motor

Hello, I have DC92-02139A inverter board that I took of my washing machine. and I am trying to repair it. Washer shows 3C2 error (Driving part stop(motor overcurrent error)). The motor tries to spin in service mode, but it's only like continuous twitching a little bit. I tried to change some...

How should I handle GND and PGND when using the DRV8874 provide 0.5A current, on a very small PCB with a microcontroller? The datasheet recommends tying both grounds together, but board space is extremely limited. Is it better to keep separate planes with a single connection point, or use one...

Hi All, I have an Arduino sending digital signals through transistors, driving some DIY motor coils, simple: Arduino digitalWrite() -> transistors -> coils. It works great, plenty of force and no fire. V-in is 5 volts and each coil is 2 ohms, so about 2.5 amps per coil. One problem though is...

Hello, I recently purchased a used seismic shake table that was missing several electrical components critical to its operation. I've been able to obtain the necessary components from several sources with my only remaining issue being the software needed to run the table. I'm a structural...

I’m a senior starting my capstone project. Our team has a $1,000 budget and we’re collaborating with a professor to build a small EV with regenerative braking. For safety, we must stay under 50 V. We’re considering either a brushed DC motor or a BLDC, but I’m feeling overwhelmed trying to...

Mabuchi RS-555PH-3255 has a rated voltage of 12 volts and full-load current of 2.4 amps and a stall current of 11.8 amps, does that mean it can generate 132 watts?

According to a file i downloaded the re-140Ra-2270 motor has a nominal voltage of 1.5 volts and no-load current of 0.21 amps, does that mean the internal resistance of a re-140ra-2270 motor is 7.14 ohms?

I am trying to diagnose a circuit failure at my workplace designed by one of my coworkers for driving a particular Tubular Motor that will be part of an automation system in a bioclimatic pergola installation. The motor specs are as follows: and the circuit schematic for the Tubular Motor...

Hello everyone, I read all sort of different things about setting the correct current to drive a stepper motor, so now I'm a bit confusioed. 1. The value for current that is usually given in specs is RMS? 2. To calucate the current to drive the motor we start from the RMS current? And what...

I am using the TI's microcontroller with the BOOSTXL-3PHGANINV driver. I'm running a sensorless brushless motor using FOC. Looking at the schematic of the BOOSTXL-3PHGANINV, an INA240A1 produces on one of the three phases a Vout=Ia * Rsense * gain - Vref which sends to pin 27...

Hi all, I need your ideas again. I am trying to convert a trusty 8 year-old device (Braun Face) from an AA battery into a rechargeable. (they make rechargeable versions of this now). (It is too much hassle opening and closing the battery compartment on these. You need a coin to twist the base...

What is full load speed? What is the difference between full load speed and maximum speed? 1 website defines full load speed as the speed a dc motor develops under full torque conditions. I don't know what full torque conditions are. Are full torque conditions the full load torque or maximum torque?

Hi everyone, I'm currently working on a project where I need to power two three-phase motors using a single-phase 230V supply. Here’s the setup: Motor Details: Sanding Machine Motor: Star Connection: 1.7 kW, 4 A, 0.89 cosφ, 2840 RPM Delta Connection: 1.27 kW, 3.2 A, 0.83 cosφ, 1420 RPM Dust...

Hi All, I'm hoping some of you help me out. I want to make a power box for my trolling motor. Using a weatherproof case, I want to put a battery, charger and a combo voltmeter/USB charger inside. On the outside would be power connections, the voltmeter display and an on-off-on switch. I want...

I would like to make a device using an esp32c3 and an optocoupler to allow me to actuate a separate device comprised of a motor running from a different power source (4.2V, 6V or 12V). The esp32c3 runs from 2x AA alkalines and would wake up periodically to run the motor for a minute, then go...

Hi, I don't know how to design a motor driver circuit using MOSFET for driving the motor. what are the parameters to be considered while selecting a mosfet. How do we calculate the resistor values. how do we select the diode. I have attached a reference schematic that I came across ,kindly help...

Hello, I've been looking into online scientific articles and I was able to find a few ones about the subject. On these articles it is normally observed that the torque value of the motors doubles or even quadruples with the direct contact of the rotor and the stator while consuming the same...

Hi, I'm a beginner so please understand if I... you know... don't understand. I have the attached circuit built and when I run the motor it works fine, but when the motor stops it (sometimes) resets the microcontroller. I know it is not too little current from the supply, but more likely the...

Hi all, I have a single phase motor (115VAC 1/4hp) that keeps failing our internal leakage current test. We are measuring about 0.1mA of leakage current when the pump is plugged in, but powered off. The only thing the the live is wired into is an IEC connector then into a two-terminal SPST...

Hello, fairly new to all this but done my best to get to this stage! Im repairing a pottery wheel and am looking for a modern replacement for a STOPCIRCUIT GDU-2U-73-P1. As i understand this is a panel mount 2a, trip curve c, circuit breaker with an auxiliary contact. Looking through spec...