The basics of transformers
Nov 1, 1995, DeDad, John A.
A transformer is an energy coupling device that takes electrical energy at one voltage (from its source) and transforms it to another voltage. The new...
The basics of autotransformers.
Oct 1, 1995, DeDad, John A.
An autotransformer is a transformer having part of its winding included in both the input and output circuit. A simple autotransformer connection is shown...
Knowing the basics of PLCs
Oct 1, 1995, Hee, Robert B.
Programmable logic controllers provide dependable, high-speed control and monitoring demanded by a wide variety of automated applications.Programmable...
The basics of solid state devices
Sep 1, 1995,
An LED generates light by using its semiconductor materials. Basically, the presence of electrical current forces the electrons and holes within the P-...
The basics of solid state devices.
Aug 1, 1995, DeDad, John A.
A device frequently used in solid-state equipment such as lighting dimmers and variable speed controls is the silicon controlled rectifier (SCR). As shown...
Understanding variable frequency drives.
Jul 1, 1995, Turkel, Solomon S.
Here are basic guidelines revealing how to troubleshoot variable frequency drives and get them up and running fast.The trick to troubleshooting variable...
The basics of solid-state devices.
Jul 1, 1995, DeDad, John A.
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...
An introduction to the decibel.
Jul 1, 1995, Lewis, Warren H.
While modern test instruments can compute decibels for us, we should know what a decibel is and how to manually calculate gain or loss.We all have a direct,...
Understanding sample rate.
Jun 1, 1995, Price, Ken; Saxe, Chuck
What is sampling rate and why is it important in the selection of test and measuring equipment?What is sampling rate? Furthermore, why is it important?...
The basics of solid state devices
Jun 1, 1995, DeDad, John A.
Many industrial control systems use a device that changes one form of energy to another; this device is called a transducer. Typical transducers convert...
Understanding variable speed drives.
Jun 1, 1995, Turkel, Solomon S.
A carefully organized start-up procedure assures better equipment operation and system reliability while greatly simplifying future troubleshooting.Proper...
The basics of solid-state devices. (part 2)
May 1, 1995,
A zener diode is a type of diode that acts as a voltage regulator when installed by itself or with other semiconductor devices. This device is unique...
Understanding variable speed drives.
May 1, 1995, Turkel, Solomon S.
Correct installation of variable frequency drives demands attention to vital factors such as location and environment, electrical connections grounding,...
The basics of solid-state devices
Apr 1, 1995,
A diode, in lay terms, is a semiconductor that has two electrodes and that passes electric current in one direction only. An ideal diode offers no impedance...
Understanding modern motors and controllers.
Mar 1, 1995, Lawrie, Robert J.
Included are the latest developments, fundamentals, NEC rules, standards, special features, and other important details on motors and controllers.Motors...
