active element

active element

[′ak·tiv ′el·ə·mənt]
(electronics)
Any generator of voltage or current in an impedance network. Also known as active component.
(nuclear physics)
A chemical element which has one or more radioactive isotopes.
References in periodicals archive ?
Thus, the idea of the change of type of the frequency response of two-port (filter) without the necessity to modify the internal topology or a position of the input or the output port(s) by setting of the electronically controllable active elements (many novel controllable active elements are summarized in [7]) is an advantageous approach to the filter design.
where [chi] = exp{- 0.25[DELTA]t[D.sub.ep][alpha][T.sub.p][c.sub.p]([T.sub.p])[[gamma].sup.- 1.sub.p]} [D.sub.ep], [D.sub.ip] are the outer and inner diameters of the p-th active element, respectively; [a.sub.Tp] is the heat transfer coefficient of the p-th active element; [c.sub.p] is the heat capacity of the p-th active element.
However, not all proposed circuits with current-input current-output are purely current-mode ones because of the hybrid character of the used active elements (OTA being a typical case).
The single active element all-pass filter presented in this paper exhibits the following features:
Then an effective procedure is introduced to automatically acquire the data of active element patterns of individual elements in different azimuth planes.
With regard to the active element, there is the need to venture out and find those who have never heard the gospel before.
He said: ``It is unacceptable to discharge considerable amounts of the long-life radio active element Technisium-99 into the sea.''
BlueJ delivers active element programming; enabling programmers to view element interactions while the program is being built.
This additional loss is due to mismatch between the array feed and the elements due to mutual coupling or other effects that cannot be practically compensated over all scan angles.[2] The ideal element pattern is replaced by an active element pattern to include this scan loss in the calculation of array gain of[3]
The writings of Yaziji and of other Christian Arabs helped to revive classical literature as an active element in contemporary Arabic culture.
The first active element is Balanced-Output Transconductance Amplifier (BOTA) with current outputs.
[[lambda].sub.a](T) is the heat transfer coefficient of the insulating gasket; da is the gasket thickness; [D.sub.en], [D.sub.in] is the outer and inner diameters of the active elements, respectively; [[alpha].sub.Tn] is the heat exchange coefficient of the n-th active element; [c.sub.n] is the specific heat of the n-th active element.