Various amplifier circuits used for making amplifiers such as Power amplifier, Audio amplifier, Car amplifier, Stereo amplifier,Operational amplifier, Rf amplifier
Cascode amplifier is a two stage circuit consisting of a transconductance amplifier followed by a buffer amplifier. The word “cascode” was originated from the phrase “cascade to cathode”. This circuit have a lot of advantages over the single stage amplifier like, better  input output isolation, better gain, improved bandwidth, higher input impedance, higher output impedance, […]
Log amplifier. Log amplifier is a linear circuit in which the output voltage will be a constant times the natural logarithm of the input. The basic output equation of a log amplifier is v Vout = K ln (Vin/Vref); where Vref is the constant of normalisation, and K is the scale factor. Log amplifier finds
LM4910 stereo headphone amplifier. LM4910 belonging to the Boomer series of National Semiconductors is an integrated stereo amplifier primarily intended for stereo headphone applications. The IC can be operated from 3.3V ans its can deliver 0.35mW output power into a 32 ohm load. The LM4910 has very low distortion ( less than 1%)  and the shutdown
Amplifier is a circuit that is used for amplifying a signal. The input signal to an amplifier will be a current or voltage and the output will be an amplified version of the input signal. An amplifier circuit which is purely based on a transistor or transistors is called a transistor amplifier. Transistors amplifiers are
In this article, we are listing all the best and useful op amp circuits we have published so far.The list features more than 25+ op amp circuits and projects which explore different applications of the operational amplifier IC. In addition to basic op amp circuits like the Differential amplifier, Inverting and Non-inverting amplifiers, Summing amplifier etc.,
BA5417 stereo power amplifier. BA5417 is a stereo amplifier IC with a lot of good features like thermal shut down, standby function, soft clipping, wide operating voltage range etc. The IC can deliver 5W per channel into 4 ohm loud speakers at 12V DC supply voltage. The BA5417 has excellent sound quality and low THD
BA5406 stereo amplifier. BA5406 is a monolithic integrated stereo amplifier from ROHM semiconductors. It can deliver 5W per channel into a 4 ohm loudspeaker at 9V supply. Amplifiers based on BA5406 does not require an output coupling transformer and can be operated from a single supply. The operating voltage range is from 5 to 15V
60 watt amplifier STK4038. STK4038 is an integrated AF power amplifier that can deliver 60 watts of output power into a 4 ohm load. The internal fixed current circuitry reduces switch ON/OFF clicks. The IC supports the addition of external circuits for thermal shutdown, pop noise reduction, output short circuit protection etc. Description. The 60
12V 50 watt audio amplifier LM3876 is a high performance audio power amplifier IC from National Semiconductors. The LM3876 can deliver 50watts of output power into an 8 ohm loudspeaker. LM3876 has excellent signal to noise ratio and has wide supply voltage range. Other features of LM3876 are output to ground short circuit protection, input
100W Audio Amplifier TDA7294. TDA7294 is an integrated, monolithic, Class AB audio amplifier designed specifically for Hi-Fi applications. The IC has a DMOS output stage and can deliver 100W RMS into an 8Ohm speaker at +/-38V dual supply. The TDA7294 has low noise, low distortion, good ripple rejection and can be operated from a wide
LA3161 Stereo Preamplifier. LA3161 is an integrated 2 channel pre-amplifier intended for car stereo applications. The LA3161 has a built in voltage regulator which plays a great role in improving ripple rejection . The IC requires minimum number of external parts and the noise level is very low. The IC has high input impedance (around
LA4550 Audio Amplifier 4W BTL. LA4550 is a 2 channel audio frequency power amplifier IC specifically designed for radio, tape-recorder use etc. The features of LA4550 are low quiescent current, built in 2 channels for stereo and bridge mode operation, excellent ripple rejection, good channel separation, negligible pop-up noise during power ON/OFF. The LA4550 can
Class AB Audio Power Amplifier. Class AB amplifier is an amplifier configuration that stands somewhere between Class A and Class B configurations. A small diode biasing voltage keeps the output transistors ON even if there is no input signal. The transistors will operate normally in their active region for any small input signal.In simple words,
TDA2822 amplifier circuit ( BTL & Stereo ). TDA2822 is a monolithic integrated audio amplifier circuit that can be configured in stereo mode or bridge mode (BTL). The IC has low crossover distortion, low quiescent current and is available in 16 pin power DIP package. The TDA2822 can be operated from a supply voltage range
100W MOSFET power amplifier. A 100W MOSFET power amplifier circuit based on IRFP240 and IRFP9240 MOSFETs is shown here. The amplifier operates from a +45/-45 V DC dual supply and can deliver 100 watt rms into an 8 ohm speaker and 160 watt rms into a 4 ohm speaker. This Hi-Fi amplifier circuit is suitable
TDA2613 Hi Fi audio amplifier Description. A 6 watt audio amplifier circuit using TDA2613 is shown here. TDA2613 is an integrated Hi-Fi audio amplifier IC from Philips Semiconductors. The IC is switch ON / switch OFF click proof, short circuit proof, thermally protected and is available in 9 pin single in line plastic package. In
30 Watts Audio amplifier Circuit Description. A 30 watt audio amplifier circuit using TDA2040 is shown here. TDA2040 is a Class AB monolithic integrated audio amplifier available in Pentawatt package. The IC has low harmonic distortion, low cross over distortion and has a built in circuitry for short circuit protection. In the circuit two TDA2040
10 Watts MOSFET Amplifier Description. The diagram shown here is of a 10W MOSFET amplifier circuit that requires only a single supply. Single rail supply is seldom used in Class-B power amplifiers. Anyway, for low power applications like this it’s quite fine. Actually I got this circuit from an old cassette player that is still
Car Audio Amplifier Circuit Description. A simple low power car stereo amplifier circuit based on TDA 2003 is shown here. The circuit uses cheap, readily available components and it is very easy to construct. TDA2003 is an integrated car radio amplifier from ST Micro electronics that has a lot of good features like short circuit
A simple and easy to build 50 watt MOSFET audio amplifier circuit is shown below. The circuit uses easily available components and provides excellent sound quality . Description: The first stage of the amplifier is a differential amplifier based on transistors Q1 and Q2. Capacitor C8 is the input DC decoupler, R1 limits input
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
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
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.
Bridge Amplifier The circuit given below is a bridge audio amplifier circuit using ICÂ 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
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
