Questions tagged [device-characteristics]

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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 ...
EE18's user avatar
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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 ...
Hazardous Voltage's user avatar
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1 answer
36 views

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 ...
313Ctron's user avatar
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2 answers
132 views

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.
Saber Shahavi's user avatar
3 votes
2 answers
560 views

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 ...
Nick_2440's user avatar
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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 ...
Divya K.S's user avatar
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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 ...
user3728501's user avatar
1 vote
1 answer
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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 ...
EdL's user avatar
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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 ...
mamawmaw's user avatar
3 votes
3 answers
736 views

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 ...
Nick U.'s user avatar
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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:...
Sparsh's user avatar
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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?
Isaac W's user avatar
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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 ...
Noob123's user avatar
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2 answers
257 views

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 ...
Tomáš Macháček's user avatar
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1 answer
51 views

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 ...
thinwybk's user avatar
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586 views

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 ...
LeonTheProfessional's user avatar
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1 answer
120 views

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 ...
sarah 's user avatar
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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 ...
satan 29's user avatar
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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 ...
Bartosz's user avatar
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-2 votes
2 answers
79 views

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.
krm76's user avatar
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2 votes
1 answer
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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 ...
andy_m's user avatar
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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 ...
Lisa's user avatar
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2 votes
2 answers
240 views

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 ...
Lost In Euclids 5th Postulate's user avatar
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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 ...
Alireza Amooei's user avatar
2 votes
1 answer
253 views

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 ...
plu's user avatar
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3 votes
4 answers
472 views

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 ...
anrieff's user avatar
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2 votes
1 answer
495 views

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 ...
jrive's user avatar
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1 answer
51 views

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 ...
William R. Ebenezer's user avatar
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1 answer
313 views

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 ...
adh's user avatar
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2 answers
364 views

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 ...
BhanuKiran's user avatar
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2 answers
5k views

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 ...
Aravindh Vasu's user avatar
1 vote
1 answer
923 views

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.
scico111's user avatar
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0 votes
1 answer
630 views

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 ...
Curiosity's user avatar
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1 answer
94 views

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?...
Mohsen AB's user avatar
0 votes
1 answer
850 views

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 ...
Alberto Perro's user avatar
4 votes
2 answers
276 views

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 ...
Andy aka's user avatar
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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 ...
VenkiPhy6's user avatar
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1 vote
1 answer
130 views

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'...
Donald Krambeck's user avatar
1 vote
0 answers
114 views

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 ...
ahmed.abubakr's user avatar
1 vote
3 answers
62 views

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 ...
Majin_Boo's user avatar
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6 votes
2 answers
532 views

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 ...
uhoh's user avatar
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0 votes
1 answer
1k views

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 ...
12Lappie's user avatar
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0 votes
1 answer
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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 – ...
Sørën's user avatar
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Why is the base to base characteristics of UJT a straight line passing through the origin?

Why is the base to base characteristics of UJT a straight line passing through the origin? and what do you mean by offstate resistance of ujt??
twinkle99's user avatar
-1 votes
1 answer
351 views

How to detect type of my DC motor?

According to my last question (summery for lifting one 0.6Kg load across one m1 lead screw up to 20cm at 2 Second), I found one motor in my stock ware so it's type is : RS-540SH 00536725 SO when i ...
Soheil Paper's user avatar
2 votes
1 answer
2k views

Transistor absolute maximum Collector-Base voltage more than Collector-Emitter voltage

In the Microsemi 2N918 NPN RF transistor datasheet, the absolute maximum ratings are given as: The fact that \$V_{CBO}\$ is so much greater than \$V_{CEO}\$ has me confused. Additionally, the ...
user2943160's user avatar
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