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PLC Demo System User Guide UG-181
PLC Demo System User Guide UG-181

Ohm on the Range - IIT College of Science
Ohm on the Range - IIT College of Science

... measurements. Students should read the directions very carefully. Sometimes they are asked to make a prediction before taking measurements. If groups are running low on time, advise them to build the circuit, take measurements and avoid the calculations and analysis questions for the time being. Stu ...
Chapter 17 Transient Suppressors and Surge Suppressors
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... easily, contained in a sealed chamber for protection from atmospheric contamination. The trigger voltage can be adjusted by the spacing of the plates and the gas pressure. If air leaks into the tube, the trigger voltage can increase up to 20 times over the intended trigger voltage. Once they fire, t ...
LABORATORY MANUAL  P242 (Basic Electronics Lab) (2013‐2014)   
LABORATORY MANUAL  P242 (Basic Electronics Lab) (2013‐2014)   

... Because there are so many different types of diodes, some system of identification is needed to distinguish one diode from another. This is accomplished with the semiconductor identification system shown in Fig. 4. This system is not only used for diodes but transistors and many other special semico ...
Voltage Feedback vs. Current Feedback Op Amps
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UCC28730 Constant-Voltage, Constant-Current

... The cable compensation pin is connected to a resistor to ground to program the amount of output voltage compensation needed to offset cable resistance. The cable compensation circuit generates a 0 to 3.13-V voltage level on the CBC pin corresponding to 0 A to IOCC maximum output current. The resista ...
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... and then we go DOWN the resistor R1, with voltage change -I1*R1. It’s a drop - think hard about every minus sign here: +V − I1 R1 = 0 (Or V = I1 R1 , which if you think about it makes sense! Resistor R1 has a voltage V across it, after all) Alternatively, you could go around the loop labeled #4. (Th ...
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... The spectrum of light coming out of an LED is relatively narrow compared with, for example, a light bulb, but broad compared with a laser. You will be measuring the central value of the emission wavelength with a monochromator. The light intensity and the current are a function of the diffusion pote ...
Report on Production testing September 04
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... (ADC) features a fully differential input, a pipelined 10stage ADC architecture with digital error correction and wideband track and hold (T/H) incorporating a fully differential signal path. This ADC is optimized for lowpower, high dynamic performance applications in imaging and digital communicati ...
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... The TPS40077 drives external N-channel MOSFETs using second-generation, predictive-gate drive to minimize conduction in the body diode of the low-side FET and maximize efficiency. Pre-biased outputs are supported by not allowing the low-side FET to turn on until the voltage commanded by the closed-l ...
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... generator with a frequency range from 10 MHz to 6.2, 12.5 or 20.0 GHz and is ideally suited for a wide range of application, where good signal quality accurate and wide output power range is required. Excellent phase noise is combined with spurious and harmonic rejection. A high-stability OCXO refer ...
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... The power good pin can be connected to another active high load switch’s enable pin to implement sequential startup. PGOOD pin asserts low when the load switch is OFF. This feature allows driving a subsequent circuit. The diagram above illustrates power good function in sequential startup. As the VO ...
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... compared with the conventional two-level converter. Alternatively, the two back-to-back IGBTs can be connected in a common collector configuration as shown in Fig.1 (b), where T1, T3 and T5 can share the same gate driver power supply. T2 and T4 need two separate gate power supplies, which can be sha ...
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... The standard totem pole or push-pull output structure of a CMOS device is show in Fig_4. A large p-channel transistor connects between VDD and the output pin, while a large n-channel transistor connects between VSS and the output pin. When the internal logic drive signal goes toward VDD, the n-chann ...
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FSQ0365, FSQ0265, FSQ0165, FSQ321 Green Mode Fairchild Power Switch (FPS™)
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Monitoring Voltage, Current and Temperature

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A 1.2- mu m CMOS current-controlled oscillator - Solid

... device M 3 to supply the discharging current or to M 5 to supply the charging current, also nominally equal to Z,. Assume initially that switch S 2 is closed. The capacitor is charged until its voltage exceeds an upper threshold VTH. When this occurs the control circuit opens switch S2, closes switc ...
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W. Rieutort-Louis, L. Huang, Y. Hu, J. Sanz-Robinson, S. Wagner, J.C. Sturm, N. Verma, "A figure of merit for oscillator-based thin-film circuits on plastic for high-performance signaling, energy harvesting and driving of actuation circuits, Device Research Conference (DRC), 10.1109/DRC.2012.6256980 pp. 117-118 University Park, PA JUN (2012).
W. Rieutort-Louis, L. Huang, Y. Hu, J. Sanz-Robinson, S. Wagner, J.C. Sturm, N. Verma, "A figure of merit for oscillator-based thin-film circuits on plastic for high-performance signaling, energy harvesting and driving of actuation circuits, Device Research Conference (DRC), 10.1109/DRC.2012.6256980 pp. 117-118 University Park, PA JUN (2012).

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Schmitt trigger



In electronics a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier. It is an active circuit which converts an analog input signal to a digital output signal. The circuit is named a ""trigger"" because the output retains its value until the input changes sufficiently to trigger a change. In the non-inverting configuration, when the input is higher than a chosen threshold, the output is high. When the input is below a different (lower) chosen threshold the output is low, and when the input is between the two levels the output retains its value. This dual threshold action is called hysteresis and implies that the Schmitt trigger possesses memory and can act as a bistable multivibrator (latch or flip-flop). There is a close relation between the two kinds of circuits: a Schmitt trigger can be converted into a latch and a latch can be converted into a Schmitt trigger.Schmitt trigger devices are typically used in signal conditioning applications to remove noise from signals used in digital circuits, particularly mechanical contact bounce. They are also used in closed loop negative feedback configurations to implement relaxation oscillators, used in function generators and switching power supplies.
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