Logic probe

Logic probe functions. Signal high/low and pulse detection circuitry built into a DMM probe permits the instrument to function as both a conventional multimeter and a logic probe. This eliminates the necessity to change instruments in the middle of a troubleshooting sequence. 

The logic pulser is the active counterpart to the logic probe. The logic pulser generates a single pulse, or train of pulses into a circuit to check the response. 

Eddy currents The examination of non-ferrous tubing using external coils is a well-tried and successful inspection technique, owing mainly to the pioneering work of Forster in Germany. The adoption of this method for in-situ inspection of condenser tubes, by mounting eddy-current coils in probes (or bobbins) that can be inserted in condenser tubes, was a logical development of the technique. Suitable apparatus was developed in the immediate post-war period more or less independently by several oil and chemical companies. The principle of operation has been described in the literature... 

LSI logic LSI memory Other testers Probing and handling equipment... 

Xu H, Xu X, Dabestani R et al (2002) Supramolecular fluorescent probes for the detection of mixed alkali metal ions that mimic the function of integrated logic gates. J Chem Soc Perkin Trans 2 636... 

These blotting techniques are known by the names of compass directions (Southern, Northern, Western). Since Southern is a person s name, there s no logic in how the different blots were named. Southern developed a blot in which DNA on the blot is detected by a labeled DNA probe. It was then fairly logical that the next technique developed, detecting RNA on the blot with a DNA probe, should be called a Northern blot. Then things got carried away with the Western, and now the Southwestern, and so on and so on. 

Automatic interface detection probes attached near the intakes of both pumps provide an operating logic. The upper probe is adjusted to detect both air-product... 

The data in Tables 4 to 13 at 25°C plot nearly as vertical lines independent of the wt % NH3 in solution except for pure ammonia. At low concentrations the curves tend to deviate because of the ionization of NH3 and water. If the amount of ammonia in solution is approximately known, these curves can be used to estimate the moles of acid gas per mole of NH3 with fairly good accuracy. At 80°C the curves tend to slant more so the amount of ammonia in solution would have to be known more accurately before an estimate of the ratio of acid gas to ammonia could be made. Also we do not recommend the use of a pH probe at 80°C as a control indicator because the response of the probe is more erratic, and precise data are difficult to obtain. The use of an indicator probe at 25°C seems more logical because the output is more stable. 

Notice that two values are displayed in the Simulation Status window. The bottom line changes quickly and is the main sweep variable, Vs. The line second to the bottom is the nested sweep variable, BV. Notice that for each value of BV, Vs is swept from -15 to +15. Logically, the primary sweep loop executes inside the secondary sweep loop. That is, BV is set to 1 and Vs is swept from -15 to +15. Then BV is set to 2, and Vs is swept from —15 to +15. Then BV is set to 3, and Vs is swept from -15 to +15, and so on. When the analysis is finished, Probe will run. Add the trace V(VL) (press the INSERT key) ... 

In the fluid-bed granulation process, moisture control is the key parameter that needs to be controlled. Faure et al. (133) have used process control for scale-up of a fluidized bed process. They used infra-red probes to monitor moisture. As there are normally large numbers of inter-related variables, they used computerized techniques for process control, such as fuzzy logic, neural networks, and models based on experimental techniques. 

A gold probe is an electron-dense sphere of gold coated with an immuno-logically active protein. Making such a probe involves two major steps production of the gold sol and binding of the gold to the probe molecule. 

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