A technology related circuits with electrical devices such as vacuum tubes, transistors, active component, and Integrated Circuit diode part and passives (English: passive component), such as conductivity, Electrical resistors, capacitors and coils. Nonlinear behavior of the active component and the ability to control the flow of electrons, and make it possible to amplify the gentle strength up to Visual and sound communication, such as telegraph, telephone, radio, tv, etc.
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