3B SCIENTIFIC PHYSICS 1003561 Manual Del Usuario página 6

• Before making any connections, check the
experiment leads for damaged insulation
and exposed wires.
• Replace a faulty fuse only with one matching
the specifications stated at the rear of the
housing.
• Disconnect the equipment from the mains
before replacing a fuse.
• Never short the fuse or the fuse holder.
• Never cover the air vents in the housing.
This is necessary in order to ensure suffi-
cient circulation of air required for cooling
the internal components of the equipment.
• The equipment
opened/repaired by qualified and trained
personnel.
2. Description
The 0-20 V/5 A AC/DC power supply unit pro-
vides a continuous DC voltage which can be
regulated between 0 V and 20 V at a current of
5 A. The unit is also equipped with a voltage and
current limiting system that can automatically
switch from one mode to the other and which
makes the equipment proof against any pro-
longed short circuits. The AC voltage can be
selected to any of 8 levels: the output is pro-
tected by an overload protective switch.
The AC and DC outputs are galvanically isolated
from one another. A temperature-controlled fan
protects the equipment from overheating.
The apparatus 1003561 is for operation with a
mains voltage of 115 V (±10%), and the unit
1003562 is for operation with a mains voltage of
230 V (±10%).
3. Technical data
DC voltage output:
Output voltage: 0-20 V, electronically regu-
lated, continuously adjustable
Load capacity: 0-5 A, protected against
short circuit
Ripple voltage U: < 10 mV
Connections: 4-mm safety connectors
AC voltage output:
Output voltage: 2 V, 4 V, 6 V, 8 V, 10 V,
12 V, 15 V, 20 V
Load capacity: max. 5 A, protected by
overload protection switch
Connections: 4-mm safety connectors
may only be
rms
Miscellaneous data:
Mains voltage:
Primary fuse:
Dimensions:
Weight:
4. Operation
4.1 Operation as a DC voltage source:
• Set the current and voltage regulators to the
0 position (turn the knob fully to the left).
• If necessary, short the output.
• Set the current regulator to the desired
maximum current.
• Remove the short and connect the load to
the output.
• Set the DC voltage regulator to the desired
DC voltage.
4.2 Operation as a DC current source:
• Set the current and voltage regulators to the
0 position (turn the knob fully to the left).
• Turn the DC voltage regulator knob to its
maximum value, or set the desired maxi-
mum voltage.
• Connect the load to the output.
• Turn the DC voltage regulator knob to its
maximum value.
• Set the DC current regulator to the desired
DC current.
4.3 Operation as a source of AC voltage:
• Connect the load to the AC current output.
• Turn the switch to the desired AC voltage.
5.1 Changing the primary fuse:
Disconnect the plug from the mains supply.
• Remove the outer casings of the housing.
• Replace the faulty fuse with a new one.
• Assemble the outer casings of the housing
in reverse order.
5.2 Overload protection switch:
If the overload protection switch has tripped:
• Disconnect the cause of the overload.
• Press the overload protection switch.
2
See rear of equipment
housing
See rear of equipment
housing
3
235 × 175 × 245 mm
8 kg approx.
5. Fuse