How to make powerful amplifier. using TDA2030 ic. best amplifier. diy ultra bass amplifier. simple and very useful.
Build powerful amplifiers very easily.
This circuit is very durable. This amplifier can be made at low cost. Hope you like this video. And if you want to get more interesting videos like this
DIY 2.1 Class AB Hi-Fi Audio Amplifier - Under $5
Hey everyone! Today I'm going to show you how I built an Audio Amplifier for a 2.1 channel system (Left-Right and Subwoofer). After nearly 1 month of research, designing, and testing, I have come up with this design.
In this instructable, I'll walk you through the amplifier design process. First, I'll show you how to select the perfect IC for your project. Then, I'll show you how to find the right values for all of the components in the circuit, and how to change the gain and other parameters. Finally, in the end, I will tell you some tips to remove any type of noise.
After going through the entire instructable, anyone can design their own amplifier for different applications. I will try to make this instructable as brief as possible and easy to understand for everyone.
Okay enough for the introduction. Let's get started
Okay, so anyone can confuse between various options available for audio amplifier ICs. It's a difficult task to go through several datasheets.
While selecting an IC, consider your expectation from the amplifier and purpose of your project. If you want a high wattage amplifier with the best in class sound quality then go for TDA7294 or LM3886. But, if you just want to drive a 5W, 10W or 20W speaker than the 4th and 5th option are best for you. You can also consider LA4440 if you want a simpler circuit (both left and right channel in a single IC).
Generally, you should pick an amplifier that can deliver power equal to twice the speaker's power rating. This means that a speaker with an impedance of 8 ohms and a rating of 5 watts will require an amplifier that can produce 10 watts into an 8-ohm load. For a stereo pair of speakers, the amplifier should be rated at 10 watts per channel into 8 ohms.
Let's find out the best values for the components in the circuit. I'll use the schematic above, which is the same as the one in the datasheet, but with a few modifications to set gain, bandwidth and help filter out noise.
1. Gain
The circuit in datasheet has a gain of 33 and will cause distortion. A good gain to use for home listening is around 27 to 30dB. This setting isn't high enough to cause distortion and will give you a good range of volume.
A Zobel network helps to prevent oscillation that can occur from the parasitic induction of speaker wires. It also acts as a filter to prevent radio interference picked up by the speaker wires from getting to the inverting input via the feedback loop.
C6 and R8 form a Zobel network at the amplifier's output.
C6 = 100nF and R8 = 10ohms, which gives a cutoff freq (fc) of:
fc = 1/(2*pi*R*C)
fc = 159KHz
159 kHz is above the 20 kHz limit of human hearing and well below radio frequencies, so these values will work fine. If the amplifier oscillates, R6 will be passing high currents to the ground so it should have a power rating of at least 1 Watt.
Capacitor C7 in fig. is used to set the bass for the speakers, higher the capacitor value better the bass response of the speakers. You can also use a variable capacitor to change the bass manually. (This bass is not related to subwoofer)
Tip: When I was building this amplifier, I doubt why we are using those extra capacitors and resistors, what they do, and what if we remove them. You can't ignore these questions if you're an electronics enthusiast. Go through page 10 section 4.3 in the datasheet to get a rough idea.
But I highly recommend this awesome tutorial by Circuit Basics. This article covers all the required details in depth.
If you have an audio wire (with jack) or earphones, then a multimeter is the best option to check the connectivity and to find out G-L-R connectivity. If you don't have an audio jack wire then you can use male or female connectors.
Connect 3.5mm jack to phone and other side open wires to the amplifier. Left to left side amplifier and right to right side amplifier with common grounds.
Check the attached photos for reference.
Start building with only one channel of our stereo amplifier. Carefully build the circuit on perfboard, you can take the help of PCB designs available in the datasheet. If you have doubts, you can first use a breadboard to check the circuit. But remember assembling it on the breadboard will have many open wires which may lead to a lot of noise in the speaker. So, don't think that circuit is wrong when you get buzz or hum.
Add a Potentiometer before capacitor C2 (Step 4 Fig.) for volume control, it's also very effective to reduce distortion. I used a trimpot for this se and permanently set the value of trimpot such that there will be no distortion at max phone volume.
After checking and testing the first channel, repeat the process and clone the exact same circuit on the same or another perfboard. Now you have two mono amplifiers, connect left channel wire to one amp, and right channel wire to the other amp with common ground to both. Use different trimpot for each channel and set the same trimpot value for both channels so that each channel will have the same volume.
You can use a potentiometer (instead of trimpot) if you want to change the amplifier's volume often. I suggest you to use a Dual Taper Potentiometer to manually control the Left and Right audio at the same time.
Power supply: The power supply you are going to use should be double the power required i.e. For two 5W speakers there should be a 20W power supply for best results.
