-
Transistor Emitter Bias
Emitter bias provides excellent bias stability in spite of changes in β or temperature. It uses both a positive and a ... -
Transistor Voltage Divider Bias
A method of biasing a transistor for linear operation using a single-source resistive voltage divider. This is the most widely used ... -
Testing a Transistor with a Digital Multimeter
Several faults that can occur in the circuit and the accompanying symptoms are illustrated in Below Figure. Symptoms are shown ... -
Troubleshooting a Biased Transistor
Several faults can occur in a simple transistor bias circuit. Possible faults are open bias resistors, open or resistive connections, ... -
Optocouplers Working Principle
What is optocoupler? An optocoupler is an optical link and it connects two circuits via this link. The optical link ... -
Phototransistor Circuit Example
Phototransistors are used in a variety of applications. A light-operated relay circuit is shown in below Figure (a). The phototransistor Q1 ... -
Phototransistor Working Principle
A phototransistor is similar to a regular BJT except that the base current is produced and controlled by light instead of ... -
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 ... -
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 ... -
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 ...