mosfet

For identical absolute max current and voltage ratings, which one is more reliable, IGBT or MOSFET? For 600v, 20A for example, MOSFET is significantly cheaper than IGBT. I'm not sure if it is by chance, but if mosfet is truly cheaper for similar thermal and electrical characteristics, then is...

Hello everyone, I would really appreciate if you could help me Im making a mini fridge controller (PID), using a 4n25 optocoupler, an IRFZ44n Mosfet and a tec peltier I connect it to a 12v and 3 A and arduino 5v As soon as the arduino code is uploaded and I connect it, the mosfet starts to...

It's been forever and a day since I've been here, but I'm dipping my toes back into electronics design Anyways, I have a "dumb" device that's connected to a hat on my Raspberry Pi 4. Unfortunately, due to some signaling issues with the dumb device, if it's on when the Pi powers on, the Pi gets...

Hello, I was hoping to get some help/advice on a personal project I'm working on that requires quite a bit more electronic hardware involvement than I'm used to. I can manage code, computers, microcontrollers etc fine but I'm not very well educated in general electronic hardware at all besides...

Hi, I have a crt monitor that dosent work now, I figured out that a mosfet was running very hot and was shorting the smps(making it stop and restart), I removed it and saw that theres no short circuit now and the led/buttons works but theres no picture, it's the mosfet that generates the B+...

Hi, I have to switch a high current(DC 12V@~60A approx.) for a battery-supplied circuit. But its on-status resistance should be as low as possible. Because you know the Ohm's Law, the I is going to increase up to even 100 amps sometimes, so a very small resistance creates a big difference. I...

I'm trying to understand how to drive the MOSFET's in the two-switch forward, I designed a 200W DC-DC converter, 50V input 100V output but I was looking for using an MCU and IC in this case I have an IR2110 high side low side for the gate drive, I don't know if it is possible to use it? and if...

Hi readers, is there a P-channel Mosfet with Vds of -400V but has very low Rds(On) because I want an efficient mosfet ? I a planning to power a 400V device and its negative terminal must be connected to ground (That's the reason why i use PMOS and not NMOS). I find a lot of NMOS that can...

Hi, I'm currently struggling to solve the biasing of this circuit without ORCAD (so as an exercise). The parameters given are referred to all thre PMOS. A previous polarization with LAMBDA=0 gives Vout=1.25V. I'll call the Early resistance r0 . I've had no problems biasing the mosfet M3...

Hi readers, is this the correct way to power a PMOS mosfet? I am unfamiliar with PMOS but quite familiar with NMOS. Question: How to use PMOS to power a 10 Ohm Load? Thank you I attached LT Spice files below. Help me understand by attaching or posting a new schematic :) Thank you and have a nice...

I recently learned using transistors now i want to buy a kit for some common MOSFETs so that i can experiment and learn, can you please advise some N-Channel MOSFETs for switching and PWM purpose, (mostly using for turning on/off electronics modules, Relay & Motors) 100mA to 800mA 3.3v battery...

Good morning, I am involved in a power electronics project where it is necessary to attach thermocouples to most possible points on a PCB. This includes tracks, plastic MOSFET surfaces (can reach 120ºC), and metal drain pads. I have read about several methods for this approaches. Summing up...

I have an IRF640 N-channel MOSFET that has no protection on the circuit, and heats up my heatsink very fast. I know I need a Zener diode to "protect" the MOSFET, but is there anything else I need, and where do I put it? CLARIFICATION: the circuit does work, but it is killing the mosfet, it heats...

Hi, I tried to simulate mosfet switch for 2x10W LEDs, but there is a huge voltage drop on the mosfets. Why 5V logic signal can't open mosfet? LEDs specs: 10V 1A

I am making a boost converter following this Tutorial but I don't have the exact MOSFET. I have 2 motherboards laying around and they have some MOSFETs on them some of the names are: P3055, K3918,6670AL(datasheet inserted). There are high switching speeds but the datasheets don't have the max...

Hello everyone. Please, help me to understand why D1 of the circuit below exploded when I increased the voltage to 32v. Everything was working perfectly at 22V, then I increased the voltage to 32v and D1 exploded. As you can see from the schematics, that diode drives nine N-Channel MOSFETS when...

Good afternoon to everybody. First post over here! :D I am working on the estimation of junction temperature from top case temperature measurement. I have seen that manufacturers avoid the characterizing the molding this resistance which is crutial for this purpose. From now on I will take...

My goal is to rewire a Peltier AC unit by removing the on-board PSU and Analog temperature controller. I would like to convert the AC unit to Cool and Heat by reversing the Peltier modules polarity. Then control both heating and cooling functions with a PID. Then running it all with an external...

Hello! I need to decide what I should understand/learn to go ahead with my boost converter and stop killing my MOSFETS in the wild. I'm not a engineer (at least not one of the 'right type') and electronics is just a hobby. I have a boost converter that's basically scheme.jpg (MOSFETS are...

I am having a problem switching the positive input of an optocoupler to ground using a mosfet. Please look at the schematic and plots I did. The mosfet gate is getting 5V, but the output attached to the 1.5K input resistor doesn't go to 0V?