John A. DeDad

John A.
Determining DC motor rotation direction
While DC motors are applied mostly in special applications, knowing how to properly connect them is important to their required performance.You're about
Determining Motor Rotation Direction
While being a fundamental motor installation task, determining rotation direction is critical to the coupled load's operation.
What do electrical professionals really want?
A few months ago, we had the opportunity to gather together a group of electrical professionals to speak their minds and vent their frustrations on the
Maintaining low voltage power circuit breakers. 1
Believe it or not, air circuit breaker problems are the cause of almost 20% of electrical power system failures, according to a survey conducted by the
The basics of solid state devices.
A device frequently used in solid-state equipment such as lighting dimmers and variable speed controls is the silicon controlled rectifier (SCR). As shown
Electric 95 show highlights important trends.
New computer-based control systems allow easy monitoring and remote control while new wire management systems make installation a snap.As we all know,
The basics of solid-state devices.
Another workhorse of electronic equipment is the transistor. There are two types of transistors commonly used: PNP and NPN. As shown in Fig. 1, the PNP
The basics of solid state devices
Many industrial control systems use a device that changes one form of energy to another; this device is called a transducer. Typical transducers convert
Electric West 95 show highlights melding of technologies.
Power distribution monitoring systems are enhanced and now include power quality analysis capabilities and unlimited trip curve shaping.What's new in
Electrical Testing Feed

EC&M Webinars
Sep 10, 2015

ON DEMAND: An Effective Electrical Safety Program that Delivers

This hour-long webinar will cover the wording in various IEEE recommended practices, NFPA 70E and ANSI Z10 with an emphasis on what it means in terms of designing, implementing and managing an Effective Electrical Safety Program....More
Jul 21, 2015

ON DEMAND: Mitigation Methods for Arc Flash Hazards - Enhancing Personal Safety

The energy released during an arc flash event can result in severe damage to personnel, equipment, and property. While there are solutions which seek to improve the protection for each, this program will focus on personnel....More
EC&M Learning Center

Connect With Us

Sponsored Introduction Continue on to (or wait seconds) ×