Universal Input Ac/Dc Switching Power Supply Board - Thermo Scientific GENESYS 20 Service Manual

Electrical Circuit Description and Adjustment
8.2
Universal Input
AC/DC Switching
Power Supply
Board (Purchased)
4001-653
The AC/DC power supply provides fixed +5 volt and -12 volt supplies and a
quasi-regulated +12 volt supply. Heavy loading on the +5 volt supply will cause
the +12 volt supply to decrease in magnitude by as much as 2 volts. Short
circuit, overload, and over temperature protection is built-in. All outputs will be
disabled when any one output has a fault, for as long as the fault exists. A
replaceable AC line fuse is also located on the board. Specifications for the
current model:
Mfg/Model:
AC input voltage range:
AC input frequency range:
Minimum Output Power:
Output Voltages/Currents:
Internal Fuse:
Power Factor:
8 - 2
Power-One MAP40-3000
90-264 Volts AC
50-60 Hertz
40 Watts
+5 Volts, 3.0 Amps/5.0 Amps peak
+12 Volts, 2.0 Amps/3.5 Amps peak
-12 Volts, 0.3 Amps/0.5 Amps peak
2A/250Volt normal blow
5mmx20mm
0.67 typical