ground-loop currents
81Hang gliding — Hang glider launching from Mount Tamalpais …
82Differential TTL — is a type of binary electrical signaling based on the TTL (transistor transistor logic) standard. Normal TTL signals are single ended, which means that each signal consists of a voltage on one wire, referenced to a system ground. The low voltage… …
83Asymptotic gain model — The asymptotic gain model [Middlebrook, RD: Design oriented analysis of feedback amplifiers ; Proc. of National Electronics Conference, Vol. XX, Oct. 1964, pp. 1 4] G {infin} T} . while in classical feedback theory, in terms of the open loop gain …
84Antenna measurement — techniques refers to the testing of antennas to ensure that the antenna meets specifications or simply to characterize it. Typical parameters of antennas are gain, radiation pattern, beamwidth, polarization, and impedance.The antenna pattern is… …
85river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …
86telephone — telephoner, n. /tel euh fohn /, n., v., telephoned, telephoning. n. 1. an apparatus, system, or process for transmission of sound or speech to a distant point, esp. by an electric device. v.t. 2. to speak to or summon (a person) by telephone. 3.… …
87Parasitic oscillation — is an undesirable oscillation caused by feedback. The problem occurs notably in RF [1], audio, and other electronic amplifiers[2] as well as in digital signal processing.[3] It is one of the fundamental issues addressed by control theory.[4] …
88Pi Josephson junction — A pi Josephson Junction is a specific instance of a Josephson Junction where the Josephson phase phi is equal to pi in the ground state, i.e. when no external currents or magnetic fields are applied to the Josephson junction. Background The… …
89Comparator — For other uses, see Comparator (disambiguation). In electronics, a comparator is a device that compares two voltages or currents and switches its output to indicate which is larger. They are commonly used in devices such as Analog to digital… …
90Perpetual motion — For other uses, see Perpetual motion (disambiguation). Robert Fludd s 1618 water screw perpetual motion machine from a 1660 wood engraving. This device is widely credited as the first recorded attempt to describe such a device in order to produce …
