STA575 200 watt power amplifier circuit diagram
A very simple 200 watt power audio amplifier circuit electronic project can be designed using STA575.
This 200 watt power audio amplifier circuit based on the STA575 is capable to provide a maximum 100 watts output continuous power per channel ( on two channels ) on a 4 or 8 ohms load .
STA575 200 watt power audio amplifier circuit can be set in three states by the Stby/mute pin: Standby ( Vpin 4V).
In the Standby mode all the circuits involved in the signal path are in off condition, instead in Mute mode the circuits are biased but the Speakers Outputs are forced to ground potential.
These voltages can be get by the external RC network connected to Stby/Mute pin.
The same block is used to force quickly the I.C. In standby mode or in mute mode when the I.C. dangerous condition has been detected.
The protection of STA575 power audio amplifier circuit are implemented by the Over Temperature, Unbalance .
To protect the output transistors of the power bridge a power detector is implemented .
To power this STA575 power audio amplifier circuit you’ll need a DC power source that will provide the following output voltages : Vs+ = 28V, Vs- = -23V, VCD+ = 20V, VCD- = -20V and you’ll need a 8 ohms load .
In the table bellow you can see values for electronic parts required by this 200 watt stereo power audio amplifier electronic project .