To my ears the small TDA2050 chip produces a very good sound which can hold it own against various high quality amplifiers I have used. Using 25 watts of power you can achieve at least 65% efficiency. The amplifier is built around a single integrated circuit (IC), the TDA2050V which is produced by STMicroelectronics. This circuit is a complete application is 2.1 amp, two satellite speakers for TDA and one for the subwoofer, making the 2.1 system, widely used in commercial applications as an amplifier for computers, which may give an increased in its audio system with a stereo amplifier + bass amplifier (subwoofer). The supply has only very slight hum which can only be heard with my AKG headphones when I turn the volume to max and no signal connected. The speaker output plugs are standard three-way binding posts that will accept a 4 mm banana plug, a spade connector or bare wire. For isolation you can use silicon pads or mica and don't forget a spacer for the mounting screw that will secure the chip to the heat sink. One dual secondary (2 x 18VAC / about 160VA) is your friend. Use appropriate fuses and connect the chassis to the mains "earth". It is fairly simple to construct the circuit on a variety of protoboards. This is 2x30W audio amplifier based on TDA2050 and LM1875. First, Iâll show you how to calculate the voltage and current requirements of your power supply, and show you how find a properly sized heat sink. Here is a little update for the TDA2050 Hi-Fi Chip Amplifier project. Most importantly, have a lot of fun by listening to your work. Direct Toner: The text must be readable. Note that the input jacks and speaker binding posts are insulated from the chassis using the supplied nylon spacers. From the data sheet, the TDA2050V is intended for use as a Class-AB hi-fi audio amplifier. The chip will operate within a supply voltage range of +/-4.5V to +/-25V. 99. If we want to design the amplifier circuit, the audio amplifier circuit using the IC TDA2030 is the best choice.Because this IC is inexpensive, very simple to utilize, and apt for electronic beginners. Home » Circuits » Amplifier » Power Amplifier with Subwoofer â TDA2030 and Ne5532 â 2 x 18 Watts + 30 W Bass This circuit is typical of systems sold for 2.1 PC surround systems, left and right channel and subwoofer. For the heat sinks I used a pair that each measured 50 mm x 88 mm with 35 mm fins and rated at 2.9 C/W. This is achieved using the convenient uPC1237 IC. Also below is an updated list of components for the new PCB. Have fun building this one! The power supply generally follows the "snubberized" Gainclone PSU design Carlos Filipe (CarlosFM). Hardware Components. If you do build one, I would be happy to see some photos of your TDA2050 amps. A torroidal transformer with dual 18 Volt secondaries and rated at 120VA (3.3A per secondary) is used. This is achieved using the convenient uPC1237 IC. The goal here is to find the right transformer, which can deliver sufficient voltage and current to drive the amplifier properly. The TDA2050 is a great sounding chip amplifier with lots of power. It is built by using the IC TDA2050V integrated circuit. I've made a layout for a proper and juicy new Power Supply Unit for use with the TDA2050 amplifier project (and the LM1875 which can be used in place of the TDA2050). Discrete ultra-fast rectifiers can also be used at an increased cost. For instance, if the subwoofer within the music system is not generating sufficient bass then this amplifier circuit using TDA2030 IC is very useful to improve the Bass. you can build the circuit easily. This is 2x30W audio amplifier based on TDA2050 and LM1875. If you are looking for the best audio amplifier circuit. I will not make too many comments on the sound as it is ultimately up to the individual listener to decide. Keeping the wires as close as possible to the chassis also helps. when compared with cost wise the ic having 20- 70 rupees ( 1$ ) only. The amp has the ability to produce deep bass, clear mids with a wide sound stage and crisp highs that are not too sharp. The ic will be used for 2.1 ad 5.1 audio system, because of the high-end performance of this ic. Please feel free to comment or to ask any questions that you may have about this