The circuit of this project is an improved version of the circuit Sound/Voice transmission through IR. The disadvantage of the earlier circuit is the small range. [[wysiwyg_imageupload::]]This circuit has a better range as it uses a better transmitter with an additional amplifying unit before transmitting the electrical signals through IR LED.The transmitter part of this circuit is made using a microphone, BC 547 transistors, op-amp, resistors and capacitors. Added to this the aforementioned IR LED which finally transmits the data (in the case: music) to the receiver.On the other hand, the receiver section uses a TDA 2007 IC which is a dual power audio amplifier. It is aided by a receiver diode, a few capacitors, resistors and speakers. Keep on reading to find out how the circuit is constructed and how it works.
Audio amplifier using transistor BC547
In several cases the sound generated is not clearly audible and hence it is required to increase the intensity level so that it can be further used. This circuit based [[wysiwyg_imageupload::]]project demonstrates the principle and operation of a simple sound amplifier. The circuit is divided into three parts: 1.Sensor, 2.Amplifier, and 3. Output.Sensor converts the physical characteristics of sound into electrical pulses, which is amplified by the amplifier unit.The amplified output is obtained across the speaker. This circuit finds applications in security systems and as intermediate circuit to sense/amplify sound signals. The circuit of this project is based on condenser mic which is used as a sensor to sense the audio signals and convert them to electrical pulses. The output of the mic is passed to Transistor T1 through a capacitor C1. Read on more to find out how the circuit is made and how it works.
Differential amplifier using IC741
This project will detail about working of differential amplifier in a circuit. Many electronic devices use differential amplifier internally. A differential [[wysiwyg_imageupload::]]amplifier is a type of electronic amplifier that multiplies the difference between two inputs by some constant factor (the differential gain). In the circuit explained here, differential amplifier has been created using IC 741. This circuit based project can be used to understand working of a differential amplifier circuit. A differential amplifier circuit is an amplifier circuit which amplifies the voltage difference between two inputs. Keep on reading to find out how the circuit is assembled and how it works.
Non inverting amplifier using LM 324
Some or the other time we need to amplify DC and AC voltage. This Non inverting amplifier circuit can solve our purpose. It can amplify voltage to high [[wysiwyg_imageupload::]]extent. This project can be used anywhere where we need amplification of voltage. The dependency of the output with the inverting and non-inverting pin can be simply explained as below,If the inverting pin is high compared to other pin, the output is negativeIf the non-inverting pin is high compared to other pin, the output is positiveKeep on reading to find out how mathematical formulas in involved in the process of non-inverting amplifier circuit, how the circuit is made and how it works.
Inverting amplifier using 741
This project on Inverting amplifier circuit demonstrates the principle of operation of opamp as inverting amplifier using 741. By this circuit we can amplify [[wysiwyg_imageupload::]]both AC and DC. If voltage is AC then its phase also changes; it gets inverted or is changed by 180 degree. Opamp is used to get high gains and can be used as amplifier in any circuit. It is due to prime importance in applicative and developmental areas that inverting configuration is a must for every electronic enthusiast and covering the basics of the inverting amplifier is this electronic circuit tutorial. IC 741 is used most of the time to play the role of the amplifier. This is a comparator IC and can be used in non-inverting configuration too depending upon how the power supply is connected. Keep on reading to find out how the circuit is constructed and what makes it work.
Inverting amplifier with signal feedback using NPN transistor
In this project about inverting amplifier, output voltage is fed back to input so as to cancel the effect of variation of temperature on voltage gain and improve [[wysiwyg_imageupload::]]stability of circuit with respect to temperature variations.Inverting inputs are more preferred than the non-inverting ones due to the main benefit of stability. Inverting amplifiers, hence, even though provide less gain, are used for more applications. From various electronic circuits such as integrator or differentiator, inverting amplifiers are used in designing filters for communication circuits.Without much change in the circuitry, inverting amplifiers can be made to work from AC to DC mode or vice versa. Hence, it becomes an easy task to design the circuits without giving much attention to the obvious power concerns. Let’s find out how to make an inverting circuit by using a transistor, a DC battery source and a few passive electronic components.
Inverting amplifier using NPN transistor
An inverting amplifier is a circuit in which output is out of the phase of the input. Using inverting condition limits the gain of the circuit but the stability of the [[wysiwyg_imageupload::]]circuit is much higher than a non-inverting one. Circuits such as differentiator, integrators etc. are preferred to be constructed on an inverting amplifier mode. It is due to prime importance in applicative and developmental areas that inverting configuration is a must for every electronic enthusiast and covering the basics of the inverting amplifier is this electronic circuit tutorial. IC 741 is used most of the time to play the role of the amplifier. This is a comparator IC and can be used in non-inverting configuration too depending upon how the power supply is connected. The project demonstrates the principle behind the operation of an inverting amplifier. In this circuit input to output voltage effect is reversed i.e., an increasing input voltage results in decreasing output voltage.
Designing high gain amplifier using Transistor
This tutorial actually meant to explain the practical importance of the well known transistor theories, characteristics plots and make use of them to design a high gain amplifier circuit using a single transistor and minimum number of other components. We will analyze certain transistor characteristics and theories, summaries them, and by the end…