Current-voltage characteristic load line

During the entire long-time test (both operation and storage stages) the current voltage characteristics (I-V curves) were measured every 30 seconds. Then each I-V curve is represented in Fowler-Nordheim coordinates, where it could be interpolate by straight line ln(I/F2) = A + B/V. During the cathode operation, its parameters vary due to some physical phenomena such as ion bombardment and electrostatic force loads. We record those variations as dependence of parameters A and B in time. 

If the voltage between the electrodes exceeds the critical threshold value Ft necessaiy for breakdown, a self-sustained discharge can be ignited. The general current-voltage characteristic of such a discharge is illustrated in Fig. 4-22 for a wide range of currents I. The electric circuit also includes an external ohmic resistance R, which results in the Ohm s law usually referred to as the load line ... 

An example of measured a-Si H TFT driver characteristics and calculated load lines with (Far + Fpled) and without voltage drop across the active resistor is shown in Figure 9.9a [26], The crossing point between IV) l ns and load lines represents output current (/out) of the pixel... 

FIGURE 9.9 (a) The load lines of 3-a-Si H TFT pixel circuit for FDD = 20 V. The open symbol and solid line represent the load line with (FAr + FPLED) and without (FPLED) active resistor. (From Kim, J.-H. and Kanicki, J., SID Tech. Dig., 34, 18, 2003. With permission.) (b) Measured (symbol lines) and simulated (solid lines) pixel electrode output current versus input data voltage characteristics (Fiaia E gs I Foi.ko)- (From Kim, J.-H. and Kanicki, J., SID Tech. Dig., 34, 18, 2003. With permission.)... 

Load line A straight line drawn across a grouping of plate current/plate voltage characteristic curves showing the relationship between grid voltage and plate current for a particular plate load resistance of an electron tube. 

Microwave in Mkrofluidks, Fig. 4 When a transmission line is terminated by a load, the ratio of total voltage to the total current (summation of incident and reflected voltage and current) must be equal to the impedance of the load. In order to have a reflection equal to zero, the impedance of the load must be equal to the characteristic impedance of the transmissirai line. No reflection means that all the power sent to the load is consumed by the load... 

Power factor The cosine of the phase angle between line voltage and current in ac circnits. The phase angle is determined by the electrical characteristics of the load. See Chap. 3.2 for a detailed discussion of power factor. 

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