The Model 643 is a linear, bipolar, true 4-quadrant DC current source for electromagnet control, delivering ±70 A at ±35 V and 2450 W nominal power. It provides 0.1 mA resolution via internal programming and supports analog, IEEE-488, and USB interfaces, with USB emulating RS-232C at 57,600 baud. Enclosed in a 7 U, 19-inch rack-mount chassis measuring 483 mm W × 310 mm H × 572 mm D and weighing 74 kg, it requires 5.7 L/min cooling water at 34-552 kPa. Built-in protection includes short circuit, overcurrent, overvoltage, and overtemperature fault detection, displayed on an 8-line vacuum fluorescent panel. Output modulation is rated up to 0.17 Hz at ±70 A. The device meets CE mark compliance for low voltage (EN61010-3) and EMC (EN55022-1).
The Model 643 electromagnet power supply is a linear, bipolar current source providing true 4-quadrant output, eliminating the need for external switching or operator intervention to reverse current polarity. The Model 643 is capable of supplying ±70 A/±35 V to a nominal 0.5 W, 0.5 H load, and the output can be modulated from an external source to frequencies up to 0.17 Hz at ±70 A. Internally programmed output provides 20-bit resolution, while externally programmed output provides unlimited resolution.
The compact, low noise design of the Model 643 makes it the ideal supply for use in laboratory settings. When combined with a Lake Shore EM4 4-inch electromagnet and Model 475 DSP gaussmeter, the Model 643 provides a versatile field control system ideal for a wide range of user defined applications. These include but are not limited to magneto-optical, magnetic hysteresis and susceptibility, and Hall effect measurements, as well as in-line annealing.
| Lake Shore Cryotronics, Inc. | |
|---|---|
| Product Category | Power Supplies |
| Product Number | Model 643 |
| Product Name | Electromagnet Power Supply |
| Type | DC Power Supply; Electromagnet Power Supply |
