Bipolar Junction Transistor as a Switch
Journal Title: IOSR Journals (IOSR Journal of Electrical and Electronics Engineering) - Year 2018, Vol 13, Issue 1
Abstract
Understanding the application of a bipolar Junction transistor or BJT as a switch requiers understanding the general working principles behind a transistor and the specific working principles behind a BJT. A transistor is essentially a semiconductor device with physical properties that make it ideal for amplifying or switching electric current and other signal. At the heart of this device is a doped semiconductor with engineered properties to alter its conductivity for a particular use. A BJT is a type of transistor with two major semiconductor materials that constitute three major areas or regions, each doped according to requirements. This architectural characteristics of a BJT brings forth effective applications in implications or on-off switching operations. Nonetheless, understanding BJT as a switch requires understanding the working principles underneath the device, the functions of each of the three major regions within this transistor, and the role of electron movement or current flow in the switching mechanism
Authors and Affiliations
Ali Habeb Aseeri, Fouzeyah Rajab Ali
A Novel Soft Switching PWM Dc-Dc Converter
This paper presents the design of a soft-switching boost dc-dc converter. Passive soft-switching is employed due to its advantages over the active soft-switching and its ability to reduce switching losses. A Laplace tran...
A Study of Triangle Current Charge Method in Ni-MH Battery
This study propose the charging method from the triangle current charge method in Ni-MH battery. By using microcontroller board (PIC24FJ128GB110) to control the battery charging circuit. The charger recorded the battery...
Solving Economic Dispatch Problem with Valve-Point Effect using Bat Algorithm
This paper presents application of bat algorithm (BA) for solving economic dispatch (ED) problem considering valve-point effect and transmission losses. The practical ED problems have non-smooth cost function with equali...
Real Time E-Calendar for People
Persons with disability around the world reported as current census in China 85,020,000, Japan 5,111,600, Russia 12,660,000, American Samoa 3,608, Australia 4,234,200, Malaysia 359,203, Thailand 1,478,662, India 26,814,9...
Smart Devices Control System By Using Android
Today, net of Things technology is most popular compared to manual systems. With the fast will increase within the variety of users of the net over the past decade, this case has created net a locality and approach of li...