Figure 0.14, Noninverting Amplifier. The hot side of the input goes to one end of R3. The other side of the input is grounded. The other end of R3 goes to the noninverting input of the op amp. The output of the op amp goes to one end of R2. The other end of R2 goes to the inverting input. The inverting input also goes to one end of R1. The other end of R1 is grounded. The output of the op amp is the hot side of the output of the amplifier circuit. The other side of the output is grounded. Power supply connections are not shown. See text. This completes the verbal description.
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