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Introduction
The Kepco FAW 100 Watt Series low profile high frequency switching power supplies employ forward conversion and operate with a 78% efficiency with either a-c or d-c input. A resistor and thyristor soft-start circuit limits start-up surge. Surface mount technology permits efficient component layout for minimum mounting space. Six models may be selected for outputs of 5, 12, 15, 24, 28, or 48V. ?POWER OK? logic and a green ?POWER OK? LED are provided. A steel cover (Model CA 27) is available as an option. Output voltage may be adjusted with a trimmer accessible near the input-output terminal strip (R65, see Figure 4, View ?A?). When the input is cut off, the output is maintained for 15 milliseconds minimum. If the power supply shuts down, it is then necessary to wait 90 seconds minimum (120V a-c input) or 120 seconds minimum (240V a-c input) before reconnecting the a-c input power to turn on the unit again. EMI filtering meets FCC Class B (100 to120 Volts) rating and VDE 0871 Class B (220 to 240 Volts) rating. This page contains specifications for each model of the FAW 100 Watt Series.
Features
a-c input 85-264V; d-c input 105-370V.
Adjustable voltage: Internal trimmer.
Built-in EMI filter: Attenuates the conducted noise below the requirements of both FCC and VDE 0871 for Class B computing devices. Optional perforated metal covers attenuate radiated noise and provide
Connections: Input and output screw terminal barrier strip.
Holding time: Output is sustained by internally stored energy for 20ms typical, 15ms minimum.
Operating frequency: 120-130KHz.
Power OK LED: Green.
Power OK logic: Open collector.
Remote error sensing: The 50, 100 and 150W FAW provide separate remote error sense terminals: 0.25V drop/wire.
Safety: FAW are recognized by UL 1950, certified by CSA 1402C and approved by TÜV Rheinland to EN60950.