MOSFET

What is the MOSFET ? Explain about it briefly.

JFET

JFET

What is the JFET ? Explain about it.

Bipolar Transistor Common-Emitter Output Characteristics

Bipolar Transistor Common-Emitter Output Characteristics

Discuss about the common-emitter configuration of a Bipolar transistor.

Bipolar Transistor Common-Base Output Characteristics

Bipolar Transistor Common-Base Output Characteristics

Discuss about the common-base configuration of a Bipolar transistor.

The Bipolar Transistor

The Bipolar Transistor

What is the bipolar transistor ? Explain about it.

Zener Diodes

               Since a conducting zener diode maintains the voltage across it at a value around its zener voltage, its main purpose is to serve as a voltage regulator.  A very simple circuit that demonstrates this is shown in Figure 2. This is a shunt voltage regulator circuit, since the zener diode is connected in shunt (parallel) with the load.  In this circuit, Vout will be maintained by the zener diode at the zener voltage level even if Vin changes, as long as Vin exceeds the zener voltage.

   

                If Vin increases, the current flowing through the zener diode ZD1 increases as well, causing the voltage across the resistor R to increase while allowing the voltage across the zener diode to remain at the zener voltage level.  Of course, if Vin falls below the zener voltage of ZD1, ZD1 stops conducting, and Vout starts falling with Vin. Note that this circuit is also a very inefficient way to regulate a voltage, since regulation is achieved by shunting current to ground, which is like simply throwing the excess energy away.

Zener Diodes

What do you know about zener diode? Discuss about it.

Light Emitting Diodes (LEDs)

Light Emitting Diodes (LEDs)

Explain about LED.

The Diode Curve

The Diode Curve

Discuss about the ideal and practical characteristic curves of a diode.

Junction Diode

Fig: p-n junction diode (1n4007 and symbol)

Junction Diode

Discuss briefly about the junction diode.

p-n junction

Figure:  The p-n junction. Note the depletion region at the

junction where only immobile uncovered charges (ions) exist

p-n junction

Before going to discuss about "Active electronic devices", let us know some thing related to them.
First of all what is p-n junction? Discuss something about it.

Note:

Hi guys.....
By today we completed another part. once go through all the topics what we discussed till now. From tomorrow we are going to start the "Active Electronic Devices".

Cristal oscillators

 

Types of cystal oscillators

Crystal oscillator symbol

One more passive electronic device...

Hi friends, one more important passive device is there. can u guess it?
If you think that any device as a passive device, discuss briefly about it.

Note:

Hi friends........

Today i m not sending any question. I m just giving a over view of equations when capacitors and inductors are connected in different ways.

Inductor connecions

Inductors

Inductance

Discuss briefly about the inductance.
How it will vary by varying its connections? describe.

Capacitor connecions

Capacitors

Happy pongal

Hello friends, ECE wishes u all a very warm pongal greetings...may u have all the prosperity in life and fortune go by ur way......hope u all had a fun filled break until now......it might just be the last holiday for most of us....so do finish it of on a high note....nd get back to work more positively, with more energy and a lot of courage...... wish u all gud luck...

Capacitance

Discuss briefly about the capacitance.
How it will vary by varying its connections? describe.

Finding resistance of a resistor.

As shown in Figure 1, a common resistor usually has 4 color bands, the first two of which indicates the first and second digit of its resistance value while the third band indicates the number of zeros that follows the first two digits.  The fourth band indicates the error or tolerance of the resistor.  For example, the top resistor in Figure has a resistance value of 1 kilo-ohm (10 ohms x 100) +/- 5%. Some resistors have 5 color bands to indicate their resistance values more precisely, an example of which is the bottom resistor of Figure. 
     

  Figure . The color bands of a resistor indicate its resistance value (see Table)

  Table.  Resistor Color Codes