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Questions tagged [mosfet]

A type of field-effect transistor. Use this tag for discussing MOSFET circuits.

The metal–oxide–semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) is a type of transistor used for amplifying or switching electronic signals.

References

See also

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When should I use a transistor, mosfet, and when should I use a relay?

I am used to relays some, and they are useful, especially for large loads like a incandescent light bulb or other 120V AC device. However, it seems like overkill to use a relay for a bunch of LEDs linked together (parallel) that use 60 mA (too much…
Anonymous Penguin
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RGB LED Strips with Arduino

I am trying to control an RGB LED strip with an Arduino. I have followed the tutorials in both of these websites: Using MOSFETs: https://learn.adafruit.com/rgb-led-strips?view=all Using LED Amplifiers:…
lomas09
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Choosing the right mosfet to switch on-off a neopixel strip

I,m trying to find the right mosfet or transistor to switch on-off a neopixel strip to safe battery power on a Lipo 3.7v using a pro mini 3.3v. My Animation-Setup and Power Comsumption with 35 Neopixels is : Sparkel : 20mA Knight Rider :…
Jupiter Moll
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Using a MOSFET module to control DC LED PWM

I've seen some similar questions here for using MOSFET to control 12V LEDs But apparently the only MOSFET currently available to us is a 2-MOSFET high power trigger module, details in the link…
user31305
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Does an I²C IO Expander needs additional resistors for outputs?

I have following setup (see also schematic in the end) Arduino Nano is connected via I²C to the PCF8575C (link) IO Expander. Both, SCL and SDA have 10kOhm pull-ups to 5V. The Expander pins are connected to a MOSFET-driver that turns on/off 12V LED…
Maximilian Wiens
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ESP8266 Wemos D1 Mini Pro v2.0 - Load sharing and battery

I have a simple question regarding the new version of Wemos D1 Mini Pro v2.0 and specifically about its load sharing circuitry. Schematic is here : https://www.wemos.cc/en/latest/_static/files/sch_d1_mini_pro_v2.0.0.pdf Battery charger is TP4054 and…
Vassilis Papanikolaou
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DFPlayer Mini does not boot reliably after being powered down

For a low power project, I need to power up the DFPlayer Mini module, let it say something, and power it down again using an Arduino Nano (w/o power regulator and LEDs). In the idle time, the Arduino will go to deep sleep. This is to be repeated…
Kilroy
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Why does controlling power with a transistor interfere with MHZ19B's serial communication?

I've been trying to turn off an MHZ19B (datasheet and teardown photos: revspace.nl/MH-Z19B). I've used an Arduino, NPN, PNP transistors and mosfets as well as the diagram below for connecting the sensor to an ESP32. In all cases, PWM communication…
Constantin
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Arduino 5V pump digital pin

I am trying to control a 5V pump with arduino and ultrasonic sensor however i can't make it work with the pump connected to a pin. I saw on the forum that you need transistor or relay but i don't understand why ? Thanks !
Thomas Sxt
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How to control an 12V 2A Car lamp using relay or MOSFET in Arduino

I am working with the project controlling an 25W 12V Car lamp. I have a 12V car battery. I want to control it with the Arduino using a relay or MOSFET. Any suggestion for my project would be appreciated.
nandy
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Switch on/off LED 24V using a MOSFET

I try to switch on/off IKEA Ledberg LEDs which are powered with 24 V using the setup from this tutorial video: https://www.youtube.com/watch?v=sVyi7yWuXxs I use a IRLB8721PBF MOSFET. When I switch the output from HIGH to LOW the LEDs shine a little…
H0ttenburg
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Alternative for IRF520 mosfet in Arduino shutdown schema

I’am using IRF520 mosfet according to this schema to shut down Arduino by low level on output to 10K ohms resistor Schema of my device is The issue is that IRF520 took too much place Is it possible to substitute IRF520 with smaller…
Stepan Novikov
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Driving power MOSFET from 3.3v or lower Arduino Pro Mini

I want to control a low voltage (hobby class) motor with a 8Mhz/3.3v Arduino Pro Micro. I'd like to power both from 2 alkaline cells. The motor draws approximately 1 A @ 3V with new batteries. I would be doing PWM of a couple of channels at the…
Zeph
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Using N mosfet to switch ESC to BLDC phases

I have an ESC that powers 36v 3 phase BLDC motor. The ESC has limited functionality and can power motor only in one direction. If I switch manually two of the ESC to Motor phase connections, than the motor direction will change. Now, I want to do…
Naho
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RGB LED strip with Arduino

I am trying to control an RGB LED strip with an Arduino. I have followed the tutorials in both of these websites: Using MOSFETs: https://learn.adafruit.com/rgb-led-strips?view=all Using LED Amplifiers:…
lomas09
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