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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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-2 votes
0 answers
38 views

gate driver of thyristor using fod3184 [closed]

what can be a better approach to get 15v using 555 timer and FOD3184?
0 votes
1 answer
52 views

Seeking Advice for Improving a Heavy-Duty Unidirectional Conveyor Drive Using a Car Battery (PWM-Driven, Low-Side Switch MOSFET (~60 A, 12 VDC)

I am developing a robust conveyor system powered by a 12 V car battery, which requires handling significant current. Our goal is to integrate a simple yet effective drive with adjustable speed control....
0 votes
1 answer
51 views

No touch points close to the edge of the screen

Just for fun and to learn, I'm writing code to drive a 800x480 TFT with resistive touch driven by an RA8875 and an ATmega328P and avr-libc. It works fine so far but when reading touch events, I don't ...
3 votes
5 answers
117 views

Drive up to 64 coils (one at a time)

I want to drive up to 64 (PCB) coils at 5V / 200mA using a PWM signal from a micro controller. I only need to control one coil at a time. So I have two questions: How can I multiplex the PWM signal? ...
2 votes
1 answer
61 views

Problems trying to develop a stepper motor driver with TB6600

I am developing a stepper motor driver using the TB6600HG. However, when I plug the motor, all I hear is a faint buzzing sound, and the motor does not rotate. When I send commands to rotate, I can ...
1 vote
0 answers
67 views

How can I find out if High Frequency Injection (HFI) is being used in a Sensorless BLDC motor?

I have a small BLDC sensorless motor that runs at 34 V DC, reaches 40K RPM, has low resistance(5 ohms) between its phases. Its own driver manages to run this motor at really low speeds, 1K RPM, at ...
0 votes
1 answer
176 views

USB Device Intermittent Disconnects

I have Xilinx Eval Board(SP605) with USB-UART bridge(SI CP210x). The board is connected to Win10 Computer USB port. The USB communication is failing intermittently when running tests. Observation so ...
2 votes
2 answers
199 views

The functionality of a driver circuit

I was requested to make a laser driver circuit for a course project. After some research, I found this circuit. Can someone explain how this circuit works? What is 1R (R5&R6)? Can it be replaced ...
0 votes
1 answer
169 views

Inrush current and number of devices per MCB

I'm looking at some LED drivers meant to be powered by the regular mains voltage (230V). The datasheet specifies how many drivers can be connected to a single Miniature Circuit Breaker (MCB) on ...
3 votes
5 answers
672 views

MOSFET driver: Totem Pole or NPN Self-Biasing Turn-Off Circuit

I am building a project, where I want to drive some MOSFETs to control for example a 50W 12V LED and it brightness with a PWM signal from an ESP8266 with a frequency in the range of 1-5 kHz. I found ...
0 votes
2 answers
1k views

Stepper motor shaft vibrates, and vibrates the load

I am new to the electronics hobby so any help 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)...
0 votes
1 answer
67 views

Troubleshooting an RF driver for acousto-optic deflectors [closed]

I inherited an old acousto-optic deflector scanner but the catch is that one axis isn't working, and I want to troubleshoot why. These acousto-optics deflectors are powered by an RF driver and that's ...
0 votes
1 answer
454 views

Visible light communication LED driver

I want to do “RC current shaping circuit” on LED for predistortion,but I don't know how to calculate “R” and “C”, because I measure the Voltage waveform across a LED doesn't have this waveform,so I ...
0 votes
2 answers
55 views

Long falling edge of a VCSEL laser's pulses

I've been trying to drive a 940nm VCSEL (Part No. V105Q131A-940) with an iC-Haus HG20M VCSEL driver. When given short pulsed signals (pulsewidth of ~100us), the optical signals detected by a ...
1 vote
1 answer
176 views

Inconsistent values read from PCA9955B error flags

The PCA9955B is a 16-channel LED driver that features programmable PWM and current and has gradation support. It also features open/short detection for all of the 16 channels, which is reported in the ...
0 votes
1 answer
18 views

Pololu DRV8833 not working with pico

I am trying to use a Pololu DRV8833 driver to drive a DC motor via a pico. Below is the setup ...
0 votes
2 answers
179 views

