Sensing current

First select a voltage divider sense current—a nominal 1mA. Determine the lower resistor (RIO + Rll) in the voltage divider ... 

Select the proportion of sense current to be drawn from each output -i-5, 60 percent -i-12, 20 percent +24, 20 percent. 

Starting on the secondary side of the power supply, assign the sense current through the voltage sensing resistor divider to be approximately 1 mA (or 1K per volt). Using the closest resistor value for the lower resistor a 2.7K resistor yields and actual sense current of 0.926 mA. One can immediately calculate the value of the upper resistor (R3) ... 

The voltage-sense voltage divider is started by selecting a sense current through the divider. I will use 1 mA. The lower resistor (R3) becomes... 

Direct consumption sugar, 23 450-451 Direct contact heat exchangers, 13 268 Direct cooler evaporators, 21 537 Direct-coupled plasma (DCF), 25 370 Direct covalent carbon nanotube functionalization, 17 54-55 Direct current (dc) diode sputtering, 24 730-731. See also dc sensing current... 

Here, AR/R is the maximum MR signal of the spin valve sensor (reaching today 15 to 20% in specular spin valves), Rsq is the sensor square resistance (15 to 20 Q/sq), W the track width of the read element (distance between leads), h is the sensor height, / the sense current, f is the angle between the... 

A schematic of the apparatus is shown in Figure 2. The series resistor senses current. When the overall circuit RC (R and C are circuit resistance and capacitance, respectively) time constant is short compared with the voltage developed on the sensing resistor is proportional to the instantaneous... 

Acoustics is not only a particle sizing teehnique, but also provides information about the microstmcture of the dis-peresed system. The acoustic spectrometer can be considered as a microrheometer. In acoustics, stresses are applied in the same way as with regular rheometers, but over very short distances on the micrometer scale. In this way, the microstmcture of the dispersed system can be sensed. Currently, this feature of acoustics is only beginning to be exploited, but it is certainly very promising. 

Kalymnios, D. Plastic Optical Fibres (POF) in sensing - current status and prospects. 17th Int. Conf. on Optical Fibre Sensors (OFS-17), Bruges, Belgium, SPIE-Vol. 5855 (2005), pp. 1-4... 

The self-powered solid-state overload is self-protecting in short-circuit conditions. Current sensors automatically saturate, and sensed current is well below the safe maximum limit of the electronics. This same protection isolates the electronics of the solid-state overload from damage due to spikes or transients in line current. 

Bassler, B.L. 1999. How bacteria talk to each olhen regulation of gene expression by quorum sensing. Current Opinion in Microbiology 2(6) 582—587. 

Although the details of the vascular architecture for particular organs have been well characterized in individual cases, variability among individuals makes the use of such published data valid only in a statistical sense. Current imaging technology can be used to map and numerically model thermally significant blood vessels larger than 600 /um diameter [6], but smaller vessels must be analyzed by other approaches as illustrated below. 

Figure 8 Nitrogen oxide eiectrochemicai sensor response and sensitivity (a) the relationship of sensing current and the concentration of NO2 and (b) the effect of gas flow rate on the sensitivity of the sensor for various potentials of PANI/Au/Nafion working electrode. Reproduced with permission from Do, J. S. Chang, W. B. Sens. Actuators, B2001, 72(2), 101-107. ...

Liewhiran, C. and Phanichphant, S., 2008. Doctor-bladed thick films of flame-made Pd/ZnO nanoparticles for ethanol sensing. Current Applied Physics, 8(3/4), pp. 336-339. 

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