Lake Shore’s new Model 642 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 the current polarity. Available in Summer 2006, the Model 642 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 full output. Internally programmed output provides 20-bit resolution, while externally programmed output provides unlimited resolution.

 

The compact, low noise design of the Model 642 makes it ideal for use in laboratory settings. The current ripple is just 5 mA RMA (0.007%) at full output into a nominal load. When combined with a Lake Shore Model EM4-HVA 4-inch electromagnet and a Model 475 DSP gaussmeter, the Model 642 provides a versatile field control platform system 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.

 

For more information on the Model 642 bipolar electromagnet power supply, contact:

Lake Shore Cryotronics, Inc., 575 McCorkle Boulevard, Westerville, OH 43082;

Tel: (614) 891-2244; Fax: (614) 818-1600; E-mail: info@lakeshore.com.