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How To Use A Digital Multimeter

A digital multimeter is used to make various electrical measurements, such as AC and DC voltage, AC and DC current, and resistance. It is called a multimeter because it combines… Read more

Feb 23, 2011 | Metering

How to use digital multimeter

Protection Relay – ANSI Standards

In the design of electrical power systems, the ANSI Standard Device Numbers denote what features a protective device supports (such as a relay or circuit breaker). These types of devices… Read more

Feb 22, 2011 | Energy and Power

ANSI codes for protection relays

What Is Modulation?

Modulation is the use of one electrical signal to “control” a primary variable of another. For example, if an audio signal voltage is used to control the “amplitude” of a… Read more

Feb 20, 2011 | Electronics

Modulation - addition of information (or the signal) to an electronic or optical signal carrier

IP Protection Degree (IEC 60529) Explained

The protection of enclosures against ingress of dirt or against the ingress of water is defined in IEC529 (BSEN60529:1991). Conversely, an enclosure which protects equipment against ingress of particles will… Read more

Feb 19, 2011 | IEC Standards

IP Protection Degree (IEC 60529) Explained

Technology Innovation Is Everybody’s Business!

For close to 10,000 years, science and technology have been at the heart of economic growth and social prosperity. From the agricultural revolution to the information revolution, advances in society… Read more

Feb 18, 2011 | Energy and Power

Technology Innovation

What Light Source To Choose?

One of the first decisions in the design of a good lighting system is the choice of a light source. A number of light sources are available, each with its… Read more

Feb 17, 2011 | Lighting

Light Sources and Lamp Characteristics


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