oscillator circuits

Explore the fundamentals of oscillator circuits with detailed explanations and circuit diagrams. In this series of posts, we cover the working principles of various oscillators, including the Hartley Oscillator, Tank/Resonant Circuit, Wien Bridge Oscillator, and RC Phase Shift Oscillator. Perfect for electronics students and enthusiasts, these posts provide a clear understanding of how each oscillator operates and its applications in generating stable waveforms.

How Hartley Oscillator Circuit works?

Learn the Basics First!

Prof. Dattaraj Vidyasagar
February 18, 2022
January 1, 2024

In Hartley Oscillator, the combination of L-C is used to produce high output frequency. It consists of one transistor, a tank circuit and the positive feedback to produce oscillations. Its circuit diagram is given below.

How Tank or Resonant Circuit Works?

Learn the Basics First!

Prof. Dattaraj Vidyasagar
February 18, 2022
March 4, 2024

In LC oscillators, combination of inductor (L) i.e. coil and capacitor (C) are used. When we connect inductor (L) in parallel with capacitor (C), this combination is called tank circuit. We shall understand the working of tank circuit first.

How Wien Bridge Oscillator works? Complete working with circuit

Learn the Basics First!

Prof. Dattaraj Vidyasagar
February 18, 2022
January 4, 2024

The Wien Bridge Oscillator circuit is an RC oscillator which uses the basic property of Wien Bridge Circuit. It uses to stage amplifier circuit and leading-lagging RC network, as shown in the following block diagram.

How RC Phase Shift Oscillator works? Complete working with circuit

Learn the Basics First!

Prof. Dattaraj Vidyasagar
February 18, 2022
January 1, 2024

The RC Phase shift oscillator uses common emitter configuration i.e. CE configuration of transistor. It produces 180° phase shift in addition to the phase shift of 180° by the transistor. So we get total 360° phase shift to produce positive feedback.