signal generator - Electronics Area https://electronicsarea.com Electrical and Electronics Tutorials and Circuits Tue, 12 Nov 2024 17:10:10 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.26 Sinusoidal oscillator (basic structure) https://electronicsarea.com/sinusoidal-oscillator-basic-structure/ https://electronicsarea.com/sinusoidal-oscillator-basic-structure/#respond Fri, 17 Jan 2020 15:45:17 +0000 http://electronicsarea.com/?p=465 Basic structure of the sinusoidal oscillator

The sinusoidal oscillator basic structure consists of an amplifier (A) and a selective frequency network (ß) connected in a positive feedback loop

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]]> https://electronicsarea.com/sinusoidal-oscillator-basic-structure/feed/ 0 Crystal Oscillators – Piezoelectric Oscillator. Equivalente circuit https://electronicsarea.com/crystal-oscillators/ https://electronicsarea.com/crystal-oscillators/#respond Fri, 19 Sep 2014 00:57:31 +0000 http://electronicsarea.com/?p=505 The Crystal Oscillators (Piezoelectric Oscillator) A quartz crystal has a property called: piezoelectric effect. This effect causes, by applying a mechanical pressure on the surface of the crystal, that a voltage is developed on the opposite sides. In a similar way, a voltage applied on the faces of the crystal produces a mechanical distortion on their surface. An AC voltage causes [...]

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]]> https://electronicsarea.com/crystal-oscillators/feed/ 0 LC Oscillator – Inductance – Capacitance Oscillator https://electronicsarea.com/lc-oscillator/ https://electronicsarea.com/lc-oscillator/#respond Fri, 19 Sep 2014 00:46:34 +0000 http://electronicsarea.com/?p=497 LC oscillator: Inductance – Capacitance Oscillator A simple oscillator can be built with an amplifier stage and an inductive-capacitive network (LC) to provide an offset of -180° The oscillation frequency can be freely adjusted or tuned on a range of frequencies from 100kHz to a few hundred MHz by changing only the value of C or L. These LC [...]

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]]> https://electronicsarea.com/lc-oscillator/feed/ 0 Phase Shift Oscillator https://electronicsarea.com/phase-shift-oscillator/ https://electronicsarea.com/phase-shift-oscillator/#respond Fri, 19 Sep 2014 00:37:55 +0000 http://electronicsarea.com/?p=488 The Phase Shift Oscillator The phase shift oscillator, whose basic structure is described in the picture 1.a  has a a negative gain amplifier (-K) and a feedback network consisting of a third order RC section in cascade. The oscillation condition requires that the feedback network produce a phase shift of 180° to be consistent with the negative gain amplifier which [...]

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]]> https://electronicsarea.com/phase-shift-oscillator/feed/ 0 Wien-bridge Oscillator with Op Amp https://electronicsarea.com/wien-bridge-oscillator-op-amp/ https://electronicsarea.com/wien-bridge-oscillator-op-amp/#respond Fri, 19 Sep 2014 00:26:10 +0000 http://electronicsarea.com/?p=478 Wien-bridge Oscillator using Op-Amp The Wien-bridge oscillator, as shown on the basic outline of the diagram below, consists of an Operational Amplifier (OA) in a non-inverting configuration with gain 1+R2/R1 and a RC feedback network with the following transfer function: Where: Combining the first and the second equation we get: The loop gain (BA) is: The Barkhausen criterion [...]

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]]> https://electronicsarea.com/wien-bridge-oscillator-op-amp/feed/ 0 Nonlinear Amplitude Control of a Sinusoidal Oscillator https://electronicsarea.com/nonlinear-amplitude-control-of-a-sinusoidal-oscillator/ https://electronicsarea.com/nonlinear-amplitude-control-of-a-sinusoidal-oscillator/#respond Thu, 18 Sep 2014 04:00:47 +0000 http://electronicsarea.com/?p=472 Nonlinear Amplitude Control of a Sinusoidal Oscillator In any practical oscillator, the loop gain (ßA) must be slightly greater than unity to prevent that the tolerance parameters of components, aging, temperature effects, etc., make that ßA < 1 and the circuit not meet one of the oscillation conditions specified in the equation: In which case the [...]

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]]> https://electronicsarea.com/nonlinear-amplitude-control-of-a-sinusoidal-oscillator/feed/ 0 Sinusoidal oscillators – Basic principles https://electronicsarea.com/principles-sinusoidal-oscillators/ https://electronicsarea.com/principles-sinusoidal-oscillators/#respond Thu, 18 Sep 2014 03:27:31 +0000 http://electronicsarea.com/?p=459 Sinusoidal Oscillators Sinusoidal oscillators play an important role in electronic systems that use harmonic signals. Despite that, in many instances are known as linear oscillators, it is necessary to use some non-linear feature to generate a sine wave output. In fact, the sinusoidal oscillators are essentially non-linear which complicates the technical design and analysis of such circuits. The [...]

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