Questions tagged [driver]

A chip or a circuit that sends a signal with more current or voltage, or over longer distances.

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1answer
17 views

connecting teensy + A4988 carrier + motor

I am very new to electronics and I am trying to wire a teensy 3.2 to a A4988 driver carrier and a (unipolar???) motor. I have zero clue what I am doing but I am trying my best to follow the diagram ...
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40 views

Can Brushless DC Motor (BLDC) be used as Stepper Motor?

I have a BLDC motor and I am keen to know if there is a controller out there that can allow BLDC to be used as stepper motors with (holding torque and accuracy in step size) I know BLDC motors are ...
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48 views

Unable to control 24 VDC brushed motor with dev boards

I'm designing a board that has to control several DC brushed motors. The motors are SY54E-DC24V-2PCE. I didn't find a datasheet but some references like this and this. I measured the DC resistance of ...
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1answer
50 views

Potentiometer vs Arduino, How to replace? [closed]

I have a bldc motor control board(ESC) with potentiometer, the pot is used for controlling speed but I want to use arduino's pwm, so how to remove the pot and replace it with arduino connections? The ...
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23 views

WL1837MOD SDIO Control(or Wifi module in general)

There are a number of wifi module which are controlled by SDIO(as an option). I am using the WL1837MOD as a specific example but I welcome more general answers. All the documentation for this chip ...
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31 views

Stepper motor current consumption calculation

I have this Stepper Motor Driver and a Stepper Motor with the below Specs: Number of Phase - 2 Number of Poles - 10 Step Angle - 18deg Winding resistance - 10ohms Current / Phase - 600mA/Phase Rated ...
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16 views

the non inverted input on TI UC3705 or UC3706 transistor dirvers not working but inverted works fine?

DATASHEET TI UC3705 I have a UC3705 running fine on inverted input digital signal on the pin number 7 at +5 volts and pin 6 at ground from my siglent SDG1032X with a square wave 5 volt hi and 0 volt ...
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40 views

Do PWM Half-Bridge Gate-Drive ICs allow 100% DC?

I read in other questions that is not possible to use 100% DC as PWM input for drivers that use a bootstrap/charge pump to shift the gate levels. I'm talking about common brush DC motor gate drivers, ...
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1answer
43 views

How to drive P mosfet gate to ground in half bridge synchronous DC buck/ boost converter

The diagram shows the totem pole driver circuit for the Hi Side P channel Mosfet driven from PIC pin PWM output. This is part of a buck boost circuit running at 250KHz. The biased totem pole ...
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41 views

MIC5891 driver output voltage

I am troubleshooting a relay driving board that uses an MIC5891 to drive a 12VDC relay (86Ω coil). The load supply voltage into the 5891 is 12V. When checking an output with no load I get 12V. When I ...
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1answer
48 views

Use DC Motor driver for electromagnet

I need to control the force exerted by an electromagnet using an MCU. it's not a commercial item so I don't have any datasheet. Here what I know: resistance: 8,9 ohm may be powered up to 60V (with ...
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439 views

Output drive vs. absolute max output current

In many Texas Instruments datasheets (e.g. this one) there are two different stated values for current per output: Output drive, stated as 4 mA at \$V_{cc}=5 V \$, page 1. Continuous maximum current ...
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39 views

Unsure about bulk capacitor value and type for custom PCB

I'm designing a custom PCB (90x90mm approx) which is using an ESP32 module to drive 5 dual channel H-bridge ICs (DRV8835) which control 9 miniature brushed DC motors (1A stall.) The datasheet of the ...
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46 views

Driving optocoupler by a line receiver

I wanna drive TLP350 by a line receiver AM26LS32. I employed scheme 1, however, there was no signal on output. I found in line receiver datasheet that the current sign is negative so it is likely to ...
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1answer
59 views

Define the purpose of these components in the operation of this low side driver

I am trying to understand the operation of the following low side driver circuit I found in a schematic of an old pinball machine (redrawn for clarity): L1 is a Solenoid and Q1 is a Darlington BJT (...
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33 views

MX1508 motor driver flyback diode controversy

Hi I am trying to use the MX1508 motor driver with my 6V dc motor, but I've read criticism that it doesn't have flyback diodes. I'm seeing conflicting opinions online about this. For example, in this ...
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1answer
49 views

