What is Transistor | Transistor Definition | Complete Working of Transistor

What is Transistor ? When a third doped element is added to a crystal diode in such a way that two pn junctions are formed, the resulting device is known as a transistor. The transistor—an entirely new type of electronic device—is capable of achieving amplification of weak signals in a fashion comparable and often superior … Read more

Cold Cathode Gas Diode | Applications of Glow Tubes

Cold-Cathode Gas Diode Fig. 3.6 shows the cut-away view of the cold-cathode gas diode. It essentially has two electrodes, anode, and cathode mounted fairly close to each other in an envelope filled with few inert gases at small pressure. The anode is in the shape of a thin wire whereas cathode is of the cylindrical … Read more

Gas Filled Tubes | Conduction in a Gas

INTRODUCTION OF GAS-FILLED TUBE In the vacuum tubes, the electrons pass from the cathode to anode in a vacuum. In that type of tubes, extreme care is taken to generate as perfect a vacuum as possible to prevent ionization of gases and the resulting large uncontrolled currents. It may be mentioned here that the logic … Read more

Half Wave rectifier | Properties of Half Wave rectifier | Ripples Factor

What is a Half Wave Rectifier? A half wave rectifier can be explained as a type of rectifier that only passes one half-cycle of an AC voltage waveform to pass, blocking the remaining half-cycle. Half wave rectifiers are normally used to convert AC power to DC power, and only require one diode to construct. A … Read more

What is Diode | Diodes Working | Zener | LED | Varactor, Schottky, Tunnel

What is diode ? A diode can be discussed as a two-terminal electronic device that only conducts current in one direction (so long as it is working within a required voltage level). An ideal diode always has zero resistance when it is forward biased or one direction, and infinite resistance in the reverse bias. basically … Read more

Full wave Rectifier | Bridge | Center tap| Properties | Efficiency | Ripples

FULL WAVE RECTIFIER: Defining Full Wave Rectifiers A full wave rectifier is defined as a rectifier that converts the complete cycle of alternating current into pulsating DC. Unlike half wave rectifiers that utilize only the half wave of the input AC cycle, full wave rectifiers utilize the full cycle. The lower efficiency of the half … Read more

Review Topics Of Electronic |Problems |Discussion Questions

Review Topics Of Electronics What is the electronics? Define some important applications of electronics. discuss briefly the structure of the atom. Explain how valence electrons define the electrical properties of a material. Explain the constant voltage source and constant current sources. What is their utility? Derive the condition for the delivery of maximum power from … Read more

MCQ’s | Electrons | Atomic | Voltage | Thevenin’s

Mcqs of electronics of the first chapter which are most important and usually this type of Mcqs of electronics coms in job tests not all of them but 2 or 3 from this post. these Mcqs of electronics are prepared for the learners who are now trying to get a job. The outermost orbit of … Read more

Norton’s Theorem | Chassis and Ground| Properties

What is Nortons Theorem Fig. 1.38 (i) shows a circuit enclosed in a box with A and B terminals brought out. The network in the box may have any number of e.m.f. sources and resistors connected in any manner. But according to Norton, the complete circuit behind A and B terminals can be changed by … Read more

Thevenin’s Theorem | Properties of Thevenin’s Theorem | Problems

Thevenin’s Theorem Sometimes it is desirable to determine a particular branch current in a circuit as the resistance of that branch is changing while all other resistances and voltages remain constant. For instance, in the circuit shown in Fig. 1.23, it may be required to determine the current through RL for five values of RL, … Read more