current loop


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current loop

[′kər·ənt ‚lüp]
(electricity)

Current loop

In electrical wiring, a situation in which separation of hot and neutral leads results in higher than normal electromagnetic fields.

current loop

A serial transmission method that uses a closed loop. It originated with teletype machines that transmitted 20 mA (milliamperes) of current for a 1 bit and the absence of current for a 0 bit. A 60 mA loop is also used for digital signals. A common analog current loop is 4-20 mA (4 to 20 mA), which is widely used for process automation. Current loops provide a better signal-to-noise ratio (SNR) than voltage-based systems. Contrast with RS-232. See 4-20 mA.
References in periodicals archive ?
Current loop controller for the CHB-DSTATCOM, Proportional-Integral (PI) regulator is represented by transfer function C(Z),
Impact of this limitation is that the rotor speed increases almost linearly to the desired value--it is because the response of current loop is significantly quicker than of the outer speed loop.
The return current loop is often unclear from design's schematic drawing (10), which mainly illustrates electrical connections of circuit components or signal flow.
The DSPs used today allow blazingly fast servo feedback data, so the Servo HRV4 closes the current loop in 31.
Digi-Stem's are available as self-powered thermometer units with up to 18 months battery life or as transmitter models offered with a 2-wire, 4-20 milliamp current loop.
Typically, in servosystems, a specific drive/servomotor combination is recommended for optimum performance characteristics such as drive velocity and current loop bandwidth and feedback.
The key physical characteristic to determining the equivalent series inductance (ESL) of a capacitor is the size of the current loop it creates.
The device also includes a 14-bit digital-to-analog converter (DAC) to provide highly linear analog outputs, and a variety of output interfaces including analog voltage, 4-20 mA current loop, SPI, I2C, UART, and one-wire interface (OWI) to give designers options for different application needs.
This is essential to maintaining a tight current loop for the signal, to keep energy from radiating.
which owns and operates more than 120 convenience stores with 12 current Loop Neighborhood convenience stores in California, committed to making healthier options easier at all of its current and future Loop Neighborhood stores.
These sensors give an analog output of either a high-level DC voltage or a 4-20 mA current loop, either of which can easily connect to any data acquisition system for continuous monitoring and/or data transmission over a remotely accessible wireless network.