Output current

Figure Bl.15.5. Effect of small-amplitude 100 kHz field modulation on the detector output current. The static magnetic field is modulated between the limits and The corresponding detector current varies between the limits 1 and/. The upper diagram shows the recorded 100 kHz signal as a fiinction of B. After [3].

Polarization probes rely on the relationship of the applied potential to the output current per unit area (current density). The slope of applied potential versus current density extrapolated through the origin, yields the polarization resistance Rp, which can be related to the corrosion rate. 

Designing the output filter choke La) in a forward-mode converter is done first. This simple procedure can be seen in Section 3.5.5. A key design factor is to design the inductor to operate in the continuous current mode. The typical value of peak inductor current is 150 percent of the rated output current. The typical valley (minimum) current is about 50 percent of the rated output current. 

Maximum output current Output ripple voltage Output regulation ... 

The major concern of both output and input filter capacitors is the ripple current entering the capacitor. In this application, the ripple current is identical to the inductor ac current. The maximum limits of the inductor current is 2.8 A for I peak and about one-half the maximum output current or 1.0 A. So the ripple current is 1.8 A p-p or an estimated RMS value of 0.6 A (about one-third of the p-p value). 

The peak eurrent within the primary eireuit is 3.1 A, whieh will oeeur at low-line and at a 200 to 400 kHz operating frequency. Then the output current from the secondary of the current transformer is... 

The power winding of the inductor (transformer) not only must support the maximum average input current but the output current as well. So, the wire gauge of the winding should be... 

Invartars 1- Catastrophic a. No Output b. Fails to Transfer 2- Degraded a. Output frequency outside specification b. Output Voltage outside spec. c. Output current outside spec. 3- Incipient a. Overheating b. Faulty indication c. Oirt/dust Contamination... 

Light. Light level, or illuminance, is usually measured with a photocell made from a semiconductor such as silicon. Such photocells produce an output current proportional to the illumination on the sensor incident luminous density. 

Use a spreadsheet for a three single-axis accelerometer system mounted in a steering tool or a MWD tool and compute the output current values for each accelerometer in the following cases ... 

Potentiostatic polarisation —potentiostats with varying output currents. 

The phosphor-photoelectric detector is generally used with polychromatic beams the intensity of which is high enough to make the detector instantaneous. External amplification easily increases its otTtput currents to values that can be read on a micro- or milliammeter. Output currents thus amplified could be used through servo links to control operations such as blending. 

Output currents in microamperes effective wavelengths in angstroms. 

The second column of Table 3-1 contains f0 values corresponding to the five voltage settings. These zq values were calculated from the output currents for hydrogen (third column) because a measurement of i0 on the evacuated cell could not be risked with the plastic windows. In this calculation, which was done by Equation 3-14, /uh = 1-00 was used, this arbitrary procedure being permissible because hydrogen is almost transparent. 

Table 3-1 shows that setting 1, which gives the softest radiation, is the best for analytical work, since it yields the greatest ratio (6000/1) between the output current for hydrogen and that for chlorine. 

To arrive at some idea of the precision attainable in direct absorptiometry with gases, methyl chloride contained in a metal cell with beryllium windows was systematically expanded by connecting the cell to a vacuum chamber, output currents being read after each expansion. The results were satisfactory.14... 

Output current scale factor. Output current reading X 10 2 = output current in milliamperes. 

The great advantage of the comparative method is that the interpretation of the results, being based upon Equation 3-16, does not directly involve the output currents. 

With dote(Tors that count x-ray quanta, the time to a given number of counts is often used in the calculation of result s in stead of ihe number of counts iV, which is analogous to an output current,/.)... 

Fig. 5—6. Geiger-counter output currents recorded by Dow automatic x-ray absorption spectrometer. Superposed records on left are x-ray absorptiometric curves for iso-octane and a solution containing ethylene dibromide, whereas traces at right illustrate recording of transmitted intensities at fixed wavelengths. Apparent change in x-ray absorption of solvent in going through bromine absorption edge is result of marked slope of white radiation distribution curve at 0.9 A. 16 (Liebhafsky, Anal. Chem., 21, 17. Courtesy of Dow Chemical Company.)...

For the case labeled DC-DC Low-Power, we insert digital multimeters (DMMs) to measure the input and output current. We also connect DMMs directly across the input and output terminals of the converter board to measure input and output voltages. 

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