TDA7294 Amplifier PCB only
Price Rs 79.00 Each
TDA7294 Assembled & Tested amplifier board
Price Rs 499.00 Each
TDA7294 Amplifier Board
New Version of PCB having space for fitting heatsinks easily.
Now you can fit Many Types of Heatsinks on the PCB or Fit many pcbs on a big heat sink to make 2.1 or 4.1 or 5.1 Amplifier.
( BEWARE - Some people are Selling low quality copies of my design )
What TUSKER has achieved in this short period is exceptional.
Tusker is simple, easy to make and delivers high power with many types of speakers.
You may ask why the name “TUSKER”, after all it is a small pcb.
What can I say, small number of Tuskers ( Not the Truck, but Elephants ) still roam the forests of our country, they are Majestic.)
* as per TDA7294 STMicroelectronics datasheet.
CLICK HERE to download TDA7294 Amplifier circuit diagram
The circuit is quite simple, main job of amplification is done by ic U1 and rest are the supporting components.
Input signal is fed to pin no.3 (Non Inverting Input) through R1 & C2. R7 defines the input impedance.
R2 & R4 connected to Pin no.2 (Inverting input) set the closed loop gain. Changing the value of any one these resistors will change the gain of the amplifier.
Pin no.9 (Stand by) - R6 keeps ic U1 in active mode by providing positve voltage.
Pin no. 7, 13 are positive supply, Pin no. 8, 15 are negative supply and 1, 4 are ground pins. Pin no.14 is the output pin.
Mute Function - Pin no.10 (Mute) is connected to JP2. To use the mute function replace JP2 with a switch.
Metal Tab of ic U1 is connected to negative supply internally, so proper insulation is necessary when fitting ic U1 on heatsink.
Sample Video showing process of fitting Metal tab ic on heatsink.
PCB designed with thick copper tracks & large solder pads to facilitate straightforward placement and soldering of components.