Wednesday, February 20, 2013

Custom High Voltage Power Supplies

HeNe Laser Power Supplies

VMI does a lot of custom high voltage power supply designs, but did you know we also offer standard products like the high performance, high reliability power supplies for Helium Neon laser applications?

These units are available in industry standard packages, covering the output power range of 5 to 12 watts. Standard DC inputs are 12 and 15VDC.

HeNe Laser Power Supply

Typical operating parameters are -

• Regulated Start Voltage ……… 10,000VDC.

• Run Voltage range ……………. 1,000 to 2,000VDC.

• Output current ………….……… 2 to 6mA.

• Output current ripple …….…… .1% RMS.

• Efficiency ……………….….…... 85%.

Custom designs and packaging are available.  Contact us to get started on a new design, or request a quote for standard power supplies.

Tuesday, February 19, 2013

VMI will be at APEC

VMI will be exhibiting at the APEC show March 17-21, 2013 in Long Beach, CA.  Look for us in Booth #330.

APEC is short for "Applied Power Electronics Conference & Expo".  A sampling of topics to be covered in the Technical Sessions include -

    5kV 1.5A High Voltage Diode - 1N6517LL
  • Inverter topologies
  • High Performance Developments in Circuits
  • Component Level Modeling
  • System Integration
  • LED Lighting
  • Renewal Energy Applications
  • Industrial & Utility Interfaces 

There is definitely something for everyone at the APEC show.

Margaret will be there, so stop by to discuss power supplies, high voltage diodes like the 1N6517LL, and all the good stuff happening at Voltage Multipliers Inc.

Monday, February 18, 2013

High Voltage Electrostatic Power Supplies

     Portable electrostatic power supplies tend to be application specific devices.  Each product has it’s own unique electrical and mechanical requirements.

     Generally, these products operate at voltage levels up to 100kVDC and higher, while requiring minimum package size for reduced weight and overall assembly volume.

     Voltage stress distribution can be quite different from other applications, and great care must be taken in the following areas:
  • Material selection
  • Internal spacing
  • Component layout
  • Transient component stress
  • Circuit immunity  
     Load line shaping and stored energy are important parameters that must be considered at the beginning of the design cycle in order to meet both performance and safety requirements.

VMI’s experience in the design and manufacture of electrostatic power supplies can help customers solve these and other challenges for their most demanding electrostatic power supply needs.

 Examples of Electrostatic Load Lines

VMI will be at Pittcon 2013

VMI will be exhibiting at the 2013 Pittcon show March 17-22 in Philadelphia, PA.  Look for us in booth #1517.  PIttcon is the premier conference and exposition on laboratory science equipment. 

The Pittcon show features more than 2,000 technical sessions on topics as varied as   Instrumental Analysis
  •  Chromatography
  •  Mass Spectrometry
  •  Portable Instrumentation
and Measurement Science applications such as
  • Nanotechnology
  • Biomedicine
  • Pharmaceuticals
  • Forensics
There's a lot happening at Pittcon.  You won't want to miss it.   VMI - Booth #1517.  See you there!

Thursday, February 7, 2013

VMI Standard & Custom High Voltage Power Supplies

High Voltage Power Supply

VMI Power Supplies

     Using our state-of-the-art diode products and extensive background in multiplier manufacturing, VMI has developed a large number of high voltage power supplies to meet the unique requirements of our customers.

Custom designs include applications for -
  • Portable CRTs
  • HeNe Lasers
  • Electron Beam Generators
  • Image Intensifiers
  • Low Power X-rays
  • Electrostatic Painting and Coating

and most other areas where reliable, low power high voltage is needed.
     Most power supplies manufactured by VMI are custom designed to meet the specific requirements of each customer.
     Custom features include unique packaging, miniaturization, high reliability, assembly integration and high performance.  
     All aspects of design and manufacture are carried out in-house to maintain control and repeatability of each process. Modern, cost-effective SMT manufacturing methods are utilized for improved reliability and smallest possible footprint. Computer controlled automatic testing and 100% burn in are standard procedures to insure that customer specifications are met.
     VMI’s main focus is centered in the milliwatt to 25 watt power range. Input power can be supplied from either a DC or AC source.
  • Typical inputs - 9 to 24VDC or 115/230VAC.
  • Output voltages - 1kVDC to 125kVDC.
Units are normally encapsulated for minimum size, though air insulated designs are also possible. Conductive housings can be incorporated for shielding purposes to reduce EMI and RFI. Remote control, remote programming, output monitoring, output status and self-protective circuitry are typical design features.
Contact VMI to discuss variations to these guidelines for your specific application.