3B SCIENTIFIC U8521400 Lembar Instruksi - Halaman 2
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Halaman Cetak2. Description
The DC power supply 450 V is designed to supply
power for electrostatics experiments, in particular
experiments using an electrometer (U8531408).
It possesses two DC outputs and an AC output, all of
which are protected against short circuits.
The power supply with the item number U8521400-
115 is for operation with a mains voltage of 115 V
(±10%), and the transformer with the item number
U8521400-230 unit is for operation with a mains
voltage of 230 V (±10%).
3. Technical data
Mains voltage:
Fuses:
Output 1:
Voltage:
Max. current:
Internal resistance: 1 MΩ
Output 2:
Voltage:
Max. current:
Output 3:
Voltage:
Max. current:
Terminals:
Dimensions:
Weight:
4. Operation
4.1 General information
•
The AC and DC outputs cannot be used at the
same time
•
Before connecting the plug to the power supply,
set the voltage selector switch to zero.
4.2 Obtaining an AC voltage
•
Connect the load to the AC output sockets (3).
•
Set the voltage selector switch (3) to give the
required voltage; if necessary connect a voltme-
ter in parallel with the load.
see rear of housing 230/115
V AC, 50/60 Hz, 10 VA
Internal quick-blow fuses
5x20, 250 V AC,
T800 mA for 115 V AC
T400 mA for 230 V AC
0 – 450 V DC , continuously
adjustable
10 µA
1.2 – 12 V DC, continuously
adjustable
100 mA
0 – 12 V AC, continuously
adjustable
10 mA
4 mm safety sockets
250x100x160 mm³ approx.
0.8 kg approx.
4.3 Obtaining a DC voltage
•
Connect the load to the DC output sockets (1 or 2).
•
Set the voltage selector switch (1 or ) to give the
required voltage; if necessary connect a voltme-
ter in parallel with the load.
5. Sample experiments
5.1 External photoelectric effect (Hallwachs ef-
fect)
Equipment
1 DC Power Supply 450 V (230 V, 50/60 Hz)
1 Control Unit for Spectrum Lamps (230 V, 50/60 Hz)
1 Electrometer (230 V, 50/60 Hz)
or
1 DC Power Supply 450 V (115 V, 50/60 Hz)
1 Control Unit for Spectrum Lamps 115 V, 50/60 Hz)
1 Electrometer (115 V, 50/60 Hz)
1 High-Pressure Mercury Vapour Lamp
1 Grid electrode, 1 Zinc electrode,
1 Metal rod with 4-mm drilled hole
1 SK plug-in resistor 10 GΩ
from Electrometer Accessories
1 Multimeter AM50
1 Tripod Stand, 150 mm
1 Stainless Steel Rod, 250 mm
1 Universal Clamp
Connection leads
5.2 Recording equipotential lines of electric
fields
Equipment
1 DC Power Supply 450 V (230 V, 50/60 Hz)
or
1 DC Power Supply 450 V (115 V, 50/60 Hz)
1 Electrolyte Trough
1 Multimeter AM50
Connection leads
3
400 cm
distilled water
2
U8521400-230
U21905-230
U8531408-230
U8521400-115
U21905-115
U8531408-115
U8473155
U8531420
U17450
U13270
U15001
U13255
U8521400-230
U8521400-115
U51001
U17450