The single power changing into dual power circuit diagram by TDA2030

Published:2011/5/16 21:58:00 Author:Ecco | Keyword: single power , dual power | From:SeekIC

The circuit is shown as the chart, R1 and R2 with the equal resistance form a voltage divider, so that the upper and lower voltage are equal. The mid-point of the divider is connected to the op amp inverting input end, the op amp is connected as a voltage follower, so that the potential on O 'and O side is equal. O 'side is the virtual point, the place connected to input supply must be isolated. If the bipolar power supply is directly out from the R1, R2, the resistance of source is higher, the load capacity is poor, the practical value is little. After using the operational amplifier, two output powers have low internal resistance, the load capacity is strengthened.



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