Questions tagged [device-characteristics]
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53 questions
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Maximum current drawn by Schmitt-Trigger
I'm looking at the SN74LVC1G1 Schmitt-Trigger Buffer.
I want to understand what is the maximum current the chip can draw from the power supply source.
Under "6.5 Electrical Characteristics - DC ...
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Are device V-I charcteristics, applicable only during steady state? [closed]
I guess device characteristics are valid only during steady state. (For eg: I dont see any reverse recovery in diode V-i charcteristics).
Following chatgpt answer throws some doubt -It says "...
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Why does it seem like the ideal photodiode model leads to a violation of conservation of energy?
Short version of my question:
Roughly speaking, the output power from a properly biased ideal photodiode feeding a resistor is quadratic with the optical input power, with seemingly no limit. So at ...
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BJT B-E Zenering: whither the collector?
So, I'm trying to analyze how the circuit in this question behaves when subject to reverse battery (vs. being driven from OUT to IN), and I'm running into a severe snag in the process, though. It ...
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Why does input threshold occur at the unique voltage at which both inverter MOSFETs are in saturation?
A relevant figure of merit for a CMOS inverter is the so-called input threshold voltage (no relationship to the threshold voltage of a given MOSFET) \$V_{inv}\$, defined as the voltage \$V_{in}\$ at ...
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Why do we usually operate well into strong inversion?
In textbooks like the venerable Gray and Hurst or in contexts like my introductory analog design class, it was always emphasized that with MOSFETs we always want our designs to obey some constraint ...
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IV curve arithmetic - reference request
When playing around with electrical concepts in my head, I realized that the IV characteristic of any combination of elements, in series or in parallel, can be computed by simply adding the IV curves ...
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Why do series NMOS do better than a single NMOS from a delay perspective?
My VLSI text (Weste and Harris) writes the following:
Transistors in series drop part of the voltage across each transistor and thus experience smaller fields and less velocity saturation than single ...
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What characteristics should I be looking in to choose a MOSFET?
I have an application which I need to switch a 1000 W 24 V 40 A inverter on, and I do need a way to switch it on with a MOSFET (I don't understand the way how to choose it properly) although in the ...
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Standard Thick Film Chip Resistor datasheets not mentioning storage temperature
I am looking for alternatives for a 120ohm 5% 1206 standard thick film chip resistor. I have noticed some MFRs (KOA speer, Vishay, Bourns) do not always detail the storage temperature in their ...
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What is the difference between I-V characteristics of rectifier diodes and Schottky diodes?
I searched for the difference between rectifier diodes and Schottky diodes on the internet but cannot find it.
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How to interpret this Zener diode IV characteristic diagram?
I'm looking at the datasheet for the BZX55 Zener diode. The given Zener IV characteristic are in page 5, Figure 8 and 9, (one copied below):
I'm confused on what this is saying. I understand that ...
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Why is the MOSFET not behaving as per standard device characteristic curve?
A MOSFET has 3 modes of operation:
1.Vgs < Vth => Cutoff
2. Vgs > Vth and Vds < Vgs − Vth => linear region
The MOSFET operates like a resistor, controlled by the gate voltage relative ...
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Is there anywhere I can download BJT Transistor I-V data?
Is there anywhere I can download some current-voltage data for a bipolar junction transistor? (It doesn't matter that much which one.)
To explain further, for a simple BJT circuit we have the ...
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Transfer characteristics of a Toshiba DMOS FET
I am looking at the TBD62003A load driver, but it is very light on details about transfer characteristics.
Are there characteristics curves available from a similar device? Specifically, I want to ...
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What prevents MOSFET drain-to-gate leakage current?
What in the structure of a MOSFET prevents leakage current flowing from the drain to the gate of a MOSFET when the drain is at a higher potential than the gate? I am assuming that drain-to-gate ...
