Acer TravelMate 620 TravelMate 620 Service Guide - Page 35

LCD Item Electrical Specification Supply voltage for LCD display (V) Supply voltage for LCD backlight (Vrms) Specification 3.3 690 AC Adapter Item Vendor & model name Input Requirements Maximum input current (A, @90Vac, full load) Nominal frequency (Hz) Frequency variation range (Hz) Nominal voltages (Vrms) Inrush current Efficiency Output Ratings (CV mode) DC output voltage Noise + Ripple Load Output Ratings (CC mode) DC output voltage Constant output Dynamic Output Characteristics Turn-on delay time Hold up time Over Voltage Protection (OVP) Short circuit protection Electrostatic discharge (ESD) Dielectric Withstand Voltage Primary to secondary Leakage current Regulatory Requirements Delta ADT-60XB D 3P Specification 1.5 A @ 90Vac 0.9 A @ 180Vac 47 - 63 47 - 63 90 - 270 The maximum inrush current will be less than 50A and 100A when the adapter is connected to 115Vac(60Hz) and 230Vac(50Hz) respectively. It should provide an efficiency of 83% minimum, when measured at maximum load under 115V(60Hz). +19.0V~20.0V 300mvp-pmax (20MHz bandwidth) 0 A (min.) 3.16 A (max.) +12V ~ +19V 2.75 ± 0.2 A 2 sec. (@115Vac) 4 ms min. (@115 Vac input, full load) 24 V Output can be shorted without damage 15kV (at air discharge) 8kV (at contact discharge) 1500 Vac (or 2121 Vdc), 10 mA for 1 second 0.25 mA max. (@ 254 Vac, 60Hz) Internal filter meets: 1. FCC class B requirements. (USA) 2. VDE 243/1991 class B requirements. (German) 3. CISPR 22 Class B requirements. (Scandinavia) 4. VCCI class II requirements. (Japan) Chapter 1 27