internal input impedance
91List of vacuum tubes — This is a list of vacuum tubes or thermionic valves. Before the advent of semiconductor devices, hundreds of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications. Contents… …
92555 timer IC — NE555 from Signetics in dual in line package …
93Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is an inherent limitation in conventional optical devices or lenses.[1] In 2000, a type of lens was proposed,… …
94Matrix (mathematics) — Specific elements of a matrix are often denoted by a variable with two subscripts. For instance, a2,1 represents the element at the second row and first column of a matrix A. In mathematics, a matrix (plural matrices, or less commonly matrixes)… …
95Open drain — is one of the many different electrical input/output standards in digital designs today. Definition The word drain in the term Open drain refers to the drain terminal of a MOSFET transistor. (The analogous term for BJT devices is open collector.) …
96Loop antenna — A shortwave loop antenna A loop antenna is a radio antenna consisting of a loop (or loops) of wire, tubing, or other electrical conductor with its ends connected to a balanced transmission line. Within this physical description there are two very …
97MIDI — For other uses, see MIDI (disambiguation). Note names along with their accompanying MIDI note numbers MIDI (   …
98Simulation — Simulator redirects here. For other uses, see Simulator (disambiguation). For other uses, see Simulation (disambiguation). Not to be confused with Stimulation. Wooden mechanical horse simulator during WWI. Simulation is the imitation of some real …
99Sense (electronics) — In electronics, sense is a technique used in power supplies to produce the correct voltage for a load. Although simple batteries naturally maintain a steady voltage (except in cases of large internal impedance), a power supply must use a feedback …
100Isolation amplifier — Articleissues confusing=December 2007 unreferenced=December 2007 orphan=December 2007Isolation amplifiers provide electrical isolation and an electrical safety barrier. They protect data acquisition components from common mode voltages, which are …