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Operating above maximum characteristic supply voltage, but below absolute maximum voltage
I'm using an Alliance parallel SRAM IC, and under the Electrical Characteristics table, it says VCC can be min 3.0 V, max 5.5 V. In the Absolute Maximum Characteristics table, it says terminal voltage ...
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Diode I-V characteristics
I am studying device design, starting from diodes. I am using the VisualTCAD simulator which allows us to simulate device fabrication and simulation.
The diode specifications are as follows:
n-doping:...
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How does PC install drivers and device info? [closed]
Can someone please explain how a PC knows all the info of a device as soon as you plug it in? How can I add this functionality to a bluetooth or USB device?
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Gm much lesser than it should be
Assuming square law model, transconductance of an npn transistor in saturation mode can be found as gm = Kn'* (W/L) * (Vgs-Vth) which can also be written as gm=2*Id/(Vgs-Vth).
Now, while simulating a ...
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JFET-Transistor output characteristics in PSpice
I would like to ask if anyone can help me with the following problem. I would like to print the output characteristics of the JFET-transistor in PSpice. This is PMBFJ309, here is the datasheet. My ...
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Heating cartridge characteristic curve?
I was wondering if there are heating cartrdiges out there which have a characteristic curve how the heating temperature depends on the heating power. E.g. a x/y plot with the heating power in Watts as ...
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Determine voltage with which to run COB LEDs
I have a few COB LEDs laying around, but unfortunately I don't know the exact model anymore.
Hence I can't read their data-sheet.
However, I would still like to use them. I own a good multimeter, and ...
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Adding Holes to a custom EAGLE library
Currently, I am creating a custom EAGLE library for a relay that I couldn't find the CAD for.
In the packag stage:
I added the pads as seen in the picture and I'm having second thoughts about adding ...
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V-I characteristics of a non linear, bilateral element
My professor had told us that Bilateral elements have V-I characteristics which are symmetric about the origin.
In an exam, we were asked to draw the V-I characteristics of a non linear, bilateral ...
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Multiple "typical characteristic" charts in FET datasheet
Looking at following datasheet: https://www.onsemi.com/pub/Collateral/2N5457-D.PDF
I'm puzzled as to why there are multiple "typical characteristic " (pairs of) charts. As far as my ...
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What's more important, sensitivity, resolution or uncertainty when talking sensors? [closed]
If you had to choose just one characteristic, what would you predominate among this static characteristics? Sensitivity, resolution or uncertainty.
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MQ-4 sensitivity characteristics - raw data
I need to convert Rs/Ro ratios of my MQ-4 sensor to PPM. For that I found the sensitivity plot in the datasheet (https://www.sparkfun.com/datasheets/Sensors/Biometric/MQ-4.pdf). However that is a pdf ...
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LTSpice, plot a current–voltage characteristic
I have LTSpice on macOS.
I would like to plot in x-axis the voltage v(2) and in y-axis the current I(R1).
But, when I add traces ...
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Physical Properties of Memristor from I-V characterestics
I'm trying to understand what an IV plot of a memristors tells me in terms of physical properties. So these are the questions with the relevant plots:
If I have a pinched hysteresis loop that does ...
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what does nominal numbers of electrical machines mean
I got confused about rated numbers of generators and motors like rated voltage and rated power .
I know nominal numbers of electrical machines are numbers which the machine is designed to operate but ...
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Vector monitor, purpose of a third "green gun" connection
I recently came into possession of a vector monitor, as shown below (Vector Monitor, Model: IO-1128, from Heathkit). Its got a red, blue and green "gun" connections. However, I am not sure ...
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dsPIC33 ADC: Why is the minimum TAD interval such an oddly-specific number (117.6ns) for 12-bit conversion?
I'm writing the firmware for a data-acquisition board using the dsPIC33FJ64GP804 MCU and I noticed something strange reading the electrical characteristics for 12-bit A/D conversion:
The ADC clock ...
