Peltier Effect

In 1834, a French scientist Peltier discovered that if the junctions are at the same temperature and a current is passed through the circuit of the Thermocouple, heat is produced at one Junction and absorbed at the other i.e. one junction (former) is heated and the other junction (later) is cooled. This is known as Peltier … Read morePeltier Effect

Thomson Effect | Positive & Negative Types

The absorption or evolution of heat energy, if a current is allowed to flow in a conductor having its different parts of different temperatures is known as Thomson effect. or When a current flows through an unequally heated conductor, there is an absorption or evolution of heat in the body of the conductor. This is … Read moreThomson Effect | Positive & Negative Types

Electrical Resistance | Resistor materials

Definition The property of a material that opposes the flow of current through it, is called electrical resistance. The symbol of resistance is shown in the fig. 1. Practically, resistance looks like as Units of measurement of Resistance The SI unit of electrical resistance is the ohm (Ω). Every material will have some amount of … Read moreElectrical Resistance | Resistor materials

Difference Between Ground and Neutral

Ground or earth in a main (AC power) electrical wiring system is a conductor that exists primarily to help protect against faults and which in normal operation does not carry current. Neutral is a circuit conductor that may carry current in normal operation, and which is usually connected to earth. In-house wiring, it is the … Read moreDifference Between Ground and Neutral

Why don’t we use copper wire as a fuse wire?

Why don’t we use copper wire as a fuse wire Fuse is a Safety device which protects an electrical device from fault. Whenever there is a fault, a short circuit current will flow that leads to the generation of high heat. This heat will damage the electrical appliance if the circuit does not open in … Read moreWhy don’t we use copper wire as a fuse wire?

Difference between Amplification & Companding

Amplification It is an operation of an amplifier intended to make a signal stronger by increasing the power of a signal. The amplifier output matches the input signal shape but with a larger amplitude. It may be Linear or nonlinear. Companding It is a technique for compressing and then expanding (or decomposing) an analog or … Read moreDifference between Amplification & Companding

Electromagnetic Interference & Compatibility

Everday we come across many electronic devices like radio, television, smartphone, computer, tablets, speakers, headphones, chargers, etc. All these devices are the source of radiated electromagnetic fields called radiated emissions. These radiated emissions are the accidental by-product of the device design. Electromagnetic Interference (EMI) It is the degradation in performance of a device due to fields … Read moreElectromagnetic Interference & Compatibility

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