current source


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current source

[′kər·ənt ‚sȯrs]
(electronics)
An electronic circuit that generates a constant direct current into or out of a high-impedance output node.
References in periodicals archive ?
Beside the current source, it is the cabling, multiplexer, and the DUT adapter which will all generate--although they are stressed--ohmic and thermal losses when performing high-current tests.
A slot antenna usually can be the equivalent magnetic current source and is a kind of microwave radiator coupling with a dipole antenna.
In turn, this enables a current source with two outputs: the first output injects a current into resistor R1, thus pushing up the voltage level at the node [TSD.sub.OUT].
In this, the design configuration is right series and left shunt with the current source converter (CSC) [3,4].
According to our previous paper [5], we obvious that for achieving high output impedance in high frequencies from the modified Howland current source, which is shown in Fig.2, and by using output impedance equation expressed by (1), the limited gain and gain-bandwidth of op-amp which is used in its structure must be high.
In the forward problem, the current source is typically approximated by a current dipole [J.sup.i](p) = [Q.sup.[delta]](p - [p.sub.0]) [9-11] located at position [p.sub.0] with moment Q.
The current source code release pertains to the GT-N7100 model that provides developers a peek into the 5.5 inch device's inner workings, enabling them to get to work on new mods, (http://www.engadget.com/2012/10/08/samsung-releases-galaxy-note-ii-source-code/) Engadget has reported.
These were typically calibrated with an external current source to calculate a calibration factor similar to a shunt factor (Figure 2).
"River Haro, the current source of water for the dam, is drying up rapidly because of hot summer season," the sources said, adding, the water level, in the dam, had gone down to 1927 feet, just ten feet above the dead level of 1910 feet.
The high-side current source works with up to 2x500 mA with two LEDs in serial configuration and up to 720 mA with one LED.

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