Electronics Coach

Definition: Feedback Amplifier is a device that is based on the principle of feedback. The process by which some part or fraction of output is combined with the input is known as feedback. In simple words, we can say feedback amplifiers are the type of amplifiers in which a part of the output is given back to the input. Have a look at the pictorial representation showing how feedback is implemented. As we know that an amplifier is a device that amplifies the signal. When we talk … [Read more...] about Feedback Amplifier

Definition: Function Generator is basically a signal generator that produces different types of waveforms at the output. It has the ability to produce waveforms such as sine wave, square wave, a triangular wave, sawtooth wave etc. An adjustable frequency range is provided by the function generator which is in the range of some Hz to several 100KHz. There exist various function generators that have the ability to produce two different waveforms simultaneously by using two different output … [Read more...] about Function Generator

Definition: Op-Amp is an abbreviation for the operational amplifier is basically a three terminal voltage amplifying device. It is a high gain, negative feedback amplifier that provides stabilized voltage gain. Op-amps are considered as the basic building blocks of the circuits in the field of analogue electronics. These are designed in such a way to be used with external feedback components such as resistors, capacitors in between input and output terminals. This 3 terminal device … [Read more...] about Operational Amplifiers (Op-Amp)

Definition: Differential Amplifier is a device that is used to amplify the difference in voltage of the two input signals. Differential Amplifier is an important building block in integrated circuits of analog system. It typically forms input stages of operational amplifiers. In simple words, we can say It is a device that amplifies the difference of 2 input signals. Let’s have a look at the below-shown diagram where an operational amplifier is used as a differential … [Read more...] about Differential Amplifier

Definition: MOSFET is an acronym for Metal Oxide Semi-Conductor Field Effect Transistor. It is a device in which the variation in the voltage determines the conductivity of the device. It is a semiconductor device that belongs to FET family. MOSFET is also known as IGFET i.e., insulated gate field effect transistor. But usually, the word MOSFET is used because most devices are made using Si for semiconductors and gate electrode of metal oxide. It is a three terminal device which has a source, … [Read more...] about Metal Oxide Semi-Conductor Field Effect Transistor (MOSFET)

Definition: An optocoupler or optoelectronic coupler is an electronic component that basically acts as an interface between the two separate circuits with different voltage levels. Optocouplers are common component by which electrical isolation can be supplied between the input and output source. It is a 6 pin device and can have any number of photodetectors. Here, a beam of light emitted by a light source exists as an only contact between input and output. Due to this, we can have an … [Read more...] about Optocouplers

Definition: Wien Bridge Oscillator is an oscillator which uses RC network so as to produce a sine wave at the output. These are basically the low-frequency oscillator that generates audio and sub audio frequency that ranges between 20 Hz to 20 KHz. This oscillator circuit uses the Wien bridge to provide feedback with the desired phase shift. It gives highly stable oscillation frequency and does not vary much with supply or temperature variation. It is basically a two-stage amplifier that … [Read more...] about Wien Bridge Oscillator