Engineering Tutorial

Token Ring and Token Bus Working Animation

Bharadwaj — Thu, 15 Sep 2016 18:44:46 +0000

Token Ring At the start, a free Token is circulating on the ring, this is a data frame which to all intents and purposes is an empty vessel for transporting data. To use the network, a machine first has to capture the free Token and replace the data with its own message. In the example above, machine 1 wants to send some data to machine 4, so it first has to capture the free Token. It then writes its data and the recipient’s address onto the Token (represented by the yellow flashing screen). The packet of data is then sent […]

The post Token Ring and Token Bus Working Animation appeared first on Engineering Tutorial.

Capacitively Coupled Multistage Transistor Amplifier

Bharadwaj — Wed, 17 Aug 2016 17:53:17 +0000

Two or more amplifiers can be connected in a cascaded arrangement with the output of one amplifier driving the input of the next. Each amplifier in a cascaded arrangement is known as a stage. The basic purpose of a multistage arrangement is to increase the overall voltage gain. For purposes of illustration, we will use the two-stage capacitively coupled amplifier in Figure. Note that both stages are identical common-emitter amplifiers with the output of the first stage capacitively coupled to the input of the second stage. Capacitive coupling prevents the dc bias of one stage from affecting that of the […]

The post Capacitively Coupled Multistage Transistor Amplifier appeared first on Engineering Tutorial.

Transistor Amplifier Working Principle

Bharadwaj — Wed, 17 Aug 2016 17:26:59 +0000

A linear amplifier provides amplification of a signal without any distortion so that the output signal is an exact amplified replica of the input signal. A voltage-divider biased transistor with a sinusoidal ac source capacitively coupled to the base through C1 and a load capacitively coupled to the collector through C2 is shown in Figure. The coupling capacitors block DC and thus prevent the internal source resistance, Rs, and the load resistance, RL, from changing the dc bias voltages at the base and collector. The capacitors ideally appear as shorts to the signal voltage. The sinusoidal source voltage causes the […]

The post Transistor Amplifier Working Principle appeared first on Engineering Tutorial.

Bridge Rectifier Working Animation

Bharadwaj — Mon, 15 Aug 2016 16:13:30 +0000

What is Rectifier? A rectifier is a device that simply converts alternating current (AC) into direct current (DC). The way a rectifier changes AC to DC is by the use of a diode, or multiple diodes. Diodes only allow electrons to flow in one direction through them. When the voltage on the anode is more positive than the voltage on the cathode, current will flow through the diode. If the voltage is reversed, making the cathode more positive, then current will not flow through the diode. (unless the peak reverse voltage rating is exceeded). TYPES OF DIODE : 1) HALFWAVE […]

The post Bridge Rectifier Working Animation appeared first on Engineering Tutorial.

Different Types of Diodes

Bharadwaj — Sun, 14 Aug 2016 16:54:12 +0000

Types of Diodes: Small signal or Small current diode – These diodes assumes that the operating point is not affected because the signal is small. Large signal diodes – The operating point in these diodes get affected as the signal is large. Zener diodes – This diode runs in reverse bias condition when the voltage reaches the breakdown point. A stable voltage can be achieved by placing a resistor across it to limit the current. This diode is used to provide reference voltage in power supply circuits. Light emitting diodes (LED) – This is the most popular kind of diode.When […]

The post Different Types of Diodes appeared first on Engineering Tutorial.

Ethernet Bus Animation

Bharadwaj — Sun, 14 Aug 2016 16:35:47 +0000

Ethernet Bus: This is a coax based Ethernet network where all machines are daisy chained using RG58 coaxial cable (sometime referred to as Thin Ethernet or Thin-net). Machine 2 wants to send a message to machine 4, but first it ‘listens’ to make sure no one else is using the network. Collision : This animation starts with machine 2 and machine 5 both trying to transmit simultaneously. The resulting collision destroys both signals and each machine knows this has happened because they do not ‘hear’ their own transmission within a given period of time (this time period is the propagation […]

The post Ethernet Bus Animation appeared first on Engineering Tutorial.

Three Phase Inverter Animation

Bharadwaj — Sun, 14 Aug 2016 16:19:54 +0000

Three Phase Inverter: The topology of a three-phase inverter consists of 3 legs; each leg includes a switch in either the up or down position. The resulting eight possible switching configurations give rise to 6 active voltage space vectors and 2 zero vectors. The animation shows a specific sequencing of the 8 states where the active vectors rotate in discrete 60o steps.

The post Three Phase Inverter Animation appeared first on Engineering Tutorial.

Electricity Magnetism

Bharadwaj — Sun, 14 Aug 2016 15:57:04 +0000

MAGNETISM There are several relationships between electricity and magnetism. We will explore them one by one. The first relationship we will discuss is how current flowing through a wire creates a magnetic field. A steady current creates a steady magnetic field like that created by a magnet. Electro-Magnet We can create an electro-magnet by wrapping many turns of wire on a core, then causing an electrical current to flow through this coil of wire. With such a device we can create a magnetic field that can be controlled; we can turn it on and off by controlling the current. In […]

The post Electricity Magnetism appeared first on Engineering Tutorial.

Forward Bias & Reverse Bias Diode Working Animation

Bharadwaj — Sun, 14 Aug 2016 15:44:24 +0000

Engineering Tutorial Keywords:pn junction diode animation free download

The post Forward Bias & Reverse Bias Diode Working Animation appeared first on Engineering Tutorial.

Summary Of Transistor Bias Circuits

Bharadwaj — Sun, 14 Aug 2016 15:20:09 +0000

In figures below, npn transistors are shown. Supply voltage polarities are reversed for pnp transistors. Engineering Tutorial Keywords:Transistor biasing in hinditransistor basics in hindi

The post Summary Of Transistor Bias Circuits appeared first on Engineering Tutorial.