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What is the effect of temperature on barrier voltage in a pn junction diode?
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∙ 10y ago
ginago
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∙ 10y ago
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What are the three factors that effect the electrical parameters of a op-amp?
Supply voltage , temperature , frequency are factors that effect the electrical parameters of opamp
What is the effect of temperature on ohms law?
AnswerOne of the conditions for Ohm's Law to apply is that the temperature of a conductor MUST remain constant. And, unfortunately, this is difficult to achieve because as the applied voltage increases, the resulting current causes the temperature of the conductor to rise -thus negating Ohm's Law!!For Ohm's Law to apply, the ratio of voltage to current must remain constant for variations in voltage. If it doesn't, then the conductor/device is NOT obeying Ohm's Law. Period! So if, for example, you increase the voltage across a lamp, you will find that the ratio varies as the voltage increases, and this is because the resistance is increasing due to an increase in temperature. So, in this example, the temperature is the reason why lamps don't obey Ohm's Law.
What effect does low impedance have on voltage regulation?
raised voltage output
What is mean BFW11?
Its a Transistor used in JFET (Junction Field Effect Transistor)
How does voltage effect kWh?
voltage is pressure and kWh is energy... therefore pressure is energy...
Effect of temperature on pn-junction diodes?
barrier voltage decreases by 2mV for every 1 degree increase in temperature.
How can thermocouple measure the temperature?
Thermocouples are two junctions of two dissimilar metal conductors. One junction is the sensing junction and the other is the reference junction. The voltage between the two junctions depends on the temperature difference between the junctions (Seebeck effect). The voltage can be measured and the temperature difference determined based on known readings of the voltage produced by the metals. If the temperature of the reference junction is known, then the temperature of the sensing junction can be calculated.
What is the effect of temperature on PN junction diodes?
As temperature rises more minority carriers are created, causing leakage across the junction to rise. This can cause runaway and eventual destruction of the junction.
What is bjt and jfet?
BJT is Bipolar junction transistor FET is Field effect Transistor It is a current controlled device It is voltage controlled device
What would cause the barrier potential to decrease from 0.7 V to 0.6 V?
The barrier potential may depend on the exact material; but you can't normally change that. It may also depend on temperature.Also, such a barrier potential is not fixed at some value (like 0.7 V); however, it's often close enough that you can consider it to be constant. But actually, the barrier potential depends on the current. At higher currents, the potential is slightly higher.
What types of transistors are the following - BJT PCT UJT SBT FET GJT AJT DFT?
The BJT is the bipolar junction transistor, the PCT is the point contact transistor, the UJT is the uni-junction transistor, the SBT is the surface barrier transistor, the FET is the field effect transistor, the GJT is the grown-junction transistor, the AJT is the alloy-junction transistor, and the DFT is the drift field-junction transistor.
What are the three factors that effect the electrical parameters of a op-amp?
Supply voltage , temperature , frequency are factors that effect the electrical parameters of opamp
Effect of temperature on diode?
Most diode voltage stays negative and linear with temperature effects. To combat the temperature, current must remain steady within the diode, and it should not heat with that applied current.
What is the effect of surge arrester on increase the voltage in medium voltage circuits?
What is the effect of surge arrested on increase the voltage in medium voltage circuits?
How thermocouple thermometer works?
Couple means a pair. So two dissimilar metals, for example copper and iron, can be taken. Say two copper rods and one iron rod. Now let us weld them keeping iron in-between the two copper rods.Two junctions will be formed. If both the junctions are at the same temperature, nothing remarkable happens. If one junction is at a higher temperature than the other, then an emf is produced. This emf can be measured as the voltage difference between the two copper rods. It will be very small, in the millivolt or microvolt range.If such thermocouples are arranged in series then the emf will be added and so considerable emf could be produced.This happens due to the Seebeck effect, where an electrical potential is formed between two ends of a conductor if the ends are at different temperatures. It is commonly misstated that a potential is formed at the junction between the two metals, but basic physics is that there can be no potential between two conductors in contact.The thermocouple does not actually measure temperature, but the temperature difference between two points. If the temperature at one point is known (reference junction) then the temperature of the other point (sensing junction) can be calculated.A thermocouple measures temperature difference (not temperature). A thermocouple is a pair of dissimilar metals wires twisted together that form two metal-to-metal junctions. When the junctions are at different temperatures a small but measurable voltage difference is produced that indicates the difference in temperature between the junctions. The voltage depends on the type of the two metals, but common types are known and the equations or tables are available.So if you know the temperature of one junction (the reference junction) and the voltage difference, you can calculate the temperature at the other (sensing) junction.
What happens if power is supplied to thermocouple?
Thermocouples convert a delta-temperature to electricity and electricity to a delta-temperature. Passing current through the junction will make one side hot and one side cold. Conversely, applying a delta-T across the junction will make a current flow. Thermo-electric. This is called the Peltier-Seebeck effect.
What effect temperature?
effect of temperature