USB Qualcomm Quick Charge 3.0 on PC (Linux Ubuntu)

As nowadays PC motherboards supports USB voltage manipulation I will ask on given example hardware/software. I am using Ubuntu 20.04 installed on machine with Motherboard Gigabyte AORUS Z390 Master. ...
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1answer
89 views

Stepper motor shaft vibrating and vibrates the load

I am new to the electronics hobby so any hep is appreciated. For my application I need a quiet motor that can provide high torque at low speed. I purchased a NEMA 17 stepper motor (model is 17HS4401s) ...
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1answer
43 views

BLDC motor and drive power loss calculation for dynamic application

what I have done so far: calculated torque and speed of the motor (robot arm swinging mass) used equivalent circuit for DC motor as model for BLDC: U_terminal=L* di/dt +(I_o+ I_load)* R_ph-ph +k_emf *...
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26 views

What is proper power / driver size to use with an Osram Oslon Black Flat Led board?

I am trying to determine the proper power to send to my specialized LED board. The board consists of 6 Osram Oslon Black Flat Leds. I currently have 4 of these boards, 2 in each headlight. I have each ...
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2answers
60 views

Half H-Bridge using IR2104 doesn't work

I'm trying to build a half H-bridge using an IR2104 driver. I want to use it for driving "high power" things such as a brushless motor (100V, 40A), or high power LED (200W). But it doesn't ...
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33 views

What device to power 4 directional coils to rotate magnetic field

I am trying to make a solid state device that creates a magnetic field applied on an sample that can control the field direction and strength. My current design uses a 8 coil stepper stator that has ...
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2answers
33 views

L298N Current or Voltage source

I want to power some coils using a controlled current, but I know as the coils heat the resistance changes. Will the L298N keep that current controlled at a certain enabler voltage?
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1answer
29 views

L298N minimum output current/voltage

Does the L298N have a minimum output voltage? I want to control it such that the output varies from -Vs to +Vs, does it go linearly near 0, or is there a threshold that it passes? I can't tell what ...
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38 views

Help to select MOSFET gate driver

I am implementing a system where I need to use 2 switches, 1 NMOS and another PMOS. The switches are controlled by a PWM wave that operates at a frequency of 1MHz. You can see in the attached figure ...
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87 views

How to read data from Agilent 34401a using GPIB-USB-B connection

I want to read data from an Agilent 34401a DMM directly into python or matlab so the data can be automatically recorded. However, I can't seem to make the connection. On my computer the device is ...
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1answer
65 views

1-10Hz frequency count translated to PWM for stepper motor RPM

I would like to control the speed of a stepper motor based on an input signal that consists of short 12V pulses at a varying frequency of 1-10Hz. I know this is an easy task with a microcontroller but ...
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2answers
47 views

Switching relay directly with an optocoupler

I have a relay network (more than 1 relay running in parallel), that I need to operate using a STM32 based MCU. The relay I am using is Omron G5V-1 (24v). I wanted to know if I can directly run these ...
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1answer
102 views

85W laser array driver circuit

I have an OSRAM 85W 450nnm laser array. It's essentially a large 'chip' with 24 integrated laser diodes (break it down they're approx 3.5W diodes each.) The Chinese source I purchased it from also ...
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17 views

Driver load order for multiple pcie functions

I've a pcie device with 4 functions and i want to load the same driver on all 4 functions. However, i need a specific load order such that f0 driver should be loaded first, followed by f1, f2 and f3. ...
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52 views

Wiring L298n H-Bridge Using 24V Power Supply

Need you help, re: correct Wiring of my L298N H-Bridge Driver Using 25V power supply to run two 24 DC Motors (Takanawa). I have a separate 9V Power Supply for my Arduino Board which my Bread Board ...
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69 views

TPS61180 backlight blinks once

I received SmallHD 5" display which was broken by supplying 14.4V by a mistake. It runs on 7.2V typically. The monitor is fine, just the backlight went bad. I replaced TPS61180 right off the bat ...
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203 views

Killed two Teensy 4.0s with this circuit - looking for help diagnosing

I have created a circuit for my Senior Design project at my uni. This circuit is meant to receive a signal from a contact microphone attached to a brass instrument, pre-amplify it, and analyze to find ...
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67 views

Can a voltage higher than 5V be applied to the 28BYJ-48 (5V) stepper motor?

