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Using an Adjustable Power Supply with Tracking Outputs

Posted by Bill Martin on May 15, 2017 12:50:08 PM

Many op-amp circuits used in analog applications, such as signal conditioning for high bit count analog-to-digital converters require the use of both positive and negative power supply voltages, as shown in Figure 1. Supplying both positive and negative voltages allows input signals and output signals to swing both positive and negative. You could power these circuits with an adjustable power supply with two outputs and adjust them separately—one to the positive rail voltage, say +12 VDC or +15 VDC and the other to a similar negative voltage.

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Topics: Adjustable power supply, DC Power-Supplies, op amp, R&D

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