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 | Frequency| Ripples

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 simple Half … Read more

Full wave Rectifier | Properties | Efficeince | Ripples

FULL WAVE RECTIFIER: In full wave rectifier, current flows through the load in the same direction for both half cycles of ac input voltage .it allows unidirectional (one way) current through the load during the entire 360 degrees of the input cycle, whereas a half-wave rectifier allows current through the load only during one 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

Thevenin’s Theorem | Properties | Problems

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, let that … Read more

Conversion of Voltage Source into constant Current Source

Constant Current Source A voltage source that has a very huge internal*impedance as compared with external load impedance or resistance is known as a constant current source. In that case, the load current approximately remains the same when the output voltage changes. Fig. 1.12 (i) illustrates a constant current source. It is a direct current … Read more