Design and Implementation of Op-Amp-Rc Sine Wave Oscillator

Humood, Khalid Awaad; Saleh, Adham Hadi; Mohamed, Wurod Qasim

doi:10.24237/djes.2015.08107

Cited by 2 publications

(4 citation statements)

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“…Therefore, functionally and technically it can be used as a medium of learning. Table 2 compares the results of theoretical calculations, simulations (using Multisim 14.0), real measurements on an Analog Oscilloscope, and Frequency Counter, where the results are in line with [3].…”

Section: Technical Testingmentioning

confidence: 59%

“…The circuit in Figure 1(a) is a three-stage RC ladder network that forms the basis of a complete phase-shift RC Oscillator (Figure 1b). The value of β can be obtained through the division between Rf and Rg where the ratio of Rf and Rg must be 29 : 1 [3]. If the ratio is lower than 29, the oscillator will not oscillate.…”

Section: Oscillator Designmentioning

confidence: 99%

“…while Rg is chosen as 1 kΩ and Rf = 30 kΩ. Therefore, the gain obtained was 30 which fulfilled the phase-shift RC requirement, namely α ≥ 29 [3]. An Analog Oscilloscope (GW INSTEK GOS-620FG 20 MHz) and a Frequency Counter (GW INSTEK GFC-8010H 120 MHz) are connected to the output ports of the phase-shift RC Oscillator trainer kit.…”

Section: Technical Testingmentioning

confidence: 99%

“…There are three types of analog Oscillator, namely Resistor -Capacitor (RC), Inductor -Capacitor (LC), and relaxation [1], [2]. Furthermore, there are various types, including phase-shift RC which has a total phase shift of 180 o in the circuit [3]. This phase inverting circuit was formed by three RC circuits using single feedback.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Development of Educational Kit for Practical Course in the Topic of Phase-Shift RC Oscillator

Fuada

2022

Int. J. Onl. Eng.

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This research develops a phase-shift RC Oscillator trainer kit that can be used to give undergraduate students an understanding of one of the materials related to analog circuit practicum. The Oscillator is one of the essential subtopics to be examined thoroughly by electrical engineering students. Furthermore, the Resistor and Capacitor modules were provided separately to be connected to the trainer through jumper cables. The phase-shift RC circuit in the trainer kit used a single Op-Amp 741 while the Network model utilized an Inverting Amplifier to determine the gain which must be ≥ 29 times, therefore, Rfeedback ≥ 29 Rgain (Rfeedback = 30 kΩ and Rgain = 1 kΩ). Two tasks in this learning media were completed by students, namely measuring the output frequency and observing the phase shift. The output signal on this trainer kit was observed using only an Oscilloscope and a frequency counter. The phase inverter of the phase-shift RC Oscillator adjusts the output signal by 180o and sends feedback to the input, therefore, there is positive feedback. Meanwhile, the trainer kit had an output frequency specification of ~649 Hz (C = 100 nF, R = 1 kΩ) and it shifts the phase by 60o on each RC network. Using 2 and 3 R-C networks, the phase shifts were 120o and 180o, respectively. The trainer kit was packaged in a box made of acrylic with dimensions l x w x h = 20 cm x 28 cm x 5 mm. Through a questionnaire consisting of 13 criteria, this trainer kit was declared valid, namely r count > 0.2960 (5%) and reliable (Cronbach's alpha > 0.60, which was 0.732) to be used as a learning media based on user responses, namely students (N = 35). In the context of technical education, this trainer kit also supports the efficient implementation of practicum without compromising the learning objectives due to the ease of operation (plug & play through jumper cables) compared to fully assembling the circuit using a project board.

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Section: Technical Testingmentioning

confidence: 59%

Section: Oscillator Designmentioning

confidence: 99%

Section: Technical Testingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of Educational Kit for Practical Course in the Topic of Phase-Shift RC Oscillator

Fuada

2022

Int. J. Onl. Eng.

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Design Wien Bridge Oscillator for VLF to VHF Using Practical Op – Amp

Ahmed,

Saleh,

Humood

et al. 2024

IJEER

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An electronic oscillator is generally a major part of electrical, electronic and communications circuits and systems and it is can be divided into linear and nonlinear families. Wien Bridge is a type of RC phase shift oscillators mostly used for around 1MHz and its design adopts positive feedback technology. In this research, novel look the reasons for the inability to achieve high frequencies was understanding and the ambiguity was removing from the determinants of obtaining a high frequency signal for this type of oscillators, also, new results were obtained with a unique presentation. The output formula for the oscillation resonant frequency was deriving based on the oscillator’s theory. The design has beaning successfully achieved by using a practical high-performance op-amp and from the simulation results the frequency bandwidth was 50.7211 MHZ from,VLF (9.83 HZ ) to VHF (50.73 MHZ) and. These unique and interesting scientific findings were encouraging.

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Design and Implementation of Op-Amp-Rc Sine Wave Oscillator

Cited by 2 publications

References 0 publications

Development of Educational Kit for Practical Course in the Topic of Phase-Shift RC Oscillator

Development of Educational Kit for Practical Course in the Topic of Phase-Shift RC Oscillator

Design Wien Bridge Oscillator for VLF to VHF Using Practical Op – Amp

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