oscillator - Electronics Area https://electronicsarea.com Electrical and Electronics Tutorials and Circuits Thu, 09 May 2024 16:19:55 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.25 Doorbell for Deaf People Circuit using LEDs https://electronicsarea.com/doorbell-for-deaf-people-circuit/ https://electronicsarea.com/doorbell-for-deaf-people-circuit/#respond Wed, 20 Jan 2021 15:30:40 +0000 http://electronicsarea.com/?p=1208 Doorbell for Deaf People.

When a deaf person is alone in a house, it would be very difficult to realize that someone is knocking on the door without any visual warning signal.

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]]> https://electronicsarea.com/doorbell-for-deaf-people-circuit/feed/ 0 LED Sequencer using 4017 Decade Counter (LED Chaser) https://electronicsarea.com/led-sequencer-using-4017/ https://electronicsarea.com/led-sequencer-using-4017/#respond Tue, 08 Sep 2020 12:11:57 +0000 http://electronicsarea.com/?p=1972 LED Sequencer using 4017 Decade Counter (LED Chaser). This circuit has 10 LEDs connected to the decade counter outputs. LEDs light up in sequence. Only one LED is ON at a time

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The post LED Sequencer using 4017 Decade Counter (LED Chaser) appeared first on Electronics Area.

]]> https://electronicsarea.com/led-sequencer-using-4017/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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The post Crystal Oscillators – Piezoelectric Oscillator. Equivalente circuit appeared first on Electronics Area.

]]> 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 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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