Acer 390 Series, Service Manual

Page: 34 / 204

1-22 Service Guide
1.4.25 AC Adapter
Table 1-29 AC Adapter Specifications
Item Specification
Vendor & model name Delta ADP-45GB Rev. E3, E5
Input Requirements
Nominal voltages (Vrms) 90 - 264
Nominal frequency (Hz) 47 - 63
Frequency variation range (Hz) 47 - 63
Maximum input current (A, @90Vac, full load) 1.5 A
Inrush current The maximum inrush current will be less than 50A and
100A when the adapter is connected to 115Vac(60Hz)
and 230Vac(50Hz) respectively.
Efficiency It should provide an efficiency of 83% minimum, when
measured at maximum load under 115V(60Hz).
Output Ratings (CV mode)
DC output voltage (V) +19.0V~20.5V
Noise + Ripple (mV) 300mvp-pmax (20Mhz bandwidth)
Load (A) 0 (min.) 2.4 (max.)
Output Ratings (CC mode)
DC output voltage (V) +12 ~+19
Constant output (A) 2.75 ± 0.2
Dynamic Output Characteristics
Turn-on delay time (s, @115Vac) 2
Hold up time (ms; @115 Vac input, full load) 5 (min.)
Over Voltage Protection (OVP, V) 26
Short circuit protection Output can be shorted without damage
Electrostatic discharge (ESD, kV)
±
15 (at air discharge)
Dielectric Withstand Voltage
Primary to secondary 3000 Vac (or 4242 Vdc), 10 mA for 1 second
Leakage current 0.25 mA maximum @ 254 Vac, 60Hz.
Regulatory Requirements
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)