A typical ring oscillator consists of an odd number of NOT gates arranged in a loop, with its output alternating between two voltage levels to represent true and false. These inverters are connected in a series, with the output of the last feeding back to the first. Ring oscillators offer
Types of electronic oscillators, relaxation oscillator, harmonic oscillator, condition for oscillations.
The Barkhausen criterion is a mathematical condition to determine oscillation frequency. Sometimes it is also used to determine if the circuit is stable or not.
Relaxation oscillator, Square wave oscillator, RC time constant, Free running frequency.
Square and Triangular wave generator, Relaxation oscillator vs astable multivibrator, Open loop vs closed loop triangular waveform generator
A voltage-controlled oscillator (VCO) is an electronic oscillator whose output frequency is determined by an input voltage. Frequency is the rate at which the phase changes. A voltage-controlled oscillator enables adjustments to this rate of phase change. Usually, VCOs are derived from known oscillator circuits. Various applications include telecommunications, signal
Piezo-electricity, Mechanical resonant, Series resonance, Parallel Resonance, Colpitts oscillator using crystal, Q-factor of crystal oscillator
Wein bridge circuit, Frequency response, Loop gain, Amplitude limiter circuit
Single RC stage phase shift, 3-stage RC phase shift oscillator, Barhausen-criteria
The 555 timer, introduced in 1972 by Signetics, is a timing generation IC which is popular for its simplicity, affordability, and versatility.
Q factor, Damping factor, Center / Resonance frequency, Condition for oscillations, Active LC oscillator circuit, Tuned circuit, LC Tank circuit