Acer TravelMate 4020 TravelMate 4020 Service Guide - Page 34

AC Adapter Item Specification Frequency variation range (Hz) 47 - 63 Nominal voltages (Vrms) 90 - 264 Inrush current The maximum inrush current will be less than 50A and 100A when the adapter is connected to 100Vac(60Hz) and 240Vac(50Hz) respectively. Efficiency High efficiency 85% minimum, at 100~240Vac AC input, full load, warm-up condition. Output Ratings (CV mode) DC output voltage Offers constant voltage 19.0V output source with 150W max output power capacity. Noise + Ripple 300mvp-pmax (20MHz bandwidth) for resistor load Output current 0 A (min.) 3.5A (max.) Output Ratings (CC mode) DC output voltage 18.0 ~ 20.0 Constant output 7.9A Dynamic Output Characteristics Start-up time 3 sec. (@115 Vac and 230Vac full load) Hold up time 5ms min. (@115 Vac input, full load) Over Voltage Protection 25V (OVP) Short circuit protection Output can be shorted without damage, and auto recovery Electrostatic discharge (ESD) 15kV (at air discharge) 8kV (at contact discharge) Dielectric Withstand Voltage Primary to secondary 4242 Vdc for 1 second- Leakage current 60uA at 240Vac/60Hz Regulatory Requirements 1. FCC class B requirements (USA) 2. VDE class B requirements (German) 3. VCCI classII requirements (Japan) Power Management ACPI Mode Mech. Off (G3) Soft Off (G2/S5) Working (G0/S0) Sleeping State (S3) Sleeping State (S4) Power Management All devices in the system are turned off completely. OS initiated shutdown. All devices in the system are turned off completely. Individual devices such as the CPU and hard disk may be power managed in this state. CPU Power Down VGA Power Down PCMCIA Suspend Audio Power Down Hard Disk Power Down Super I/O Power Down Also called Hibernate state. System saves all system states and data onto the disk prior to power off the whole system. 28 Chapter 1