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Voltage, Current, and Resistance
Voltage, Current, and Resistance

... extension cord has more resistance than a 10 metre extension cord. ...
Experiment #8 Report
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... Using the curve tracer, the student is expected to find the corresponding beta and current values that match up to the bipolar junction transistor that is used in the lab. In this case, the students are instructed to use a 2N2222A transistor and must trace their own part. Using another student’s val ...
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... signal processing and high efficient LEDs enable small and powerful reflective photoplethysmography sensors (like the SFH 7050, see Fig. 1). This is especially important as reflected PPG signals can be measured on body areas where transmissive PPG can’t be applied allowing wearable PPG sensors. By a ...
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CIRCUIT FUNCTION AND BENEFITS CIRCUIT DESCRIPTION
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... in place of the AD8319. For a constant output power function, the lower dynamic range of the AD8319 will be adequate since the loop will always servo the detector’s input power to a constant level. ...
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... the unit. That way, the operator does not have to touch a high-voltage switch. High-voltage capacitors like C1 are notorious killers. If for some reason they become disconnected after charging, they can hold a lethal charge for years! To guard against this possibility, we connect two bleeder resisto ...
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369faq_b1 - GE Grid Solutions

... It is highly possible that the secondary wiring to the relay is not correct. High unbalance (and wrong power) can be read when any of the A, B, or C phases are swapped, or the relay is programmed as ABC sequence when the power system is actually ACB and vice versa. The easiest way to verify is to ch ...
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... In the case of cam/crank sensors, the Hall Effect Sensor must be properly aligned with the interrupter ring or shutter blade to generate a clean signal. A worn or stretched timing chain as well as “cam walk” can affect the sensor’s output. Any contact between the moving parts and sensor can cause id ...
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... because of the dependent current source. The trick here is to apply a signal source vx and then determine ix. The output resistance is computed from the ratio of these quantities as ...
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... A transducer is an electronic device that converts energy from one form to another. Common examples include microphones, loudspeakers, thermometers, position and pressure sensors, and antenna. No transducer is 100-percent efficient; some power is always lost in the conversion process. Usually this l ...
Fully-Differential Offset-Cancelling Circuit with Configurable Output
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... gain must be large enough to ensure that the residual offset is negligible and does not affect the overall circuit operation. In certain applications such as data converters, the offset cancellation is sometimes done offline [6]. These techniques, however, preclude the circuit from being used during ...
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... Fire control panels that are certificated by Apollo are also compatible with Apollo isolating circuits but it is essential that compatibility of the fire control panel and isolating device be fully established when designing a fire detection system. Apollo offers a software program with which the vi ...
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Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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