A unijunction transistor is a 3 terminal semiconductor device which is unlike a BJT has only a single pn junction. It is basically designed to be used as a single-stage oscillator circuit for … [Read more...] about Unijunction Transistor (UJT) – Comprehensive Tutorial
Zener Diode Circuits, Characteristics, Calculations
Zener diodes - named after its inventor Dr. Carl Zener are fundamentally used in electronic circuits for generating precise voltage references. These are devices that are able to create a practically … [Read more...] about Zener Diode Circuits, Characteristics, Calculations
3 Terminal Fixed Voltage Regulators – Working and Application Circuits
The popular 3 terminal fixed regulators available today are in the form of IC 7805, IC 7809, IC 7812, IC 7815, and IC 7824, which correspond to fixed voltage outputs of 5 V, 9 V, 12 V, 15V, and 24 … [Read more...] about 3 Terminal Fixed Voltage Regulators – Working and Application Circuits
Optocouplers – Working, Characteristics, Interfacing, Application Circuits
OPTOCOUPLERS OR OPTOISOLATORS are devices that enable efficient transmission of DC signal and other data across two circuit stages, and also simultaneously maintain an excellent level of electrical … [Read more...] about Optocouplers – Working, Characteristics, Interfacing, Application Circuits
Schottky Diodes – Working, Characteristics, Application
Schottky barrier diodes are semiconductor diodes designed with minimal forward voltage and fast switching speeds which may be as low as 10 ns. These are manufactured in current ranges of 500 mA to 5 … [Read more...] about Schottky Diodes – Working, Characteristics, Application
Comparator Circuits using IC 741, IC 311, IC 339
The basic function of a comparator circuit to compare two voltage levels at its input pins and produce an output to show which input voltage has higher potential than the other. In this article we … [Read more...] about Comparator Circuits using IC 741, IC 311, IC 339