pwm

Hey, I´m currently trying to convert a 20kHz PWM Signal generated with an ESP32 to DC voltage. Goal is to control a hydraulic proportional flow control valve with a DRV103 solenoid Driver. The DRV103 needs an analog Input Signal from +2.2 - +5V to activate the Output. With the ESP I´m able to...

I’m designing a circuit to switch a section of a 24 V CCT LED strip. I can’t add additional control lines, and the strip can’t be split at the dimmer, so I need an in-line circuit that can decode a command to toggle a switch. This board will sit between the two strip segments. The strip has a...

Hello everyone... For some time now I've been thinking about developing a new way to control/command, sets of thyristors in anti-phase, using pulse width modulation (PWM), with zero-crossing synchronization (ZC). In fact, I had already used such resources, in temperature control for large...

Hello everyone, I'm currently working on my Power Electronics term project, in this term project, I'm supposed to design a boost converter circuit to light up a COB LED, along with a control circuit to adjust the brightness of the LED. My issue is with the control circuit, I would like to...

Hello all, I have a Bidirectional, Dual Active Bridge board that is based on the TIDA-010054 from Texas Instruments. However, whenever a DC bus is applied (even as low as 50 VDC), the 3.3 V PWM signals at the power board exhibit strong ringing/glitches correlated with the switching edges (PWMs...

Hi everyone, I'm trying to generate output frequencies from 0 Hz to 10,000 Hz using STM32F407VET6 with Timer2 in Output Compare Toggle Mode. The timer clock is 84 MHz. I need to achieve: 0.1 Hz resolution up to 10 kHz Ideally, also support 0.001 Hz resolution at lower frequencies The...

Hi all, I have basic knowledge in electronic engineering but feel a bit rusty since I haven't been doing this for a couple of years. The project: I've created a PCB to program empty Atmega328P chipset, when connected to Arduino (I'm using ELEGOO UNO R3) It houses a TQFP32 to DIP32 IC test...

I've been playing around with a couple of NE555 PWM circuits in an effort to create a LED dimming solution (indicator and backlight) to include in an audio output switching circuit (like an A/B box). The goal is the widest possible duty-cycle range -- from nearly 0% off to nearly 100% on -- at...

Hello everyone, i have a roidmi eve plus with non spinning LDS(The sensor on top). The board you see is on the sensor assembly. I measure 5v coming to the board, and 2,3v on the pwm pin. The mosfet on the top left corner measures 2,3v on the gate and when i turn the vacuum on i have continuity...

Hello, I’m using a PDME2-S15-S24-S isolated power supply to power the IGBT side of the gate driver. The power supply outputs 24-ish V, and I’m using a TL431-Q1 adjustable shunt regulator to create a +16V and -8V rail. When I measure the supply rails, I can confirm +16V and -8V are present...

Hi, I'm trying to get a small dc motor to run for the longest possible time from the energy of a small solar panel with a liion battery (or cap). The solar panel output up to 40mA at 0.5v (close to max max power point). I have tested the motor, it starts at 0.142v/11mA (I can also do 24mA and...

I am trying to send PWM signals using STM32F100RBTx but it do not working. I double checked all the address but it is still the same. I wasn't sure if I was flashing at the begging but I configured the PB7 pin to be GPIO output and connected to a led and the led is working so I can flash it and...

Hi, how the real power heating current will be a for a pwm signal will be mesured in average? TrueVrms? Or will be the same like normal current. The singal is 0 to 5v. Not negative value, so is more like pulseing dc. For example, two led vf=2v connected to 9v 250ohms with a frequency of 10%hz...

I am using PIC16F877a microcontroller. My aim is control the servo motor with pwm signal. I can create the pwm signal with RB0 pin with ccs c code. I have tried the ccp1 module to create pwm signal but I could'nt. Why does not work. And I have a question about these two ways to create pwm...

I am a mechanical engineering student so only have a basic knowledge of electronics. I am using some RGB LEDs and I want to control their colour temperature and brightness. I am controlling the colour temperature with PWM but want to control the brightness with another method so the colour is...

I am working on a project (based on the PIC16F18877) to which I am planning on adding a PWM DC brushless fan. However, I have never had to work with PWM before (or even DC fans) so there are a few things I am not clear on that I am hoping to get clarification on. I just want to make sure I...

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So I have a circuit whereby a PWM signal is being sent to a demultiplexer, and the demultiplexer sends the signal to a MOSFET which takes it and allows a current to flow through the nixie tube. The higher voltage value in the original PWM signal, the more the nixie tube will light up. My issue...

I am trying to control a linear drive motor with a built-in encoder. I am using a motor driver to move the linear motor. I have calculated a PWM signal for a PWM frequency of 1kHz and a duty percent of 50% with the following values: Internal Clock = 180 MHz Prescaler = 180 Arr register...

Hi, I made a really simple PWM generator but the mosfet placed in the circuit keep getting damaged even though they are not heating up. The load in the schematic is a 20ohm heating element but i also tried to replace it with much led and resistor but the mosfet still get damaged after 1 or 2...