3473 Dipole, 150mm

We offer several different power supplies for the 3472 electromagnet; the Ametek switch mode, and the Danfysik high stability linear.

The Ametek 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, 21A, 47-63Hz ac, 3 phase
SGA60/83C-0AAA - Power supply, 60V, 83A, unipolar, 0.05% / 8hrs.
SGA60/83C-1AAA - Power Supply, 60V, 83A, unipolar, 0.05% / 8hrs, IEEE-488 interface

Input: 342-440V, 14A, 47-63Hz ac, 3 phase
SGA60/83D-0AAA - Power Supply, 60V, 83A, unipolar, 0.05% / 8hrs
SGA60/83D-1AAA - Power Supply, 60V, 83A, unipolar, 0.05% / 8hrs, IEEE-488 interface

For applications that require a bipolar power supply, we offer the Kepco BOP series. They feature stability of 0.02% over 8 hours, and an optional IEEE-488 interface may be installed either by GMW, or by the user at a later date. The 5403 requires two of the Kepco BOP 20V, 20A, supplies wired in paralllel to acheive 20V, 40A.
Order part number:
BOP 20-20M Power supply, 20V, 20A, bipolar.
BIT-4886 IEEE-488 interface for Kepco BOP power supplies, 16-bit.

For applications that require a bipolar power supply, we offer the Kepco BOP series. They feature stability of 0.02% over 8 hours, and an optional IEEE-488 interface may be installed either by GMW, or by the user at a later date. The 5403 requires two of the Kepco BOP 20V, 20A, supplies wired in paralllel to acheive 20V, 40A.
Order part number:
BOP 20-20M Power supply, 20V, 20A, bipolar.
BIT-4886 IEEE-488 interface for Kepco BOP power supplies, 16-bit.

For applications that require a high stability power supply, we offer the Danfysik 858 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:
858-70A/65V - Power supply, 65V, 70A, unipolar.

If field reversal is required when using a a unipolar Power Supply, we offer the 5971-160 Current Reversal Switch. This Switch provides a safe way of reversing the magnets current under either manual or computer control. The USB Interface also provides control fo the Power Supply current, and readback of the Power Supply current and voltage. It will also provide field readback from a Senis Field Transducer if installed.

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:
16907-0052-2 - Cable, Current & Interlock, 2 x BOP 20-20D to 3473, 60A, 5m.
16907-0052-0 - Cable, Current & Interlock, SGA60/83C-0AAA to 3473, 80A, 5m.
16907-0052-1 - Cable, Current & Interlock, 858-70A/65V to 3473, 80A, 5m.

Power Supply to Reversing Switch:
16907-0062-1 - Cable, Current & Interlock, SGA60/83C-0AAA to 5971-160, 80A, 2m

Reversing Switch to Magnet:
16907-0052-3 - Cable, Current & Interlock, 5971-160 to 3473, 80A, 5m.

GMW Offers a range of Pole Caps for the 3473 Electromagnet from 25mm to 150mm. Order by part numbers as listed below:

17801355 - Single Pole Cap, 25mm.
17801354 - Single Pole Cap, 50mm.
17801353 - Single Pole Cap, 75mm.
17801352 - Single Pole Cap, 100mm.
17801351 - Single Pole Cap, 150mm.

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.

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.

11900400 - Spacer Assemby, for 100mm poles.
11900410 - Spacer Assemby, for 100mm poles, with bias coils.
11900420 - Spacer Assemby, for 150mm poles.
11900430 - Spacer Assemby, for 150mm poles, with 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 100-1D. Note that our magnets are of a solid yoke design, so the modulation frequency will be limited to less than 30Hz.

5484 - Bias and Modulation Coil pair.
11900202 - Drawing of a single coil for the 5484 Bias Coil pair.
EP030MX100-230 - DC Power Supply for 5484 Bias Coil pair, 0-30V, 1A.

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.

17803180 - Vertical Mount Bracket Pair, for 3473.
17900170 - Horizontal Mount Bracket Pair, for 3473.
17800520 - 45° Mounting Bracket Pair for 3472 and 3473.
11803170 - Rolling Base for 5403, 3472& 3473.
11802090 - Rotating Base for 5403, 3472& 3473.
11803430 - Rolling and Rotating Base for 5403, 3472& 3473.
3473-GR - Guide Rail for Rolling Base.
3473-GM - Gimbal Mount allowing 0° to 360° rotation about a horizontal axis.

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:
3473-MRD - Motorized Rotating Drive for Rotating Base.

GMW-RC-1920 GMW 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.

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 (gaussmeter) drivers.

* Note: The above listed drivers require LabVIEW 8.21 or newer version.

776670-09 - National Instruments LabVIEW Full System for Windows with 1 Yr Service (English).
778927-01- USB-GPIB Interface for Windows XP/Vista/7/8/10.