Car Stereo Amplifier Circuit

admin February 14, 2011 10 Comments
Car Stereo Amplifier Circuit Given below is the circuit of a car stereo amplifier that can be used in cars or other vehicles. We have used TDA1553, which is a Class-B audio amplifier. Description : Here is the circuit of a car stereo amplifier based on TDA1553. TDA1553 is a monolithic Class-B audio amplifier which contains 2 x 22 watt amplifiers in bridge tied load configuration. The amplifier operates from 12V DC and is developed intentionaly for car audio...
read more

15W Class B Audio Amplifier

admin August 18, 2011 7 Comments
Audio Amplifier Circuit – 15 Watts The circuit below is  of a  15 Watts Class B audio amplifier circuit  designed using a dual Op-amp and transistors.   Description : The circuit shown here is of a simple Class-B audio amplifier based on opamp TL082, transistors TIP41 and TIP42. LM833 is a dual opamp with high slew rate and low distortion particularly designed for audio applications. This audio amplifier circuit can deliver 15 watt audio output into an 8 ohm speaker...
read more

Active crossover circuit

admin February 9, 2011 3 Comments
Active Crossover Circuit Given below is an Active crossover circuit suitable for HiFi audio systems using LM833, the dual operational amplifier. Description: Crossover circuits are of two types, active and passive. Passive crossover circuit uses passive components only and they are very simple, but they waste a considerable amount of energy and also induce distortion. Active crossovers does not have the above said draw backs and they are a better option for HiFi audio systems. Active crossovers split the...
read more

Bridge Amplifier using TDA 4935

admin June 1, 2015 1 Comment
Bridge Amplifier The circuit given below is a bridge audio amplifier circuit using IC  TDA4935. Description : TDA4935 is 2x15W high quality audio amplifier IC from Siemens. The IC can be used in stereo mode or bridge mode. In stereo mode it can deliver 15W per channel and in bridge mode it can deliver 30W into a 8 ohm load at 30V supply. TDA4935 requires very few external components and has a wide power supply voltage range. The IC...
read more

HiFi headphone amplifier circuit

admin January 7, 2011 4 Comments
Description. LM4880 is HiFi dual audio amplifier IC from National Semiconductors. This IC is specifically designed to produce high quality audio output with a minimum number of external components.LM4880 is capable of delivering 250mW per channel into an 8 ohm load. The IC has 0.1% THD and has a supply voltage range of 2.7 to 5V DC. In the circuit shown below, resistors R1 and R2 are feedback resistors.C4 and C5 are input DC decoupling capacitors. Capacitor C3 provides...
read more

20W audio amplifier using TDA7240

admin August 12, 2010 18 Comments
Description The audio amplifier shown here is based on the TDA7240 IC from ST Microelectronics. The TDA 7240 is an integrated audio amplifier IC that can deliver 20 watts of audio output power into a 4ohm load. The IC has minimum external parts count and is available in the 7 pin compact Heptawatt package. The IC also has a lot of good features like loud speaker protection, short circuit protection, low noise, low distortion etc. The circuit can be...
read more

2 x 60 W audio amplifier circuit

jacky July 1, 2010 47 Comments
Description. The circuit diagram shown here is of a 2 x 60 Watt stereo amplifier based on the LM4780 from National Semiconductors. LM4780 is a superb audio amplifier IC capable of delivering 60W Rms power output / channel into 8 ohm speakers. The LM4780 has very low total harmonic distortion (less than 0.5% at full output) and has a power supply rejection ration (PSRR) of 85 dB. The IC requires very few external components and has a built in...
read more

Motional feed back amplifier

jacky April 29, 2010 125 Comments
This versatile amplifier circuit is designed and submitted by Mr Seetharaman Subramanian from Chennai . The full credit of this article goes to him and we are very proud to publish this fabulous circuit here. Seetharaman’s description about the circuit. This concept has appeared long back in Practical Electronics a UK based Magazine. Based on this concept I designed this circuit during 1981 to 1986 with lots of field trials and modifications, the design was frozen in 1986. I...
read more

Working of Amplifiers

john May 2, 2011 1 Comment
What is an Amplifier? We see amplifiers in almost all the electronic equipments around us. Though we usually relate them to stereo equipments they are also found in TV’s, computers, MP3 players and so on. All these devices have a speaker which is used to reproduce the original sound. Related Articles WORKING OF SPEAKERS MOTIONAL FEEDBACK AMPLIFIER MULTI-CHANNEL SURROUND SOUND SYSTEMS Therefore an amplifier can be device that is used to change the amplitude of a signal. This increase...
read more

40W amplifier using TDA1514

jacky April 7, 2010 16 Comments
Description. Many electronic circuits dealing with audio amplifier circuits have been published here. This is just another one and here we use the TDA 1514 high performance hi-fi amplifier from Philips. The IC has a bunch of useful features like thermal protection, mute-standby facility, low harmonic distortion etc. The amplifier operates from a dual +25/-25 V DC power supply and can deliver 40Watts output power to an 8 ohm speaker. The audio signal to be amplified is fed to...
read more