Technical articles on Electronics and Electrical Engineering topics focused on Basics of EE, Electronic components, power systems and equipment used for generation, transmission, operation, and controls of electricity.
For ease of drawing complex circuit diagrams, electronic amplifiers are often symbolized by a simple triangle shape, where the internal components are not individually represented. This symbology is very handy for cases where an amplifier’s construction is irrelevant to the greater function of the overall circuit, and it is worthy of familiarization: The +V and … Read more
There is much to be said for neatness of assembly in electrical signal wiring. Even though the electrons don’t “care” how neatly the wires are laid in place, human beings who must maintain the system certainly do. Not only are neat installations easier to navigate and troubleshoot, but they tend to inspire a similar standard … Read more
The basic thyristor is a 4-layer device having two terminals, the anode and the cathode. It comprises of four semiconductor layers that form a PNPN structure. The Shockley Diode The DIAC The Silicon-Controlled Rectifier (SCR) The TRIAC The Unijunction Transistor (UJT) The Silicon-Controlled Switch (SCS) Field-effect-controlled thyristors How does a Thyristor Work More Topics on … Read more
Two relatively recent technologies designed to reduce the “driving” (gate trigger current) requirements of classic thyristor devices are the MOS-gated thyristor and the MOS Controlled Thyristor, or MCT. The MOS-gated thyristor uses a MOSFET to initiate conduction through the upper (PNP) transistor of a standard thyristor structure, thus triggering the device. Since a MOSFET requires negligible current to “drive” … Read more
If we take the equivalent circuit for an SCR and add another external terminal, connected to the base of the top transistor and the collector of the bottom transistor, we have a device known as a silicon-controlled-switch, or SCS: (Figure below) This extra terminal allows more control to be exerted over the device, particularly in the mode of forced … Read more
Circuit breakers are the “final control elements” of the electric power industry, akin to control valves in the process industries. They are strictly on/off devices, used to make and break connections under load in power systems. Circuit breakers automatically open when dangerous circuit conditions are detected. Some low-voltage circuit breakers are strictly local-controlled devices, but … Read more
A breadboard is a prototyping board, or proto-board allows to quickly join electronic components to one another without having to solder component terminals and wires together. In this video you’ll learn the Fundamentals of breadboard: Complete list of Arduino Tutorials
A breadboard, sometimes called a prototyping board, or proto-board allows to quickly join electronic components to one another without having to solder component terminals and wires together. How to use a Breadboard (Video)
Unijunction transistor: Although a unijunction transistor is not a thyristor, this device can trigger larger thyristors with a pulse at base B1. A unijunction transistor is composed of a bar of N-type silicon having a P-type connection in the middle. See Figure below (a). The connections at the ends of the bar are known as bases B1 and B2; … Read more
Instrumentation is the science of automated measurement and control. Given below are top 13 Instrumentation and control system definitions every Electrical Engineering should be familiar with. Process The physical system we are attempting to control or measure. Examples: water filtration system, molten metal casting system, steam boiler, oil refinery unit, power generation unit. Process Variable, … Read more