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Power quality specialists

Power Quality Specialists
We specialize in equipment for electric power quality immunity, and we provide third-party test and certification services for SEMI F47, SEMI E6, SEMI S23, IEC 61000-4-11, IEC 61000-4-30, IEC 61000-4-34, and IEEE 1100.

Disturbances on electric power mains, like voltage sag or voltage dip events, can disrupt or damage sensitive electronic equipment. We fix these problems.

SEMI F47, SEMI E6, SEMI S23, IEC 61000-4-11, IEC 61000-4-30, IEC 61000-4-34 and IEEE 1100

SEMI F47, SEMI E6, IEC 61000-4-11, IEC 61000-4-34 and IEEE 1100
We are the world-wide leader in SEMI F47, SEMI E6, SEMI S23, IEC 61000-4-11 and 61000-4-34, IEC 61000-4-30, Samsung Power Vaccine, and IEEE 1100, the semiconductor industry voltage sag standards for power disturbance immunity.

Voltage sag / dip / swell generators

Voltage sag / dip / swell generators
Power disturbance generators take good, clean electric power, and foul it up.

We build and sell power disturbance generators, with portable instruments rated at up to 480V, 3-phase, 200 amps. Sometimes called a sag generator or a dip generator, these instruments create reliable, repeatable voltage dip and voltage swell events.

Power Quality Relays

Power Quality Relays
We manufacture power quality sensors for intelligent industrial equipment. The typical return-on-investment for these inexpensive devices is measured in days. They capture voltage sag and voltage dip events, voltage swells, and high-frequency impulses, and have standards like IEEE 1100 and SEMI F47 built-in.

FREE Power Quality Teaching Toy

FREE Power Quality Teaching Toy
Now you can download Edition 3.0 of Alex McEachern's Power Quality Teaching Toy.
English - Deutsch - Español - Français - Português - Italiano - Polski - Svenska - Româna
The program is FREE, so no support is available. Sorry...
This is an ideal program for engineers, and engineering students, who want to get an intuitive feel for power quality issues. Alex uses it in his power quality seminars around the world. It's a great toy - give it a try!
Download the Power Quality Teaching Toy

Upcoming  Seminars

Energy Conservation in the Semiconductor Industry
Energy Conservation in the Semiconductor Industry
Semicon 2008
San Francisco, CA. USA
July 15 2008
2008 Power Quality Applications 2008 Power Quality Applications Conference and Exhibition
Cleveland, Ohio
August 04-06 2008
Power Electronics and Motion Control Conference 2008
Power Electronics and Motion Control Conference 2008
Poznan, Poland
September 01-03 2008
Remote 2008 Conference and Expo Remote 2008 Conference and Expo
Atlanta, Georgia
November 05-06 2008
Power Quality Tutorial Power Quality Tutorial
TENCON 2008

Hyderabad, India
November 18-21 2008

Calibration standards at PSL

Calibration standards at PSL
PSL's ultimate resistance standard:
0.09999863 ohms
For calibration, PSL maintains two ultra-accurate references: a 0.1 ohm resistor (actually 0.09999863 ohms), and a 1 volt source (actually 1.00000096 volts).
We use these references individually to calibrate our calibration instruments, and we combine them to generate reference currents.

Our references are periodically calibrated at NIST directly against the United States National Working Standards.
For calibrating higher AC voltages -- one of our particular interests -- we use a calibration-grade ratio transformer to bring the unknown voltage into our calibration range.
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