Amazon Alexa is a personal assistant device. which can be controlled by our voice. Alexa is available in three variants. That is Echo, Echo dot and Echo plus. Echo Dot – Voice control your music, Get news, weather & more. , Echo Dot is a hands-free, voice-controlled smart device for the home with a built-in speaker. …
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Colpitts oscillator is a type of LC oscillator which is designed for the generation of high frequency sinusoidal oscillations with the radio frequencies. Typically ranging from 10KHz- 300MHz. Colpitts oscillator is designed by and named after an American Engineer Edwin H Colpitts in 1918. Figure shows the circuit of a colpitts oscillator. It consists of …
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The wien bridge oscillator is a type of RC oscillator, that produces the sinusoidal output. It is commonly used in audio and Sub-audio frequency ranges, that is 20- 20KHz. The maximum frequency of the output of a wien bridge oscillator is only about 1MHz. Circuit Diagram explanation of WIEN BRIDGE OSCILLATOR It has two stage RC …
RC phase shift oscillator are commonly used for generating audio frequencies, that is 1Hz to 10MHz. RC phase shift oscillator consist of an inverting amplifier followed by a feed back network with phase shift of 180 degree. The 180 degree phase shift at the feedback can be obtained by the combination of resistors and capacitors. …