutes (450 Watts)
* Battery Recharge Time: Typical recharge time: 16 hour(s)
* Battery Replaceable: RBC17
* Approvals: FCC Part 15 Class B,FCC Part 68,NOM,UL 1778
* Model #: BE750G
* Item #: N82E16842101311
* Return Policy: Standard Return Policy
--
Thanks! & 73, doc, KD4E
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