Product News: Electrical Equipment & Systems

Power Supply supports scanning electron microscopes.

Press Release Summary:

Power Supply supports scanning electron microscopes.

Jan 17, 2013 - Housed in 25 x 12 x 20 cm enclosure, Model 3603 comprises 3 power supplies used by SEMs and inspection systems: -30 kV at 330 µA accelerator, -1 kV at 25 µA Wehnelt, and 5 Vdc at 3 A floating filament. Filament and Wehnelt voltages are floating on accelerator voltage. All 3 are remotely programmable via RS-232 or USB data port and connected to SEM through 3-pin Federal connector. Plug-in terminal block connects 24 Vdc input power, external safety interlock, and HV On status bit.

Computer Power Supply Inc. - Portland, OR

Original Press Release

CPS Introduces -30kV SEM Power Supply

Press release date: Jan 14, 2013

Portland, OR – Computer Power Supply (CPS) a world-leading manufacturer of high-voltage power supplies, announced a new -30kV Scanning Electron Microscope (SEM) Power Supply, Model 3603. Within this compact 25 x 12 x 20 cm enclosure are three common power supplies used by scanning electron microscopes and inspection systems.

The filament and Wehnelt voltages are floating on the accelerator voltage. The Wehnelt voltage is derived from the floating precision bias supply. All three are remotely programmable via an RS-232 or USB data port and connected to a SEM through a conventional 3-pin Federal connector. A plug-in terminal block connects 24VDC input power, an external safety interlock and a HV On status bit.

The Model 3603 has two status lights which show serial communication activity and a heartbeat lamp that indicates the Model 3603’s processor is active.

CPS provides a C-language demo program which allows controlling all supplies and reports communication activity. It displays the set-point of each supply, the actual measured outputs and an internal temperature sensor.

OEM quantity 2-9 pricing for the Model 3603 is $3,405. Volume discounts are also available.

For more information go to

ABOUT Computer Power Supply
Computer Power Supply specializes in high-precision, high voltage power supplies used for focused electron beam, scanning electron microscopes, electrophoresis and many other applications. Our high voltage power supplies feature exceptionally low drift, ripple and temperature coefficients. For more information, or to speak to an engineer regarding a custom design, visit, or email