Lake Shore offer a portfolio of power supplies for the laboratory. Ranging from small benchtop sources - for providing stable currents and/or voltages in a number of applications, and heavy-duty rack and floor-standing units to power electromagnets.
AC/DC Power Supply
Model 155 Precision I/V Source
The Model 155 power supplies have been designed for people by offering unprecedented simplicity and intuitive operation, yet built for science with premium performance to the fore.
Bipolar, 4-quadrant I/V source
DC and AC modes supported up to 100 kHz
Full scale ranges from 10 mV to 100 V (1 µA to 100 mA)
0.001% programming resolution
Low peak to peak noise: from 1 µV at 10 mV full scale
Manual and autorange function
Smartphone-based touchscreen user interface
The Model 155 MeasureReady™ precision I/V source is ideal for demanding scientific applications requiring a precise low-noise supply of current or voltage, for example electronic material characterisation.
Two models are available; a DC only version, and the 155-AC model that can supply up to 1 W from DC to 100 kHz over a broad output range. These power supplies deliver a solid foundation for I/V curve, Hall effect, and other fundamental measurements.
The clutter-free touch display with a unique TiltView™ screen presents a natural and engaging user interface. No confusing buttons or long learning curves make the Model 155 as easy to use as a smartphone. With similar connectivity - Bluetooth, Wi-Fi, USB, plus LAN - it offers convenient remote operation via LabVIEW™, a custom PC interface, or mobile app.
DC Power Supply
Model 121 Programmable DC Current Source
7 decades of output current, selectable in 13 steps
Programmable current output, 100 nA to 100 mA
Large 3-digit LED display
Simple user interface
Current reversal feature
USB interface enables integration with automated test systems
DIN panel-mountable package, detachable output terminal block
The Model 121 programmable DC current source is a CE-marked precision instrument suitable for bench-top use or panel-mounted operation in labs, test facilities, and manufacturing environments. It provides a low-noise, highly stable source of current up to 100 mA, with convenient manual selection through 13 pre-set output levels, each representing a ten-fold change in power when attached to a resistive load. A "user" setting allows the current output to be defined anywhere within the operating range of the unit, from 100 nA to 100 mA.
Programmable operation is also possible via the instrument's USB computer interface, through which the Model 121 can be commanded to output any desired current at any time. Thus, application-specific test currents can be driven from an external PC.
The instrument operates at 5 VDC, and power is supplied by the external AC wall-mount supply provided with the standard Model 121. The supply will automatically conform to any AC line voltage ranging from 100 VAC to 240 VAC, 50 or 60 Hz.
Electromagnet Power Supplies
Model 643 Electromagnet Power Supply
Bipolar, linear, true 4-quadrant output
±70 A/±35 V, 2.5 kW
Can be modulated to frequencies up to 0.17 Hz at ±70 A
0.1 mA of programmed current resolution
Analogue programming and IEEE-488 and RS-232C interfaces
Built-in fault protection
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 Ω, 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.
Model 648 Electromagnet Power Supply
Bipolar, linear, 4-quadrant output
±135 A/±75 V, 9.1 kW
Can be modulated to frequencies up to 0.17 Hz at ±135 A
1 mA of programmed current resolution
Analogue programming and IEEE-488 and USB interfaces
Built-in fault protection
The Model 648 electromagnet power supply is a robust, fault-tolerant 9 kW supply optimised for powering large 7 or 10-inch research electromagnets. It is specifically designed for high precision laboratory use requiring extremely low electrical noise.
The linear design removes undesirable higher frequency noise typical of switch mode power supplies. Eliminating the need for external switching or operator intervention to reverse current polarity, the Model 648 uses convenient bipolar, 4-quadrant operation.
It is capable of supplying ±135 A/±75 V to a nominal 0.5 Ω, 0.57 H load, and the output can be modulated from an external source to frequencies up to 0.17 Hz at ±135 A. The Model 648 is built to last with a rugged design, integrated fault protection, and a simple, clean interior electronic design.
This robust power supply is developed to minimise downtime. It uses worry-free water cooling for quiet efficient operation compared to air-cooled power supplies. The seamless water lines only have external junctions, eliminating internal water leaks. In addition, safety interlocks ensure that cooling water is always flowing to the supply while operating. Magnet water can also be interlocked into the power supply if desired. Internal software controls manage water usage intelligently.
When combined with a Lake Shore EM7 seven inch electromagnet and Model 475 DSP gaussmeter, the Model 648 forms a versatile electromagnet characterisation system ideal for a wide range of user defined applications, including magneto-optical studies, magnetic hysteresis tests, susceptibility measurements, Hall effect studies, spin magnetic resonance demonstrations, and biological tests.