Phototransistor Working Principle
  • Electronic Devices & Circuits

Phototransistor Working Principle

A phototransistor is similar to a regular BJT except that the base current is produced and controlled by light instead of…

  • Electronic Basics

How a Transistor Switch Works

The transistor in Figure is used as a switch to turn the LED on and off. For example, a square wave…

  • Electronics Animation

Transistor as a Switch Working Principle

The below Figure illustrates the basic operation of a BJT as a switching device. In part (a), the transistor is in…

  • Electronic Devices & Circuits

Basic Transistor Amplifier Circuit Principle

A transistor amplifies current because the collector current is equal to the base current multiplied by the current gain, b. The base…

  • Electronic Devices & Circuits

Transistor Collector Characteristic Curves

Using a circuit like that shown in Figure (a), a set of collector characteristic curves can be generated that show how…

  • Electronic Devices & Circuits

Why Silicon is preferred over Germanium ?

 As we all know, both Silicon and Germanium are semiconductor devices. But the present trend is to use Silicon instead…

  • Electronic Basics

How to Test a Transistor using Multimeter

An ohmmeter can be used to check the state of a transistor i.e., whether the transistor is good or not.…

  • Electronic Basics

How to Identify the Transistor Terminals

There are three leads in a transistor viz. collector, emitter and base. When a transistor is to be connected in…

  • Electronic Devices & Circuits

Transistor Cut off, Saturation & Active Regions

The below Fig. (i) shows CE transistor circuit while Fig.(ii) shows the output characteristcs along with the d.c. load line.…

  • Electronic Devices & Circuits

Transistor Load Line Analysis

In the transistor circuit analysis, it is generally required to determine the collector current for various collector-emitter voltages. One of…