Quadrature oscillator is another type of phase shift oscillator. This circuit produce two sine wave signal. One of them is shifted 90 degree from the other signal. The output that shifted 90 degree is called cosine signal and the other is called sine circuit has two output. Here is the circuit :

This circuit has three phase shifter sections. Each section is set to generate 90 degree phase shift. The frequency f would be equal to 1/2[pi]RC because R3C3=R2C2=R1C1. The value of the components might variate within their tolerance because when this circuit is tested, it generate 1.65 kHz rather than calculated 1.59 kHz. [Schematic diagram source: Analog Application Journal, August 2000]

# Quadrature Sinewave Oscillator

**Possibly Related to "Quadrature Sinewave Oscillator" Circuits**

- Bubba Oscillator

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Phase shift oscillators uses capacitors to shift the phase of a signal coming from the output of an amplifier. If the phase shifting match the frequency, then a positive feedback will be produced a continuous sine waveform. Here is the … Continue reading →... - Oscillator With Quadrature Output Using 567 IC

Oscillator circuit is an electronic circuit that produce a periodic signal. The term quadrature refers to a fourth (1/4) phase shift of full wave cycle (1/4 of 360′ = 90′). In square wave oscillator, a quadrature simply means a 1/4 … Continue reading →... - Single Transistor Variable 0-180 Deg Phase Shifter

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This is a Sine Wave Oscillator circuit. This circuit as known as amplitude-stabilized sine-wave oscillator. It can gives high purity sine-wave output down to low frequencies with minimum circuit complexity. This circuit has a several advantages such as it does … Continue reading →...