Questions tagged [pwm]
Pulse-width modulation, is varying the duty cycle of a rectangle wave, usually with a constant frequency.
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How can I fade some LEDs and leave others solid with the TLC59282DBQR?
I'm controlling LEDs on the TLC59282DBQR with OSC/UDP messages. I send /led/control to light the first 16 LEDs on the first driver, ...
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Analog pulse width detection [closed]
I have to make an analog circuit that the input is a pwm, when the pulse width is 1000ms the output must be 0 and when the pulse width is 750ms the output must be 1, i tried using an 555 with a ...
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Grounding issue with PWM fan controller on Raspberry Pi Pico to drive 12 VDC fan
I'm trying to build a PWM fan controller for an industrial Noctua PWM Fan (NF-F12 IndustrialPPC 3000 PWM). You'll find the schematic below.
The fan is powered by a 12 VDC power supply (...
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PWM driver for ESP01 using IRFZ44N
Description
I am making a basic led dimmer for a hobby project. I am using ESP01 because its compact and only 1 GPIO is required for this project.
I have a extra IRFZ44N's around so didn't wanna but ...
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Need Help Increasing PWM Frequency from 800 Hz to 8000+ Hz for DC Motor Speed Control
I'm currently developing a speed control system for a powerful 12V DC motor that pulls a heavy load. To enhance system efficiency, I need to raise the PWM frequency from the 800 Hz (PLC upper limit) ...
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How to produce an intermittent square wave (produced by XY-LPWM module)?
I'm a novice DIY guy trying to make a PEMF device (Pulsed electromagnetic field therapy). According to a paper I'm reading, I need to produce two PWM waves like this (B0 and B1 in the abstract picture ...
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ATMEGA2560-16AU PWM control using AVR-C
I'm working on a microcontroller board that also features a couple of motor drivers which can be controlled using PWM signals. I also intend to precisely control the positioning of the motors using ...
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I am Seeking Help to Adjust DC Motor Simulation Parameters in LTspice for Accurate Current Modeling
I'm relatively new to LTspice and motor diagnostics, but I have managed to build a PWM-MOSFET control circuit for a DC motor. My goal is to simulate this project to evaluate potential ripple currents ...
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Supply external signal to MOSFET PWM [closed]
I fear I'm missing something very basic here but I want to remove the default signal from the 555 chip on the board and instead input my own. As you can see below I've cut the signal on the board and ...
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PCB trace width for high current motor driver
This post is a continuation of Trace width for PCB motor driver board, with a few follow-ups and questions.
Firstly, I'd like to mention again that the motors I want to use have a maximum current of 7 ...
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Trace width for PCB motor driver board
This is my first time working on a PCB microcontroller board.
I'm working on a project that involves the control of several DC motors with encoders, and I've opted to make my own microcontroller board ...
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Why is the filter capacitor (used to filter pulsing DC) overheating MOSFETs in a buck converter?
I am trying to create a microcontroller (Arduino) based DC to DC buck converter with CC and CV features. For now, I am using a 20 V 5 A input source. Output voltage (target voltage) is settable by the ...
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PWM Dimming of a Low-Voltage DC Incandescent Filament (Thermal Shock?)
I plan on driving some Numitron tube filaments from an IV-16 tube (datasheet here). For ease of access I'll give the key specs here:
Nominal filament voltage: 3.15V
Max filament voltage (steady-state)...
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PWMs from microcontroller are resetting
I have been designing an SMPS where the STM32F334R8t6 microcontroller provides the full bridge control signals. The microcontroller board uses a 5 V and 3 V regulator to supply the MCU and the CAN ...
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P channel MOSFET for PWM Peltier control (Arduino)
I want to control the power of a Peltier device using a MOSFET PWM controlled by an Arduino.
In order to "smooth" the power going to the Peltier, I want to add a capacitor in parallel.
The &...
