Hartley oscillator is a type of LC oscillator which is widely used as a local oscillator in radio receivers. Hartley oscillator was invented in 1915 by the American engineer Ralph Hartley. Figure shows the circuit diagram of a Hartley oscillator. It consists of single stage inverting amplifier and L-C phase shift network. The phase shift …
Under the simplest conditions, a medium can carry only one signal at any moment in time. For multiple signals to share one medium, the medium must somehow be divided, giving each signal a portion of the total bandwidth. The current techniques that can accomplish this include frequency division multiplexing (FDM) time division multiplexing (TDM) Synchronous …
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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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