amplifier project on the TDA2050 Hi-Fi Chip Amplifier Project (Support) thread. All this allows to make an universal circuit board, suitable for any of these two ICs. The tda2050 datasheet given at the bottom of this page consists of more details on this design. High output power, low distortion, power amp for HiFi Power Amplfier This project which I call a "Mini Gainclone" is a stereo amplifier with an added headphone output. Please refer to your local electrical code for the mains connection requirements. Try keep the signal wiring as short as possible. Direct Toner: The text must be readable. DIY TDA2050 IC Hi-Fi Chip Amplifier. This circuit is constructed by using TDA2030 IC, and this is intended for use as a Low frequency class-AB amplifier. A double pole, double throw (DPDT) switch is shared between both channels and this allows switching the output between speakers output or headphone output. At about 25W of power output the efficiency is about 65%. Jul 22, 2018 - TDA2050 Power Amplifier Circuit schematic . A PDF of the PCB Images is attached below. TDA2050 amplifier circuits TDA 2050 is a monolithic integrated circuit in Pentawatt package, intended for use as an audio class AB audio amplifier. Use separate power supply wiring to each channel. Following components are included in Subwoofer Amplifier Circuit ⦠Amplifier PCB is suitable for both TDA2050 and LM1875 chips. The gain of the circuit is 33 (30 dB) which should work well for most line level sources. Most film type capacitors (polypropylene, polyester, mylar ...) should be a large improvement over electrolytic caps which I don't recommended. I used a protoboard for my amplifier (details below). The PCB layout easily fits on a standard copper clad board or photo PCBs (160 x 100mm). A proper grounding scheme is important to obtain low noise. A PDF of the PCB Image with two boards on one page is attached below. For the enclosure I used a satin black steel 12" x 8" x 3" chassis from Hammond (Model 1441-24). But the combination is my own choice, you can explore it yourself by choosing the combination of TDA2030, TDA2050, and LM1875. $16.99 $ 16. 500mW FM / VHF Transmitter Amplifier / Booster, Audiophile OPA2132 Headphone Amplifier Kit, TDA7000 FM Receiver / TV Tuner / Aircraft Receiver, NJM2035 HI-FI Stereo Encoder / Multiplexer. TDA2050 is a 5-pin Amplifier IC. And for the Subwoofer amplifier, I chose TDA2050 because the amplifier output power is greater than the TDA2030 and LM1875 so that the bass is more pronounced and can be more adjusted. Faulty or incorrect mains wiring can result in death or serious injury! So, on the whole, this complete circuit improves the quality of the sound of your subwoofer by amplifying it. It is a class AB high-quality audio circuit. The TDA 2050 is a monolithic integrated circuit in Pentawatt package, intended for use as an audio class AB audio amplifier. It give about total 200watt RMS on the output. Last update 28 July 2014. KNACRO TDA2050 TDA2030 NE5532 2.1 3-Channel Hi-Fi 60W Subwoofer Amplifier Board 18W+18W+32W Compatible LM1875 AC 9-15V. You will want two star ground points - one for the signal and one for the power. The two ground points should then be connected together through a single connection. The amplifier can be driven by most line-level sources such as an mp3 player, cd player, tuner and so on. This amplifier circuit is very useful for creating frequencies of low tone such that the sound output generated from the speaker is steady with a loud bang but the noise of humming is gone. If we consider a 12-0-12 transformer, it will output 12-0-12V AC if the input supply voltage is 230V. Created 5 July 2009. The TDA 2050 is a monolithic integrated circuit in Pentawatt package, intended for use as an audio class AB audio amplifier. According to the data sheet that comes along with the IC, TDA2050V is ideal for Class-AB based audio hi-fi amplifier. The pin 5 and 3 are used to power the Amplifier IC, and the audio signal to be amplified is given in through pin 1 which is the non-inverting input. This project requires a mains wiring connection (120 or 220V) which you do not want to get in between. The PCB layout must be mirorred to expose the copper. 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