APB-DynaSonics ProDesk-4, Руководство пользователя

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APB-DynaSonics
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POWER SUPPLY PS450 - SPECIFICATION
High efficiency switch-mode power supply
Zinc-plated steel enclosure with ventilation by internal fans
PS units plug into the APB ProDesk sound console chassis.
IEC 60320 C13 AC inlet connection
Universal AC input voltage and frequency 100-240V 50/60Hz
Power Factor corrected AC input
Multiple regulated DC outputs:
+/- 18V DC @ 10A audio system
+15V DC @ 4.5A fans, lights, control system
+48V DC @ 0.5A input phantom power
Multiple protection systems:
AC input primary fuse, PCB mounted wire ended 20x5mm T8A
AC input in-rush limiting by relay and thermistor
AC input overvoltage MOV clamp
AC input dual series RFI chokes
DC output short circuit protection
DC output overvoltage protection
Automatic safety interlock prevents operation outside the console
Automatic shut-down in the event of elevated & unsafe internal temperature
Approvals:
USA Recognized power supply with ETL marking and listing
USA and Canada UL60065 7
th
Edition Electrical Safety
Europe EN60065 7
th
Edition Electrical Safety
Europe EN55103-1 Emissions (Pending)
USA FCC Part 15 Emissions (Pending)
Principal Of Operation
Power is drawn from the AC line and rectified. A switching device maintains the voltage on the internal DC
reservoir capacitor within a controlled range. The main transformer operates at approximately 100kHz and
steps down the primary power from about 400VDC to the low voltages required for the four regulated
outputs. The high frequency low voltage AC is rectified to generate the DC output voltages required. The +/-
18V DC supplies for the audio system are coupled so that the voltage of the negative supply is a precise
mirror of the positive voltage. The 48V DC supply is further processed using a three-terminal regulator to
improve noise and regulation qualities. All DC outputs are short-circuit protected, the +/-18V supplies are
controlled as a pair.