Questions tagged [mosfet]
Metal-Oxide-Semiconductor Field-Effect Transistor, a type of field-effect transistor (FET). MOSFETs have an insulated gate, the voltage of which determines the conductivity of the device. This can be used for amplifying or switching electronic signals. (From: Wikipedia)
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Who updated the symbols for MOSFETs and when did it happen?
This is a question about the history of electronic symbols and standards.
I'm finally starting to learn how discrete devices actually work from the entertaining yet incredibly insightful and ...
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Power amp for final stage
Continuing my amplifier design, I don't know what to do after this. AFAIK I need to make a push-pull AB class power amplifier with global negative feedback because the impedance of AB class itself ...
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Driving 12 VDC Relay from 24 VDC using PWM
I have a Phoenix Relay and it has to be driven by using a 12 VDC coil voltage.
My question is, I have 24 VDC available to me. Can I use a Logic level MOSFET which is driven my a PWM from my MCU and I ...
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TCAD IV curves have fewer data points for some gate voltages (same SDEVICE deck) in Synopsys Sentaurus Device (TCAD) [closed]
I’m running Sentaurus SDEVICE simulations of a gated PN junction and sweeping gate voltage (4 values). The SDEVICE code/deck is identical for all runs except the gate bias, but the extracted I–V ...
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Full schematic review: 24V truck power module (eFuse + bypass PMOS + DC-DC path switching)
I’m designing a 24V truck (automotive) power module and I would like a schematic review before ordering the PCB.
System overview:
Input: 24V truck battery system (can rise to ~29–30V while driving)
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Driven LC Tank MOSFET Ratings Question
I am studying the driven LC tank, specifically applied to an induction heater circuit. Consider the following simple circuit:
simulate this circuit – Schematic created using CircuitLab
We can ...
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Why would a dual MOSFET be connected like this?
In the Pinecil schematic, you can see the HSM4313 dual P-channel MOSFET that drives the heater connected in the following way. Note that the node labelled A goes to the heater, the other end of which ...
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2d FET output curve [closed]
For my project, I made a 2d FET using WS₂ as a channel. I made a heterojunction structure using graphene as a gate electrode on a Si substrate, hBN as an insulating layer on it, and WS₂ as a channel ...
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What alternative is there to using relays to switch 3 to 6 VDC power line with unknown (don't care) polarity?
I am looking to build a Halloween prop controller that utilizes the prop's "try me" port as a trigger. They all (for the most part) use one of two types of connectors, but I do not know if ...
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Current Mirror: Output resistance of stacked MOS used as current source
I am trying to calculate and simulate the output resistance of a stacked NMOS transistor used as current mirror load and I have a few questions about hand calculation and simulation setup.
The circuit ...
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Interpreting Ls for high-side MOSFETs in TI’s gate-resistor formula
TI’s application report “Fundamentals of MOSFET and IGBT Gate Driver Circuits” gives the recommended gate-resistor value as: Rg = 2 * sqrt(Ls / Ciss) - (Rdrv + Rgi)
The note defines Ls as the sum of ...
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12V Automotive Control with 5V Logic
Background
I'm working on a personal project to control auxiliary lights on the front of a car. The lights themselves are powered directly from the battery, and are switched on using standard ...
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Controlling power for 24DC water pump on autonomous agricultural planter prototype
This application is for an autonomous agricultural field planter. I need to turn the power on to a 24VDC water pump on the planter with a BeagleBone Black so long as the water pressure, monitored over ...
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How to select the closest spice model from the manufacturer series?
I dont have the MOSFET spice model for STD2N80K5. How should i be selecting the closest MOSFET model from the manufacturer list? Should i be looking for a match of Vds or Rds on or current rating? The ...
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High Side Switch [closed]
What is the theory behind how a high side switch works? I could use AI to figure out the answer obviously. But I’d like to hear your opinion as I think it would be better.
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