I want to automate my roller blinds by using an ESP (NodeMCU) and I was thinking of using a stepper motor. I had a 28BYJ-48(5V) stepper motor laying around with the ULN2003 driver it came with. ...
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1answer
72 views

Driving a NEMA11 stepper motor

I got a NEMA11 bipolar stepper motor rated at 3.8V @ 0.67A, 5.6Ohm and 4.2mH. I thought to run it with the D1 mini powered via USB and using its 5Vout for the SN754410 H bridge and motor power: ...
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39 views

Brushless motor vibration/jitter/noise

I am currently using these motors and driving them off these drivers and an arduino uno, and alternatively trying to make them turn using the setup in step 6 (both with l298n and without) in this ...
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1answer
60 views

Bootstrap Capacitor Calculation

In this link it explains how to calculate bootstrap capacitor for IC Mosfet Driver. In the Vboot formula as shown there is Vgsmin (minimum gate source voltage). Is Vgsmin the same as Vgs or not? ...
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34 views

Is my calculation for stepper motor peak current correct?

I'm planning on using an RS PRO 892-8732 bipolar stepper motor for a project and was following an online guide to familiarize myself with stepper motors. As the motor is bipolar, I'm also going to ...
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63 views

How to calculate this capacitor value?

How to calculate this capacitor on pulse transformer primary? I've tried 470 nF but the PWM on capacitor's output lost its level, normally both PWM are 0 to 12V, but when I put this cap, the PWM on ...
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1answer
87 views

Pull-up resistor

I am making a BLDC motor controller , so can you tell me the use of pullup resistor connected in the feedback of hall sensor.And is HO is equal to VB voltage when driver circuit operates ? Please ...
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36 views

Small single phase induction motor - triac control for startup and run

To repair a control board for a small single phase induction motor (35W 0.38A) I created this schematic to help me understand how it operates. The motor was overheating and not starting/running "...
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1answer
42 views

H Bridge Gate Driver Current Sensing

I want to build my own 120A Electronic Speed Controller and decided to try it with the DRV8305 IC. I am by no means a hardware expert, so go easy on me. On page 45 of the DRV8305 datasheet: https://...
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1answer
22 views

Single buffer line from 74ABT244 to 16 inputs for 74AHC245?

I am designing a circuit which will buffer 3.3V input from Raspberry pi using 74ABT244D,623 and there will be 4 output chains on the PCB. Each chain will be connected through FRC to a second PCB with ...
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1answer
54 views

Modify the output voltage on a PWM controller to fall within LED driver range

I'm trying to use a simple PWM controller (this) as a dimmer for a Meanwell LED driver (this). The driver accepts PWM dimming but needs a voltage range of ~2-8V, and the PWM controller outputs 7-12V ...
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48 views

Why can't I have a PWM signal with 5V in the PCA9685 PWM driver?

I've got a BLDC motor which I can control with a PWM signal ranging from 0V to 5V. So I use the PCA9685 PWM driver to create a signal. The PCA9685 product page at Adafruit says this about the output ...
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1answer
102 views

My LED driver keeps blowing up when connected to a Lipo battery

I bought this LED driver for my Cree XHP70.2 LED The driver specs are: Input voltage: DC7V~15V Output voltage:DC6V Current: 4-4.5A Single mode full power I connected the driver to a power generator ...
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28 views

Valve driver specifications

I need to control a NSF/ODE JM R1 2/2 valve. Here the datasheet (Gofile link). I cannot understand the electrical requirements. It says: Power: 5W DC Running power: 10 VA AC Startup power: 15 VA AC ...
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30 views

Replacement for obselete Infineon TLE52062GAUMA1 device?

I have an existing system that I wish to replace one of these Infineon TLE52062GAUMA1 motor drivers in. It's a H-bridge 40V/5A driver in a TO263 package. (https://ie.farnell.com/infineon/...
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1answer
90 views

How could one “inverter control” convector heater be more electrically efficient than another?

I'll have to explain it step by step so that you have no chance to misunderstand what I'm asking about. First, what a convector heater is. It's a plasma TV shaped box usually made of sheet steel. ...
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82 views

Do I need a driver for a single laser?

I want to hook up a 9v battery to a laser diode(linked to the ones I will get), but have seen laser drivers scattered across the internet and vaguely have heard of them. Do I need one to use the laser?...

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