UV Source Power Supply UV40A-PS

For controlling the UV source UV40A1 in ultraviolet photoelectron spectroscopy (UPS) applications.



Prevac are a world leader in the design and production of analytical and deposit scientific and research equipment. Their systems operate in a high and ultra high vacuum environment. They design and construct UHV and HV systems fully adapted to the individual requirements of research projects and industrial applications.


The source can be automatically ignited directly from the power supply or manually on the source via a piezo-electric igniter. All adjustable parameters are clearly displayed on the large front-panel TFT and precisely controlled via digital encoders. The unit also features a built in timer and automatic standby mode. The UV40A-PS is supplied as a full width 19″ rack mounting unit (3U height). Easy firmware update via USB port. Unit can be remotely controlled via RS232/485 or Ethernet interfaces. Autosave function for saving your parameters/unit pre-set and applying them automatically after restart.

Technical data

Supply voltage 100 – 120 VAC/200 – 240 VAC,
50/60 Hz (power consumption max 800 W)
Output Power 300 W
Discharge voltage (Usource) 200 – 1000 V, resolution 10V, ripple < 0.5 Vpp
Discharge current (Iemit) 5 – 300 mA, resolution 1 mA
Vacuum measurement (optional) CTR90, TTR91, TTR211, PTR225, PTR90, ITR90, ITR100, Baratron, ANALOG IN, MKS937A, PG105, MG13/14, PKR251/360/361, PCR280, ATMION
Communication interface RS232/485, Ethernet
Communication protocol MODBUS-TCP
User Interface 7” TFT display with touchscreen, digital encoder
Interface languages English, German, Polish
Dimensions 448.8 x 132.5 x 435 mm (W x H x D), 19″ rack mountable
Weight (approx.) 9.3 kg


The UV40A-PS power supply controls the UV40A1 UV Source in ultraviolet photoelectron spectroscopy (UPS) applications.



Instruments with Electronics Brochure

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  • Software control (Version Pro, Extended or Library Module)
  • Analog I/O card for vacuum measurement (1 gauge)

Service Support

Comprehensive repairs and servicing

Annual Support Programs

Your metrology instrumentation is a major investment that is critical to your business operation and success. In today’s competitive climate, it is more important than ever to extend the functionality and peak performance of your metrology equipment years beyond the expiration of your factory warranty. CN Tech’s Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.

With over 20 years’ experience servicing and repairing you can be assured that your system is in safe hands. The independent services we offer include system relocation, maintenance visits, parts and consumables, and break down interventions.

CN Tech’s Support Programs are an economical way to guarantee optimal working condition:

  • Annual Preventive Maintenance
  • Priority Technical Assistance
  • Preferred Parts Availability
  • On-Site User Training
  • Remote Diagnostics
  • No surprise repair expense and much more!

Support Contact Example

An example of our service and support contracts are shown below:


Metrology & Instrumentation Annual Support Programs 2022/23

CN Tech's Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.

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