TDA7294 Stereo Amplifier PCB only
Price Rs 119.00 Each
TDA7294 Assembled & Tested amplifier board
Price Rs 749.00 Each
TDA7294 STEREO AMPLIFIER BOARD
New PCB having 2 x TDA7294 ic and Power Supply.
4700uf x 2 Capacitors and GBU 10 Ampere Rectifier.
Just Add a Transformer and your High Power Stereo Amplifier is ready.
the Same Reliable Circuit of Tusker just Double the power.
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.)
And now you will get 2 of them on 1 pcb.
* as per TDA7294 STMicroelectronics datasheet.
Only 1 channel is described, the other channel works the same.
Power Supply Rectifier - Bridge Rectifier D1 ( GBU1010 or GBU810 ) is used to rectify the incoming
AC Voltage in to DC, the DC is Further smoothed by Capacitor C1 and C2 ( 4700uf 50v )
Amplifier - 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 & C3. R2 defines the input impedance.
R3 & 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) - R7 keeps ic U1 in active mode by providing positive 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.
PCB designed with thick copper tracks & large solder pads to facilitate straightforward placement and soldering of components.