Tag - Transistor

Differential Amplifier using Transistors

As the name indicates Differential Amplifier is a dc-coupled amplifier that amplifies the difference between two input signals. It is the building block of analog integrated circuits and operational amplifiers (op-amp). One of the important feature of differential amplifier is that it tends to reject or nullify the part of input signals which is common to both inputs. This provides very good noise immunity in a lot of applications. Let's see the block diagram of a differential amplifier. Vi1 and Vi2 are input [...]

2N2222 Transistor

Monostable Multivibrator using Transistors

Multivibrator is a non linear oscillator or function generator which can generate square, rectangular and pulse waves. Monostable Multivibrator or One-Shot Multivibrator has only one stable state. By default monostable multivibrator will be in its stable state, but when triggered it will switch to unstable state (quasi-stable state) for a time period determined by the RC time constant in the circuit. Monostable Multivibrator using Transistors - Circuit Diagram In the above circuit diagram we can find two transistors which are wired as switches. Please read [...]


Astable Multivibrator using Transistors

An Astable Multivibrator or a Free Running Multivibrator is the multivibrator which has no stable states. Its output oscillates continuously between its two unstable states without the aid of external triggering. The time period of each states are determined by Resistor Capacitor ( RC ) time constant. Astable Multivibrator using Transistors - Circuit In the above diagram we can find two transistors which is wired as a switch. Please do read the article Transistor as A Switch. When a transistor is [...]

Simple Water Level Indicator

We have already posted about a Water Level Indicator and Controller using PIC Microcontroller. Today I am presenting a very useful, very cheap and very simple circuit using transistors for beginners in the field of electronics. This simple circuit can indicate the level of water in your tank using LEDs. Circuit Diagram The connections and arrangements are made as shown in the figure above. The +9V is supplied to water using a metal contact.  In this circuit all the transistors are working [...]

Chemical Circuit

The First Chemical Circuit Developed

Ion Transistors for the transport of both positive and negative ions, as well as biomolecules had been previously developed by a group of Organic Electronics research team at Linköping University. Now Tybrandt has now succeed in developing circuits using these Transistors similar to traditional silicon electronics. In essence of this technology we can build computer chips that can directly interface with our body cells. The major advantage of chemical circuit is that the charge carrier consists of chemical substances with various functions and this gives us [...]

Samsung’s New Transistor Structure using Graphene

Samsung Electronics has Developed a new Transistor Structure using Graphene to increase the possibilities of transistor in future, reported online by the journal Science, 17th May.  The core R&D incubator for Samsung Electronics, Samsung Advanced Institute of Technology has developed new Graphene Transistor Device structure to hold the Moore's law true for a decade. This research is regarded as a significant step in the development of  transistors, that can overcome the limitations of conventional Silicon Transistors. We all know that Semiconductor Electronics Devices consists [...]

New Organic Transistor by X-ray Probe : Do Well in Hot Water

Recently, the scientists from the National Institute of Standards and Technology (NIST) along with an international research team delineated the possibility of a new class of sterilizable, flexible, organic electronic materials  for medical applications by proving the stability of a novel and rugged thin-film membrane at high temperatures. The work conducted using a low-energy X-ray beam line, at the National Synchrotron Light Source (NSLS) in Brookhaven, N.Y., was supported by an international team led by researchers from the University of Tokyo and [...]

First Sterilizable Flexible Organic Transistor

A team of researchers from Tokyo, Japan has succeeded in manufacturing a Sterilizable Flexible Organic Transistor on a polymeric film. It is enough robust under high temperature medical sterilization process. Now a days the applications of electronics are increasing day by day in health and medical area as more IT devices are being introduced. The series ageing society with declining birthrate is expecting more from electronics. On these backgrounds electronics has more expectations about organic transistors, which is a soft [...]