mosfet

Viewed 1 time 0 The subject is to make ro=500k, ID=100u by setting VG3,VG4 and W/L of MOSFET. And I got the exact values from Hand-calculation, and am trying to test it by using LTSpice. I did make this schematic. and DC currents of two mosfet was around 74uA (I don't know it is right way to...

Hi all, First post here and very much beginner in electronics, trying to dive in. For my motorcycle, I’m trying to implement positioning lights in the blinkers: When turning on the blinkers, the blinker blinks regularly. When the blinkers is turned off, after a short delay, the blinkers shine...

Hi. I was reading the Microelectronic Circuits be Sedra/Smith and I have some questions on Mosfets. I will ask the questions one at a time. On 4.1.3 Creating a Channel for Current Flow "Consider next the situation depicted in Fig. 4.2. Here we have grounded the source and the drain and applied...

The context of my project is I am using an ESP-01 as a "smaller" circuit that is deep-sleep capable, running off a coin cell. It turns on a larger MCU with its own battery pack and runs at a higher voltage. Both work together regarding data transmission. The first time I made this thing, it was...

Afternoon everyone, Getting rather frustated with somethign that seems straightforward to me... I have researched and corrected any mistakes I have made, done a rebuild several times, but can never get this thing to work. draws about 10mA on a 12V test voltage and thats it. nothing seems to...

Can anyone explain to me how to understand the ohmic region of a MOSFET from its datasheet, or any formula to calculate the ohmic region according to the MOSFET datasheet, let's say IRFZ44n vs IRF3710, which one has a bigger ohmic region and how to analyze them accordingly? I am not an expert...

I'm working on building an electric scooter and yesterday the speed controller had a MOSFET failure that I suspect was caused by inductive spiking. This was very surprising to me because I had a schottky diode in parallel with the motor to prevent this type of failure. I took the speed...

MC2100 RevB- I have aquired 3 of these boards (dang Proform) over time and now at a stage that all 3 have their own weird issues. I tried replacing MOSFET IR260N on two of the boards in hopes of fixing it, as I don't have a bench setup to diagnose exactly what could be the issue, I have switched...

(I am quite new to electronics and pcb design.) (necessary files are attached, tell me if you need something else ) ------------------------------------------------------------------------------------------------------------------------------------------- Hi everyone, I am making a MOSFET...

Hello! A little about me , i haven't formally studied electronics, i do not own or have access to an oscilloscope. I have been researching about MOSFETs to use an IRLZ44N as a switch in a basic boost converter, on the IRLZ44N datasheet Vgs(th) = 1v to 2v, as i undertand this Vgs(th) is the V...

Hi, I created the following circuit here. The DIM Control Pin sources a 10uA current. I am getting 0.5V of noise on that pin (looking at the oscilloscope). It probably has to do with the GNDA being connected to the MOSFETs. And probably to do with my PCB layout. Currently, I don't have...

The circuit in the picture is a chaotic generator formed from MOSFETs as opposed to op amps from the usual chaos generators. How does it all work exactly? Whilst I have knowledge of how MOSFETs work and such, the connections etc are hard to understand what they all do completely. In-depth...

Looking at HF receiver schematics on line I see many use Dual Gate MOSFET's as the first amplifier stage... and also for the mixer... mixing the incoming RF signal with the local oscillator. However all of the MOSFET's I've checked out seem to be out of production... and the ones I've found...

Hi, I'm relatively new to circuit design and I'm trying to create a circuit to turn on/off a 6V DC motor using a microcontroller. To do this, I am using an N-channel MOSFET. The MOSFET appears to be working, because the drain to source resistance when the gate = 0V is ~10 MΩ, and when the gate...

Hi, I'm studying the Zeta Converter topology for Photovoltaic Applications. In every documents, it is specified that the switch is PMOS. I don't understand why a PMOS is needed. Which are its advantages? Being a switch, is it possible to use an NMOS instead of PMOS? Obviously, an isolated...

Dear Friend i setup the following : a dc motor controlled by a mosfet In the Gate of mosfer applied a PWM signal . I change the frequency of PWM signal ( the width of the pulse is const) and the rpm is increase . The rpm begin to decrease with the frequency...

Hi, I am planning to use DMN2005 MOSFET in one of our designs. It is used at multiple places. In one part of the circuit, it is used as part of simple inverter. Drain is connected to a supply Vsc = Typ 12V, worst peak 15V with pull-up resister of 10K. Source is GND. Gate has 1K pulldown and...

I am fairly new to using MOSFET's in circuits and I am a little stuck. I want to use the IRF540N as a switch, which will receive a voltage to the gate, and 18-30 volts at the drain. I would like for the source to essentially follow the voltage of the drain as long as there is voltage being...

We kinda learned about this circuit in the electronics 1 lab, but I don't understand everything, i have some questions and unfortunatly my lab professor is quite a Karen and won't even hear my questions... Anyway, these are my questions: 1) Which elements can I mess with to increase the volume...

I'm working with this p-channel mosfet and got confused by the plots on page 3. In particular the top right plot showing the Drain Current over V_GS (voltage from gate to source). As a p-channel mosfet, I would expect the drain current to go towards infinity as V_GS approached the Gate-Source...