HOW TO REDUCE NOISE FROM POWER SUPPLY PCB ?

In this tutorial we are going to learn about HOW TO REDUCE NOISE FROM POWER SUPPLY PCB ? A PWR supply noise reduction circuit, consisting of a ferrite bead, filter capacitor, & bypass capacitors for each system VCC, should be implemented. A summary of each component of the power supply noise reduction circuit follows: Ferrite […]

What is use of Decoupling Capacitors ?

In this tutorial we are going to learn about What is use of Decoupling Capacitors ? Decoupling capacitors serve two purposes: • First, they are sources of charge to devices that are sinking/sourcing HF currents. The caps act like charge buckets, quickly supplying/accepting current, as required by the devices located in the immediate vicinity. Decoupling […]

WHAT IS METAL OXIDE VARISTORS (MOV) ?

In this tutorial we are going to learn about WHAT IS METAL OXIDE VARISTORS (MOV) ? MOV is  a combination of variable and resistor. At low currents and voltages Varistors have  high resistance but at higher voltages and currents the resistance drops dramatically. A varistor’s I-V curve is very similar to a bidirectional TVS device […]

BASIC ELECTRONICS

In this tutorial learn about BASIC ELECTRONICS Electronics Device – A device made from I /c material which can perform basic operation such as rectification, amplification etc. Electronics circuit-A circuit which contains at least one electronics devices the main component.Ex- amplifiers, oscillator, rectifier counter, multiplexer. It is of two types:- Analog electronic circuit-an electronic circuit […]

WHAT ARE THE TWO MODE OF INTERFERENCE ?

In this tutorial we are going to learn about WHAT ARE THE TWO MODE OF INTERFERENCE ? EM disturbances can appear in the form of Common-Mode & Differential-Mode voltage & current components. Differential mode also called symmetrical noise/interference occurs when noise currents travel between live & neutral. The differential mode voltage components are measured between […]

WHICH ARE MAGNETIC COMPONENTS FOR EMI & EMC REDUCTION.

In this tutorial we are going to learn about WHICH ARE MAGNETIC COMPONENTS FOR EMI & EMC REDUCTION. Inductors · Select inductors with a low self capacitance and series resistance. · Use ferrite beads to add inductance to component leads. · Use ferrite beads to damp out parasitic oscillations. · Position inductor close to high […]

WHAT IS CIRCUIT DESIGN TECHNIQUES?

In this tutorial we are going to learn about WHAT IS CIRCUIT DESIGN TECHNIQUES? Use the minimum clock speeds possible for logic circuitry. Select the slowest switching speed logic. Select the logic with the greatest noise margin. Select logic families with the lowest switching energy. Avoid the use of both high impedance inputs and outputs. […]