If the value of β is high, then the resistor–temperature relationship will be very good. A higher value of β means a higher variation in resistance for the same rise in temperature – hence you have increased the sensitivity (and hence accuracy) of the thermistor. From the equation, w...
What is resistance? Measuring resistance Resistance is useless? How resistors work How does the size of a resistor affect its resistance? Resistance and temperature Resistor color codes Find out moreWhat is resistance?Electricity flows through a material carried by electrons, tiny charged particles insi...
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RTDs are categorized by their nominal resistance at 0°C. A Pt100 sensor has a temperature coefficient of approximately 0.385 Ω/°C and a Pt1000 has a temperature coefficient that is a factor of 10 greater than the Pt100. Many system designers use these coefficients to get an...
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Measuring the rise and fall time data requires the use of the oscilloscope on the buffer driving the required load. In this case, a 50 Ω resistor is used to represent the transmission line impedance. For the open-drain type, connect the load ...
A 600 V device is normally used to obtain enough margin against mains surges. A negative temperature coefficient (NTC) resistor limiting the current at turn-on is required to prevent any overstress on the diode bridge. The power dis...
Inrush currents can be controlled with a series impedance, such as a resistor or ferrite, between the relay and the capacitance. Any capacitance in the system can contribute to inrush currents, whether it is in a reactive device under test or from a shielded cable. The ferromagnetic materials...
In looking at how a vacuum tube works it is also necessary to consider the effectiveness of the way in which electrons escape from the surface.The number of electrons emitted from the heated material per unit area is related to the absolute temperature as well as a constant 'b' ...
As long as there is water in the pan, the temperature should be stable. Once the rice absorbs all the water in the pan, the temperature will start to rise. The rice cooker senses this change and will either switch off or switch to a warming cycle. At this point, the rice has ...