From the course: Electronics Foundations: Basic Circuits

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Filter frequency response

Filter frequency response

From the course: Electronics Foundations: Basic Circuits

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Filter frequency response

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- [Instructor] Electronic filters are circuits, which are designed to remove specific frequency components from the signal passing through them. And they show up in all sorts of electronic devices. For example, the equalizer in a stereo system, uses filters to separate the low frequency base parts of an audio signal from the higher frequency trouble components to send them to different speakers. Your cell phone relies on filters to process the incoming signals from its antenna, to select certain frequencies for communication, and pretty much every DC power supply ever created uses some sort of filter, to provide a nice clean output power signal. Filter circuits can either be active or passive. Active filters, have the ability to increase or amplify the power of certain frequencies within a signal. However, active filters require an external power source to do that and they usually use semiconductor components like,…

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