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reverse bias of the gate of an N-channel enhancement mosfet
So how negative can I drive the Vgs of an N-channel Mosfet before damage occurs? Datasheets specify BVDSS and BVGSS but these are "forward" breakdown voltages -- ie the absolute maximum Vds before ...
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Induction motor: T-Slip Characteristics look weird
I was recently doing a first-course lab on Induction Motors.
We were asked to plot the torque-slip characteristics of a 4-pole 3 phase induction motor (3.7kW).
I just analyzed the data I plotted from ...
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How BJT Collector current behave in common base saturation mode?
I'm trying to understand the characteristics of bjt in different modes of operation . .when it comes to the saturation mode of operation in common base configuration ,some books says that the ...
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Determine efficiency, voltage, current from motor characteristic curves
I would to identify efficiency, voltage, current for a particular Brush less DC motor in our lab given characteristic curves.
Electrical specifications are
The operating conditions are
...
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Voltage transfer curve; MOSFET
How to classify the voltage transfer curve into various regions, as shown,
(In the image, \$V_0\$ refers to \$V_{DS}\$ and \$V_i\$ refers to \$V_{GS}\$)
Since, the various regions of operations are ...
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Torque-Speed Equation for Induction Motor
I am looking for the Torque-speed equation on an Induction Motor that is used to draw the curve.
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Enhancement type MOSFET - channel formation
In an enhancement type MOSFET (an n channel one assumed here), when a positive gate to source voltage is applied, the holes of the substrate near the gate move deeper into the substrate away from the ...
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Temperature-Dependent Electrical resistance Si and SiC
In a power electronics device, it seems that silicon carbide (SiC) has a higher variation of electrical on-state resistance with temperature in comparison to silicon (Si). Does anybody know the reason?...
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Formula for BJT common emitter output characteristics curve
I collected experimental data of input and output characteristics of a BJT NPN in Common Emitter configuration. I need to find the right function to fit the Ic vs Vce, but I'm not finding it. I've ...
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Ideally, what sort of characteristics should a transistor have for a regular linear amplifier?
Most of us recognize the graph of \$I_C\$ against \$V_{CE}\$ for different base currents (\$I_B\$): -
And, ideally (as we are taught and believe) we would prefer the "constant current" part of the ...
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For the same JFET why are there two curves in a Transfer characteristics graph?
I am trying to learn about n-channel JFETs from David. A. Bell's book. In the transfer characteristics graph, there seem to be two curves as shown. Note that VGS(off) = Vp
As you can see, one curve ...
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Testing a diode's electrical characteristics with temperature control
I would like to test a few diodes electrical characteristics at their device low limit, ambient, and device high limit temperatures.
I was thinking of using a Peltier element with a heat sink, but I'...
user165397
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Current drop a certain vds in a transistor
I am measuring the I-V characteristics in a transistor using a 2 channel source measurement unit (SMU) when I change the \$V_{ds}\$ and measure the current while connecting the gate and the source to ...
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Are parts parameter supposed to agree with each other in datasheets
Say, given a power BJT that has a \$V_{CE_{SAT}}\$ = 2V and rated at \$I_{C_{MAX}}\$ = 6A, but \$P_{MAX}\$ = 8W.
Clearly, even only considering the \$P_{C}\$, it cannot continuously provide that ...
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What is this antenna called, and what does the polarization and radiation pattern look like?
I was searching for helical antenna designs and stopped here to look around when I saw this antenna (below). I am guessing it has a somewhat omnidirectional characteristic that would be advantageous ...
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Different methods to perform UIS testing on a Power Mosfet (EAS)
I am currently looking into building a circuit to test for avalanche stress of a power Mosfet. Normally for this specific test, you would want to create a circuit that looks as follows:
simulate ...
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IV relation changing load resistor of a solar cell
Consider the configuration in picture, where a solar cell is kept at fixed distance from a light source and the load resistance is changed among different values.
simulate this circuit – ...
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