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Power
Supplies and Current Reversal
We offer several different power supplies for the 3474
electromagnet; the Elgar switch mode, and the Danfysik
high stability linear.
 The
Elgar switch mode power supplies feature a stability
of 0.05% over 8 hours and they are available with an optional
IEEE-488 interface. Order part numbers:
Input: 187-242V, 62A, 47-63Hz ac, 3 phase
SGA100/150C-0AAA
- Power Supply, 100V, 150A, unipolar, 0.05% / 8hrs
SGA100/150C-1AAA
- Power Supply, 100V, 150A, unipolar, 0.05% / 8hrs, IEEE-488 interface
SGA100/200C-1AAA
- Power Supply, 100V, 200A, unipolar, 0.05% / 8hrs, IEEE-488 interface
Input: 190-253Vac, 47-63Hz ac, 3 phase
P83C-100200 - Power supply, 100V, 150A, unipolar, 0.05% / 8hrs
Input: 342-440V, 40A, 47-63Hz ac, 3 phase
SGA100/150D-0AAA
- Power
Supply, 100V, 150A, unipolar, 0.05% / 8hrs
SGA100/150D-1AAA
- Power
Supply, 100V, 150A, unipolar, 0.05% / 8hrs, IEEE-488 interface
 For
applications that require a high stability power supply,
we offer the Danfysik 853 series linear power supplies.
They feature a stability of 10ppm over 8 hours, 18 bit
current setting, 16 bit current readback, a built-in IEEE-488
interface, and an internal current reversal switch. Order
part number:
853-160A/80V - Power supply, 160A, 80V, unipolar.
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•
If
field reversal is required when using a Elgar series
supply, we offer the 5970-160 Current Reversal
Switch. This switch provides a safe way of reversing the
magnet's current under either manual or computer control
if the optional ADI-123-GUXCTS is installed. The
ADI also provides complete magnet current control and
readback of current and voltage.
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Magnet
Current Cables
We take the trouble out of connecting your magnet to the
power supply with a wide variety of pre-terminated cable
assemblies.
Power Supply direct to Magnet:
16900000 - Cable, Current & Interlock, 853-160A/80V
to 3474, 160A, 5m.
Power Supply to Reversing Switch:
16900--- - Cable, Current & Interlock, P83C-60110A
to 5970-160, 160A, 2m
Reversing Switch to Magnet:
16900--- - Cable, Current & Interlock, 5970-160
to 3474, 160A, 5m.
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Magnet
Poles and Axial Holes
GMW Offers a range of Pole Caps for the 3474 Electromagnet
from 25mm to 250mm. Order by part numbers as listed below:
17801717 - Pole Cap Pair, 25mm.
17801716 - Pole Cap Pair, 50mm.
17801715 - Pole Cap Pair, 75mm.
17801714 - Pole Cap Pair, 100mm.
17801713 - Pole Cap Pair, 150mm.
17801712 - Pole Cap Pair, 200mm.
17801711 - Pole Cap Pair, 250mm.
For optical experiments or other applications where an
axial hole in one or both poles is required, GMW can provide
the poles with the hole pre-drilled to your specifications.
Order part:
3473-AH - Axial hole in one pole, diameter to be
specified.
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Pole
Spacers
 Higher
field uniformity may be achieved with a set of precision
ground pole spacers. These spacers come three to a set
and include a delrin spacer ring assembly to accurately
locate the spacers. This ring assembly may be machined
to hold experiment fixtures, and may even include a set
of Bias Coils.
17900460-50 - Spacer Assemby, 50mm gap, for 200mm
poles.
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Bias
Coils
Bias Coils are used for two different applications
with electromagnets; obtaining a 'zero' field, or superimposing
a modulated signal on the field.
For achieving a zero field, the bias coils are used with
a fixed DC power supply, and set to generate a 'negative'
field when the main magnet power supply is stitched off.
The the main magnet power supply may then be programmed
to any field from zero upwards to the magnet power supply
maximum.
For field modulation, the bias coils may be used with
a low power bipolar power supply such as the Kepco BOP
100-1M. Note that our magnets are of a solid yoke design,
so the modulation frequency will be limited to less than
30Hz.
5485 - Bias and Modulation Coil pair.
EP030MX100-230 - DC Power Supply for 5484 Bias Coil
pair, 0-30V, 1A.
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Mounting
and Motor Drives
We are pleased to offer several mounting options for the
3473 Electromanget. They range from 45° Angle Brackets,
Horizontal and Vertical Mounting Brackets, and Rolling,
Rotating, or Rolling and rotating bases. A guide rail
is also available to guide the rolling bases between magnet
test stations.
17802690 Vertical Mount Bracket Pair, for 3474.
17801730 45° Mounting Bracket pair for 3474
11801800 Rolling base, for 3474.
11900990 Rotating base, for 3474.
11900980 Rolling and Rotating Base for 3474.
We have also designed a motorization kit for the rotating
base. This item includes all required hardware to add
a computer controlled motor assembly to the rotating base.
It features variable speed, limit switches, a 'home' switch,
and a clutch to help prevent the system from being damaged
should the mechanism jam. Order part:
3474-MRD - Motorized Rotating Drive for Rotating
Base.
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Cabinets
 RC-351930
Optima 19" EIA rack cabinet. This handsome half-height
19" rack cabinet provides ample space for your power
supply, reversing switch, and other instrumentation.
It is two-tone gray, and is supplied with lift off side
panels, castors, and a door mounted on to the back. The
door includes two line powered cooling fans to help draw
hot air out of the rack. It does not include filler panels
and support angles.
Accessories:
P-0119 - Filler panel, 1U, light gray.
P-0319 - Filler panel, 2U, light gray.
P-0519 - Filler panel, 3U, light gray.
P-0719 - Filler panel, 4U, light gray.
P-0819 - Filler panel, 5U, light gray.
SA-30 - Support Angle Pair.
HW-1 - Hardware kit, screws and washers, set of
100.
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Software and PC Interface Cards
LVPTMPS - Driver for SGA power supplies with
IEEE-488 interface.
LVKCMPS - Driver for Kepco power supplies with IEEE-488
interface.
LVMCTRL - Driver for complete closed-loop control
of magnet system, power supply, and teslameter drivers.
* Note: The above listed drivers require LabView 8.21 or newer version.
776671-09 - National Instruments LabVIEW Base System for Windows with 1 Yr Service (English).
 778032-01
- National Instruments IEEE-488 PC interface card,
PCI bus.
Last updated on:
10 March, 2008
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