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Safe
SafeSafe
Safety Rules
ty Rulesty Rules
ty Rules
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General
GeneralGeneral
General
- This equipment can be operated by anyone with basic knowledge of
Electronics and understands the danger of AC and especially DC voltages
- WARNING: RISK OF ELECTRICAL SHOCK
WARNING: RISK OF ELECTRICAL SHOCK WARNING: RISK OF ELECTRICAL SHOCK
WARNING: RISK OF ELECTRICAL SHOCK
- Dangerous voltages are present during operation The DC-output voltage
may be more than 2 x 60 Volt (120 Volt DC total)
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Installation
InstallationInstallation
Installation
- The amplifier power supply is intended to be used in normal domestic
situations
- Do not use the power supply in an excessively humid environment or near
water
- The unit must be placed in a sufficiently ventilated area; the ambient
temperature should not exceed 30°C
- Do not connect any equipment other than the intended audio amplifiers to
the power supply
- All hazardous voltages may never be accidentally touched
All hazardous voltages may never be accidentally touchedAll hazardous voltages may never be accidentally touched
All hazardous voltages may never be accidentally touched after
after after
after
installation and during use
installation and during useinstallation and during use
installation and during use
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FF
Functional explanation
unctional explanationunctional explanation
unctional explanation
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The Principles of Operation
The Principles of OperationThe Principles of Operation
The Principles of Operation
The UcD Supply HG Mono converts the AC voltage into suitable DC voltage for
powering UcD amplifiers
The typical AC input voltage depends on the DC voltage requirements of the
connected amplifier and must come from a double insulation class-2 transformer
for safety reasons This transformer must be primary fused In case of high inrush
currents a current limiter PCB is recommended
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Normal Conditions
Normal ConditionsNormal Conditions
Normal Conditions
The DC output voltage will vary depending on output power and transformer and
should not exceed the limits of the connected amplifier for normal use
Typical AC-input voltage for UcD180 Amplifier: 2 x 31 Vac
Typical AC-input voltage for UcD400 Amplifier: 2 x 42 Vac
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Functional description
Functional descriptionFunctional description
Functional description
See diagram last page
The main input voltages from the transformer are wired to Faston connectors
J7/J8/J9 (J22)
If desired, auxiliary supply can be connected to J12/J13/J14 This low voltage,
low power connection can be used for pre-amplifier use Maximum current:
100 mA
A LED may be connected as POWER-ON indicator
The UcD Supply has DC-protection circuitry thus allowing the amplifier to shut
down quickly after such an event
The amplifier can be controlled switched on/off by the UcD supply; completely
‘pop-free’
Two fuses are mounted to protect in case of over current in the main power
circuit These fuses must be <=4 Amp/250Volt fast type Last, but not least, 2x
Slit Foil Capacitors are fitted for optimal audio performance
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SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
Type : UcD Supply HG Mono
AC input voltage : Typical 2 x 42 Vac
Input frequency : 50/60 Hz
DC output voltage : 2 x 57 Vdc (at typical input voltage)
Main PCB fuses F1, F2 : maximum 4 Amp fast / 250V - 5x20mm
Auxiliary AC-supply : Typical 14-0-14 Vac (between 11 and 16 vac)
Auxiliary DC-output : +12V/0V/-12V maximum current 100 mA
GENERAL DESIGN CRITERIA
GENERAL DESIGN CRITERIAGENERAL DESIGN CRITERIA
GENERAL DESIGN CRITERIA
Humidity : 95% non-condensing
Safety : EN 60065
EMC : EN 55103
