Simple 1W Audio Amplifier

[transistor495]

Here's a simple highly stable audio amplifier using TDA7052 high performance BTL IC. It doesn't need any external components..

 

[Analog]

Are you asking, or telling?

 

[audioguru]

The TDA7052 is spec'd for 1W at 10% distortion (sounds very bad) into 8 ohms with a 6V supply.
With a 9V supply it should give an output of 2W at clipping.

But when its output is 2W then the poor little thing will get too hot.

 

[transistor495]

Distortion figures of TDA7052 is same or better than all other amps on the category. Device is designed for typical 6-9V supply without need of any heat sink.

Advantages:

1. No external components.
2. Excellent stability.
3. Low power consumption and high output power.
4. Great Supply Ripple Rejection (50db).
5. Low output noise voltage.
A great performer for portable applications and can be assembled within minutes.

 

[Mikebits]

Distortion figures of TDA7052 is same or better than all other amps on the category. Device is designed for typical 6-9V supply without need of any heat sink.

Advantages:

1. No external components.
2. Excellent stability.
3. Low power consumption and high output power.
4. Great Supply Ripple Rejection (50db).
5. Low output noise voltage.
A great performer for portable applications and can be assembled within minutes.

Sounds like a commercial advertisment.

What AG said is correct. High distortion at 1W.

 

[transistor495]

Sounds like a commercial advertisment.

Haven't you noticed this
https://www.electro-tech-online.com/threads/advertising-available.87425/#post682187

 

[audioguru]

The datasheet for ther TDA7052 has no curves. What are they hiding??
The max distortion it a whopping 1% at an output of only 0.1W.

 

[ashura517]

hey im doing a school project using TDA 7052A. How do we design a 0.5W audio amplifier using that IC with mute and volume control? Active filter.

 

[transistor495]

Use a digital log pot for dc controlled volume and mute and doesn't have a one click mute function I think. 7052A is used normally in TV sets with remote controlled volume.

7052 family is running successfully over 15 years.

 

[audioguru]

hey im doing a school project using TDA 7052A. How do we design a 0.5W audio amplifier using that IC with mute and volume control? Active filter.

The TDA7052A has a built-in DC volume control at pin4 that has a wide range of attenuation. Gain is +35.5dB if pin4 is +1.4V or more and is -44dB if pin 4 is +0.5V. The sound is muted (gain= -71dB) when pin 4 is +0.4V or less.

It is all on the datasheet.
The datasheet even has a schematic of a DC volume control and a 0.88W amplifier that can be reduced to 0.5W if the 6V power supply voltage is reduced a little.

You can't design an active filter unless you have details about it.

 

[sllimbri]

7052 circuit help

Here's a simple highly stable audio amplifier using TDA7052 high performance BTL IC. It doesn't need any external components..

Ok, so I bought a 7052 and built this curcuit. I have disconnected the wires that went to my speaker, 8ohm, 0.5W. Which wire needs to go to the amp input? Where would my other wire go? Ground?
Thanks.

 

[audioguru]

Ok, so I bought a 7052 and built this curcuit. I have disconnected the wires that went to my speaker, 8ohm, 0.5W. Which wire needs to go to the amp input? Where would my other wire go? Ground?
Thanks.

The TDA7052 is an amplifier to drive a speaker, not drive another amplifier.
Its outputs must never be connected to ground.

What is your signal source? Microphone? CD player?
You probably need a preamp circuit, not a TDA7052 power amp circuit.

 

[sllimbri]

7052 circuit

Sorry, I'm not being very clear. I am trying to boost the output of a phone answering machine. I disconnected the wires that went to the speaker. I am wondering which of these two wires need to go to the amp circuit input and would the other wire go to ground?

Thanks.

 

[audioguru]

A TDA7052 power amplifier has almost the same low output power as the amplifier in an answering machine. You might not notice any difference.

The TDA7052 has a voltage gain of almost 100 so it will be severely overdriven unless the input is attenuated.

If the TDA7052 has a separate power supply from the answering machine then it might not make any difference which wire is signal and which wire is ground.
But the output of the answering machine might not work without an 8 ohm load.

 

[SURROUND]

tda 7052 amp

using aattenuater for line out level can help you out. one wire should come from amp output electrolitic cap that should connect to 7052 in. other wire is ground.
**broken link removed**

 

[sllimbri]

7052 amp

Ok, I'm really confused. With the circuit connected as I described, all i get is a loud buzzzzz. What exactly is an attenuator for? If the answering machine won't work without the 8ohm load, does anyone have a suggestion on how i can boost the volume up?

 

[sllimbri]

All i get is a loud buzzz. If the macine won't work without the 8ohm load, what else can I do to boost the volume? What is an attenuator?

 

[audioguru]

Does your new amplifier make a loud buzzz when its input is not connected to the answering machine?

 

[sllimbri]

7052 amp

A loud buzz when connected to answering machine, low buzz when not.

 

[audioguru]

Your new amplifier should be completely silent when its input is not connected to anything. Try powering it from a 6V to 9V battery.