Hi-Fi Dx Bass Circuit

Hi-Fi Dx Bass Circuit Diagram

Bass refers to the low frequency components of an audio signal. At higher amplitudes or volume, human ears tend to pick up low and high frequency spectrum with much accuracy. In other words, the bass and treble effects are felt at higher volumes or loud music. Usually this audio level…
Continue Reading→

10 LED VU Meter using LM3915 and LM324

LED VU Meter Circuit Diagram using LM3915 and LM324

VU Meters are used in many applications like in discotheques to measure the level of audio signals. This level or magnitude of sound signal is termed as loudness. They are basically used to measure the loudness of sound signals or measure the noise signal. There are two ways to measure…
Continue Reading→

USB Sound Card Circuit

USB Sound Card Circuit Diagram

A sound card is a device which allows the computer or an embedded system to create and record real and high quality sound. It is used to translate analog sound signal into computer recognized digital signal and vice-versa. Typical sound card consists of an analog to digital converter to convert…
Continue Reading→

Band Pass Filter Design and Applications

Passive RC Band Pass Filter Circuit Diagram

We have already studied basics of filters and operation of Passive low pass and high pass filters in previous articles, now let us see the working and applications of Band pass filter. To study the basics of filters, Passive low pass filter operation and frequency response, go through the article…
Continue Reading→

High Pass Filter Design and Applications

Passive High Pass RC Filter Circuit

We have already studied the basics of filters and operation of Passive low pass filter in the article Low Pass Filter Design and Applications. This article explains you entire operation and applications of High pass filter. High Pass Filter: The operation of passive high pass filter is exact opposite to…
Continue Reading→

Working of Full Wave Rectifier

Center Tapped Full Wave Rectifier Circuit Diagram

Full wave rectifier rectifies the full cycle in the waveform i.e. it rectifies both the positive and negative cycles in the waveform. We have already seen the characteristics and working of Half Wave Rectifier. This Full wave rectifier has an advantage over the half wave i.e. it has average output…
Continue Reading→

Wireless Electronic Notice Board using GSM

Wireless Electronic Notice Board using GSM Circuit Diagram

We know the importance of notice boards in public places like railway stations, bus stations and airports. But changing notices day-to-day is a difficult task. This article explains you how to design a wireless electronic notice board  using GSM technology. The project displays the data on LCD whatever we sent…
Continue Reading→

Low Pass Filter Design and Applications

RC Low Pass Filter Circuit Diagram

Electrical filter is a circuit, designed to reject all unwanted frequency components of an electrical signal and allows only desired frequencies. In other words a filter is a circuit which allows only a certain band of frequencies. These filters are mainly categorized into 2 types. They are Active filters and…
Continue Reading→

Half Adder and Full Adder Circuits

Full Adder Logic Diagram

Adder is a combinational logic circuit designed to add the binary numbers. General adder circuit produces. A typical adder produces a sum (S) and a carry (C) as the output. These adders are also used to add the other formats like BCD (Binary Coded Decimal), gray code, XS – 3,…
Continue Reading→