Operating instructions

4
Introduction
The PWS120 & PWS240 Power Supplies are MosFet based switchmode power supplies
designed for high reliability, high efciency and minimum size. Circuit innovations reduce
output ripple to levels previously available only from bulky, inefcient linear power supplies.
Current limiting and safe operating area circuitry protect the transistors. A crowbar circuit
protects any devices powered by the unit from excessive voltage in the unlikely event of a
failure.
Applications include running 12Vdc equipment from 120Vac power including VHF radios, CB
radios, sound equipment, GPS receivers, plotters, 12 Volt lighting systems and automotive &
marine electronics displays.
Specications
General
Input Voltage (Vac) 100 - 130 200 - 260
Input Isolation > 1500 VDC
Input Fuse (PWS120) 3 Amp AGC (120Vac) 2 Amp AGC (250Vac)
Input Fuse (PWS240) 6.3 Amp AGC (120Vac) 4 Amp AGC (250Vac)
Output Voltage (Vdc) 13.8 ± 0.1
Output Current (Amps) 10 Cont. / 14 Peak (PWS120) 23 Cont. / 25 Peak (PWS240)
Current Limit 16 Amps (PWS120) 27 Amps (PWS240)
Output Ripple (milliVolts) < 10 @ full load (PWS120) < 15 @ full load (PWS240)
Transient Response < 2V for 5A Surge
Efciency > 80% @ 12 Amps Out
Temp. Rise < 40 deg C @ 14 Amps Out
Length 7.5 in / 19.1 cm
Width 8.7 in / 21.8 cm
Height 2.4 in / 5.6 cm
Clearance 1 Inch (2.5 cm) all around
Material Marine Grade Aluminium
Finish Black Anodize / Black Powder Epoxy
Weight 3.0 lb / 1.4 kg (PWS120) 3.5 lb / 1.6 kg (PWS240)
* Specications subjects to change without notice.
Designed and manufactured by: ANALYTIC SYSTEMS WARE (1993) LTD.
8128 River Way
Delta, BC V4G 1K5 Canada
p. 604.946.9981 f. 604.946.9983
tf. 800.668.3884 US/Canada
www.analyticsystems.com [e-mail] Revised November 2014