Example: barber
Single-Supply Operation of Operational Amplifiers
output to swing within 2V of the power supply, making it possible to output –13V to +13V with ±15V supplies. Figure 1b shows the same unity-gain follower operated from a single 30V power supply. The op amp still has a total of 30V across the power supply terminals, but in this case it comes from a single positive supply. Operation is otherwise
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