Asadi, Farzin2024-07-122024-07-1220231559-811X10.1007/978-3-031-25122-1_62-s2.0-85153076332https://doi.org/10.1007/978-3-031-25122-1_6https://hdl.handle.net/20.500.12415/7323An Operational Amplifier, or Op Amp for short, is fundamentally a voltage amplifying device designed to be used with external feedback components such as resistors and capacitors between its output and input terminals. These feedback components determine the resulting function or “operation” of the amplifier and by virtue of the different feedback configurations whether resistive, capacitive or both, the amplifier can perform a variety of different operations, giving rise to its name of “Operational Amplifier”. All of the circuits in this chapter are designed with the 741 Op Amp. This chapter studies some of important circuits that can be made with Op Amps and 555 timer IC. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.eninfo:eu-repo/semantics/closedAccessFeedback AmplifiersIntegrated CircuitsTiming CircuitsAmplifying DevicesFeedback ConfigurationInput TerminalsOp AmpsOutput And InputsOperational AmplifiersBook Chapter165N/A105