150 Watt amplifier circuit

This is an economical 150 Watt amplifier circuit featuring two Darlington power transistors, TIP 142 and TIP 147. The circuit is capable of delivering up to 150 W RMS to a 4 Ohm speaker, providing substantial audio output. The TIP 142 and TIP 147 transistors are complementary Darlington pairs, well-known for their robustness, with a current handling capacity of 5 A and a voltage rating of 100V. The circuit employs two BC 558 transistors (Q5 and Q6) as a preamplifier, while the TIP 142, TIP 147, and TIP 41 (Q1, Q2, Q3) work together to drive the speaker. It is designed for durability, allowing assembly on a perf board or through pin-to-pin soldering. The circuit operates with a ±45V 5A dual power supply. The preamplifier section consists of Q4 and Q5, forming a differential amplifier that reduces noise and facilitates negative feedback, enhancing the overall performance of the amplifier. The input signal is fed to the base of Q5 via a DC decoupling capacitor (C2), and feedback voltage is sent to the base of Q4 from the junction of two 0.33-ohm resistors through a 22K resistor. A complementary Class AB push-pull stage is constructed around transistors Q1 and Q2 for loudspeaker driving. Diodes D1 and D2 bias the complementary pair, ensuring Class AB operation, while transistor Q3 drives the push-pull pair, with its base directly coupled to the collector of Q5.

The 1.2 X 60 Watts stereo amplifier circuit utilizes the LM4780 audio amplifier IC, which can provide 60 Watts RMS output power per channel to 8 Ohm speakers. The advantages of this IC include low harmonic distortion compared to other similar amplifiers and a power supply rejection rate of 85 dB. It requires minimal components and features a built-in mute function.

Additionally, a headphone amplifier circuit is described, which comprises only three transistors and can effectively drive headphones. It is simple to construct and can be powered by a 3-volt battery.

Another design is a MOSFET amplifier circuit, which uses two MOSFETs and one transistor, allowing for easy assembly. This circuit can deliver 18 Watts to an 8 Ohm speaker or 30 Watts to a 4 Ohm speaker, with minimal components required.

A 40 Watts amplifier circuit using the TDA1514 IC from Philips is also presented. This high-performance Hi-Fi amplifier requires a dual ±25 volts power supply and offers low total harmonic distortion (THD), a mute standby feature, and thermal protection. It can output 40 Watts to an 8 Ohm speaker, necessitating a proper heat sink for reliability.

Lastly, a 2 X 32 Watts stereo amplifier circuit is constructed using two TDA2050 ICs, each providing 32 Watts in a Class AB configuration. This setup includes features like thermal shutdown, low THD, and short circuit protection, powered by an 18 volts dual power supply.

For further inquiries regarding article content, copyright issues, or other concerns, communication can be directed to the provided email address within 15 days for resolution.This is the cheapest 150 Watt amplifier circuit you can get, I think. Based on two Darlington power transistors TIP 142 and TIP 147, this circuit can deliver a blasting 150 W Rms to a 4 Ohm speaker. Enough for you to get rocked, then try out this. TIP 147 and 142 are complementary Darlington pair transistors which can handle 5 A current and 100V, fam

ous for their ruggedness. Here two BC 558 transistorsQ5 and Q6 are wired as pre amplifier and TIP 142, TIP 147 together with TIP41 (Q1, Q2, Q3) for driving the speaker. This circuit is designed so rugged that this can be assembled even on a perf board or even by pin to pin soldering.

The circuit can be powered from a /-45V 5A dual power supply. You must try this circuit. Its working great. The preamplifier section of this circuit is based around Q4 and Q5 which forms a differential amplifier. The use of a differential amplifier in the input stage reduces noise and also provides a means for applying negative feedback.

Thus overall performance of the amplifier is improved. Input signal is applied to the base of Q5 through the DC decoupling capacitor C2. Feedback voltage is applied to the base of Q4 from the junction of 0. 33 ohm resistors through the 22K resistor. A complementary Class AB push-pull stage is built around the transistors Q1 and Q2 for driving the loud speaker. Diodes D1 and D2 biases the complementary pair and ensures Class AB operation. Transistor Q3 drives the push-pull pair and its base is directly coupled to the collector of Q5. 1. 2 X 60 Watts Stereo Amplifier Circuit is designed using LM4780, an audio amplifier IC that can deliver 60 Watt RMS output power per channel to 8 Ohms speakers.

Advantages of using this IC are low harmonic distortion compared to other IC amplifiers of similar category and a power supply rejection rate of 85db. In addition it require minimum components and a built in mute function. 2. Headphone Amplifier Circuit This is a simple circuit which uses only 3 transistors, that can be used to drive your headphone.

It can be easily built by any one and can be powered using a 3 volts battery. 3. Mosfet Amplifier Circuit -This circuit is designed using two Mosfet`s and one transistor; which makes it an easy to build circuit. It can deliver 18 Watts output power to 8 ohms speaker or 30 watts to 4 ohms speaker; you can do it the way you like it.

Another advantage of this circuit is the minimal use of components. 4. 40 Watts Amplifier using TDA1514 -TDA1514 is a high performance hi fi amplifier from Philips. It requires a dual 25/-25 volts supply. Advantages of using TDA1514 are low THD, mute standby feature, thermal protection and other features. It can deliver 40 watts of output power to an 8 ohm speaker. You need a proper heat sink for the desired reliability of this circuit. 5. 2 X 32 Watts Stereo Amplifier Circuit This circuit is built using TDA2050 which is a 32 Watts Class AB Audio amplifier IC (monolithic).

This IC has many features like thermal shut down, low THD, short circuit protection etc. This circuit uses Two of these IC TDA205o; one for each channel. An 18 volts dual power supply is required to power this circuit. We aim to transmit more information by carrying articles. Please send us an E-mail to wanghuali@hqew. net within 15 days if we are involved in the problems of article content, copyright or other problems. We will delete it soon. 🔗 External reference