How to make powerful amplifier. using TDA2030 ic. best amplifier. diy ultra bass amplifier. simple and very useful.
Build powerful amplifiers very easily.
This circuit is very durable. This amplifier can be made at low cost. Hope you like this video. And if you want to get more interesting videos like this
DIY 2.1 Class AB Hi-Fi Audio Amplifier - Under $5
Hey everyone! Today I'm going to show you how I built an Audio Amplifier for a 2.1 channel system (Left-Right and Subwoofer). After nearly 1 month of research, designing, and testing, I have come up with this design.
In this instructable, I'll walk you through the amplifier design process. First, I'll show you how to select the perfect IC for your project. Then, I'll show you how to find the right values for all of the components in the circuit, and how to change the gain and other parameters. Finally, in the end, I will tell you some tips to remove any type of noise.
After going through the entire instructable, anyone can design their own amplifier for different applications. I will try to make this instructable as brief as possible and easy to understand for everyone.
Okay enough for the introduction. Let's get started
Okay, so anyone can confuse between various options available for audio amplifier ICs. It's a difficult task to go through several datasheets.
While selecting an IC, consider your expectation from the amplifier and purpose of your project. If you want a high wattage amplifier with the best in class sound quality then go for TDA7294 or LM3886. But, if you just want to drive a 5W, 10W or 20W speaker than the 4th and 5th option are best for you. You can also consider LA4440 if you want a simpler circuit (both left and right channel in a single IC).
Generally, you should pick an amplifier that can deliver power equal to twice the speaker's power rating. This means that a speaker with an impedance of 8 ohms and a rating of 5 watts will require an amplifier that can produce 10 watts into an 8-ohm load. For a stereo pair of speakers, the amplifier should be rated at 10 watts per channel into 8 ohms.
Let's find out the best values for the components in the circuit. I'll use the schematic above, which is the same as the one in the datasheet, but with a few modifications to set gain, bandwidth and help filter out noise.
1. Gain
The circuit in datasheet has a gain of 33 and will cause distortion. A good gain to use for home listening is around 27 to 30dB. This setting isn't high enough to cause distortion and will give you a good range of volume.
A Zobel network helps to prevent oscillation that can occur from the parasitic induction of speaker wires. It also acts as a filter to prevent radio interference picked up by the speaker wires from getting to the inverting input via the feedback loop.
C6 and R8 form a Zobel network at the amplifier's output.
C6 = 100nF and R8 = 10ohms, which gives a cutoff freq (fc) of:
fc = 1/(2*pi*R*C)
fc = 159KHz
159 kHz is above the 20 kHz limit of human hearing and well below radio frequencies, so these values will work fine. If the amplifier oscillates, R6 will be passing high currents to the ground so it should have a power rating of at least 1 Watt.
Capacitor C7 in fig. is used to set the bass for the speakers, higher the capacitor value better the bass response of the speakers. You can also use a variable capacitor to change the bass manually. (This bass is not related to subwoofer)
Tip: When I was building this amplifier, I doubt why we are using those extra capacitors and resistors, what they do, and what if we remove them. You can't ignore these questions if you're an electronics enthusiast. Go through page 10 section 4.3 in the datasheet to get a rough idea.
But I highly recommend this awesome tutorial by Circuit Basics. This article covers all the required details in depth.
If you have an audio wire (with jack) or earphones, then a multimeter is the best option to check the connectivity and to find out G-L-R connectivity. If you don't have an audio jack wire then you can use male or female connectors.
Connect 3.5mm jack to phone and other side open wires to the amplifier. Left to left side amplifier and right to right side amplifier with common grounds.
Check the attached photos for reference.
Start building with only one channel of our stereo amplifier. Carefully build the circuit on perfboard, you can take the help of PCB designs available in the datasheet. If you have doubts, you can first use a breadboard to check the circuit. But remember assembling it on the breadboard will have many open wires which may lead to a lot of noise in the speaker. So, don't think that circuit is wrong when you get buzz or hum.
Add a Potentiometer before capacitor C2 (Step 4 Fig.) for volume control, it's also very effective to reduce distortion. I used a trimpot for this se and permanently set the value of trimpot such that there will be no distortion at max phone volume.
After checking and testing the first channel, repeat the process and clone the exact same circuit on the same or another perfboard. Now you have two mono amplifiers, connect left channel wire to one amp, and right channel wire to the other amp with common ground to both. Use different trimpot for each channel and set the same trimpot value for both channels so that each channel will have the same volume.
You can use a potentiometer (instead of trimpot) if you want to change the amplifier's volume often. I suggest you to use a Dual Taper Potentiometer to manually control the Left and Right audio at the same time.
Power supply: The power supply you are going to use should be double the power required i.e. For two 5W speakers there should be a 20W power supply for best results.
No comments:
Post a Comment