Acer TravelMate 250 TravelMate 240/250 Service Guide - Page 37

LCD Item Electrical Specification Supply voltage for LCD display (V) Supply voltage for LCD backlight (Vrms) 3.3 (typ.) 650 (typ.) Specification 3.3 (typ.) 650 (typ.) AC Adapter Item Vendor & model name Input Requirements Maximum input current (A, @90Vac, full load) Nominal frequency (Hz) Frequency variation range (Hz) Input voltage range (Vrms) Inrush current Efficiency Output Ratings (CV mode) DC output voltage Noise + Ripple Load Output Ratings (CC mode) DC output voltage Constant current mode 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 Liton Specification 1.5 A @ 110Vac 1.0 A @ 240Vac 50-60 47-63 90-270 The maximum inrush current will be less than 50A and 100A when the adapter is connected to 115Vac and 230Vac respectively. It should provide an efficiency of 80% minimum, when measured at maximum load under 115Vac. 19V 300mVp-pmax (20 MHz bandwidth) 0(min) 3.16A(max) 19V +/-1.0V for CV mode 3.6 +/- 0.3A 3 sec (@ 115Vac) 5ms (@115Vac, Full load) 24V 3.9A max can be protected and output can be shorted without damage 15KV (at air discharge) 8KV (at contact discharge) 3000Vac 0.25 mA max. (@ 254Vac, 60Hz) Safety Requirements: 1.The subject product rated 100-120V 60Hz must be listed under UL 1950 and certified with SCA Standard C22.2 No.950. 2.The subject product rated 200-240V 50Hz must comply with low voltage directive 73/23EEC. EMI Requirements: 1.The subject product rated 100-120V 60Hz must meet the EMI requirements of FCC part 15, Subpart B for Class B Digital Device and get FCC Certification before marketing into USA and Canada. 2.The subject product rated 200-240V 50Hz must meet the EMC Directive 89/ 336/EEC. 3.The subject product rated 100-120V must meet the VCCI-2 EMI requirements. 28 TravelMate 240/ 250