Piezoelectric Effect in Rochelle Salt, Quartz Crystal and Tourmaline

Piezoelectric Effect in Rochelle Salt, Quartz Crystal and Tourmaline Piezoelectric Effect: Some crystalline materials like Rochelle Salt, Quartz and Tourmaline exhibit the Piezoelectric Effect. When we apply an AC voltage across them they vibrate at the frequency of the applied Read More

Oscillators – Introduction, Types and Applications

Oscillators – Introduction, Types and Applications An electronic device that generates sinusoidal oscillations of desired frequency is known as sinusoidal oscillator. It receives DC energy and changes it into AC energy of desired frequency. In oscillators, the feedback voltage is Read More

Operational Amplifier – Input Characteristics, Common Mode Gain, CMRR and Slew Rate

Operational Amplifier – Input Characteristics, Common Mode Gain, CMRR and Slew Rate Operational Amplifier: An operational amplifier (Op-amp) is a multistage amplifier and consists of a differential amplifier stage, a high Common Emitter (CE) amplifier stage and Class-B Push-Pull emitter follower. Read More

Amplifier Frequency Effects

Amplifier Frequency Effects Frequency response of an amplifier is the graph of its Gain versus the Frequency. The middle range of frequency is where amplifier is normally operated. At low frequencies coupling and bypass capacitor acts as high capacitive reactance Read More

Types of MOSFET

TYPES OF MOSFET Suitable for the post of Junior Engineer in BSNL, DMRC, DRDO, PTCUL, RRB, UPCL, etc examination. Metal Oxide Semiconductor Field Effect Transistor (MOSFET) is also called as Insulated Gate Field Effect Transistor (IGFET). The Depletion Mode MOSFET (DMOS): DMOS has a piece Read More

FET APPLICATIONS IN TODAY ANALOG WORLD

FET APPLICATIONS IN TODAY ANALOG WORLD Suitable for the post of Junior Engineer in BSNL, DMRC, DRDO, PTCUL, RRB, UPCL, etc examination. Application: Buffer Main Advantage: High Zin and Low Zout Uses: General Purpose measuring equipment, receivers. Application: RF Amplifier Main Advantage: Low Noise Uses: FM Tuners, Read More

Most Important Points | Field Effect Transistor | Competitive Examination

Most Important Points | Field Effect Transistor | Competitive Examination Suitable for the post of Junior Engineer in BSNL, DMRC, DRDO, PTCUL, RRB, UPCL, etc examination. BJT relies on two types of charge i.e. free electrons and holes. This is why called bipolar. While FET Read More

Most Important Points | Rectifier Configuration | Competitive Examination

Most Important Points | Rectifier Configuration | Competitive Examination Suitable for the post of Junior Engineer in BSNL, DMRC, DRDO, PTCUL, RRB, UPCL, etc examination. Also Read: Most Important Points | Bipolar Junction Transistors | Competitive Examination Author: Mr. Amarjeet Singh Jamwal, Assistant Loco Pilot, Ambala Division, INDIAN RAILWAY. Reference: Albert Read More

Most Important Points | Classes of Transistor Amplifier Operation | Competitive Examination

Most Important Points | Classes of Transistor Amplifier Operation | Competitive Examination Suitable for the post of Junior Engineer in BSNL, DMRC, DRDO, PTCUL, RRB, UPCL, etc examination. Class – A: Transistor operate in active region at all times i.e. collector current flows for 360º Read More

Most Important Points | Bipolar Junction Transistors | Competitive Examination

Most Important Points | Bipolar Junction Transistors | Competitive Examination Suitable for the post of Junior Engineer in BSNL, DMRC, DRDO, PTCUL, RRB, UPCL, etc examination. Bipolar Junction Transistors (BJT) is a three terminal, two junction, non-linear semi-conductor device, that can amplify electronic signals. Emitter Read More