Audio Power Amplifier 60W with TDA7294 circuit


Posted on Feb 5, 2014

The TDA7294 amplifier module is a monolithic integrated circuit. It is intended for use as an audio class AB amplifier in hi-fi applications. It has a wide voltage range and output current capability, enabling it to supply the highest power into both 4 ohm and 8n ohm loads. With the addition of a handful of parts and a suitable power supply, this


Audio Power Amplifier 60W with TDA7294 circuit
Click here to download the full size of the above Circuit.

module will deliver 50W RMS into 8-ohm with 0. 1% THD. you the user must supply a heavy duty heatsink rated at 1. 4 °C/W. Pin 10 is the MUTE input and pin 9 provides a STANDBY mode. Muting should always take place before standby mode is selected. Connecting these pins permanently to the supply rail (insert links) ensures that the amplifier comes on immediately on power up. Increasing the time constants R3-C6 and R4-C5 may eliminate any switch-on clicks. The IC has internal thermal protection that causes the mute to cut in at 145 °C and switches the amplifier into standby at 150 °C. Do not operate the module without a heatsink. The heatsink tab on the TDA7294 IC is internally connected to the negative supply rail. If the module is mounted inside an earthed metal enclosure then the IC must be insulated from the heatsink. If not, the negative supply rail will be shorted to ground. The maximum supply voltage of the IC is +/-40V. However the maximum dissipation of the IC would be exceeded when using a 4-ohm load at that voltage. Therefore the supply voltage used should be kept down to a safe +/-30V. The mains transformer used to power the module should be rated at a minimum of 80VA. If you want to run two modules in a stereo amplifier you can use a common power supply. In this case the transformer should be rated at 150VA.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Twang-twang circuit
    Portable-nicad-battery-charger
    Four-channel-comparator
    5W 80M Cw Transceiver
    5800 Xpressmusic LCD Screen Display Problem Repair Procedure
    40V dual power supply
    oscillator mcpos400 plus
    using call detector circuit schematic
    Methods for generating Amplitude Modulation
    LM317T Voltage Regulator with Pass Transistor
    Precision QRP Transmitter
    GaAs FET preamp
    PERIOD TO VOLTAGE CONVERTER
    Thermostat controller integrated circuit schematic
    Electronic energy-saving lamp circuit 3



    Top