Request for comments/critics on latching relay driver

I am a beginner in electronics and would like to request comments and critics for the following circuit I have designed: The objective is to drive a two coils 12V bistable relay upon the state of a ...
0 votes
1 answer
207 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 ...
0 votes
2 answers
99 views

Best way to generate a variable clean DC current

On one end I have an amArduino or other microcontroller. On the other end I have a small electromagnet coil with about 20 turns of 1 inch diameter. I need to drive this coil with some precision (say 5-...
0 votes
0 answers
17 views

Ceiling fan dual color lighting switching

Some ceiling fans now have two different sets of LEDs, of different color temperatures, which are selected by switching the power on/off. I would like to know how this switching circuit works, it has ...
0 votes
2 answers
139 views

Review my power MOSFET motor control circuit - rev6 - it works! (or does it?)

Software engineer dabbling in electronics here. Based on copious amounts of feedback from this community (and purchasing a copy of 'Art of Electronics, 3rd edition') it seems to work! Q1 and Q2 are P-...
0 votes
2 answers
81 views

MOSFET or IGBT for DC Motor

Hope you all have an idea. I've got a DC motor (universal, maybe?) with 2 brushes that was running on 120VAC with a bridge rectifier. Says it's 13Amp. I'd like to PWM drive this motor from battery ...
0 votes
3 answers
784 views

How are such ICs called ? (Level-shifter + CMOS push-pull driver)

A lot of times I need a circuit like below. Namely, a logic level signal should set a higher voltage (e.g. 12 V) and higher current (few 100 mA, but not Amps) push-pull stage to a hi/lo state at ...
0 votes
0 answers
64 views

Driving SH8601 OLED display

I have purchased an OLED display based on SH8601 driver IC. But I didn't get any support for driving the display or any source code. I was left with a initialization code provided by the vendor. R2A ...
1 vote
1 answer
125 views

Best decoupling capacitor part or series? [closed]

I am using motor driver, for PVDD as per datasheet I provided decoupling capacitors 100nf close to each pins (4pins) and a bulk capacitor 10uF as common both are X7R ceramic. I see some article ...
0 votes
2 answers
75 views

What's the function Q32 in this schematic? - Waveshare E-Paper driver

As I understand, the EPD_RST signal controls the BJT (Q32) which controls the FET (Q31). In my setup I have EPD_RST connected to an IO on an ESP32 and VCC_INT connected to 3V3. My question is, is Q32 ...
2 votes
1 answer
2k views

Monster moto shield + Arduino +Pololu 12V, 29:1 Gear Motor Encoder hardware problem

Overflow enthusiasts! I am trying to build a balancing robot with two wheels, using the polulu gear motor as mentioned above. In order to have a strong motor driver,the monster moto shield is used in ...
0 votes
3 answers
140 views

While testing unloaded half-bridge, driver self-destructs

I have an IRS2153D configured so that the driver power supply is separate but not isolated from the half-bridge power supply. As soon as I place 12 V across the unloaded half-bridge, the driver bricks ...
0 votes
0 answers
37 views

Motor and Controller to spin Camera Array

I am in over my depth with respect to motors and drive hardware. Problem The motion control solutions I have tried have failed due to torque insufficiency and noise. Seeking I am seeking motion ...
0 votes
0 answers
64 views

Review my power MOSFET motor control circuit - rev2

Software Engineer dabbling in electronics here. Looking to create a simple "jelly bean part" motor driver using MOSFETs to have an alternative to an IC like the DRV8825. This is revision 2 ...
0 votes
0 answers
50 views

LED dimmer driver board

I am all very new to the electrical stuff and perhaps this is an advanced project but hopefully someone can at least point me in the right direction. I am looking to create a PCB that will allow me to ...
1 vote
0 answers
83 views

Schematic of proportional valve driver

I am not the most competent person in electronics, so I am faced with a question. in my project I need to control a proportional valve asco202. NXPERIA in its article gives the following scheme: The ...
1 vote
3 answers
115 views

Programming microcontollers using drivers

I was wondering if I could have some advice. I need to design a PCB which will have a USB-micro interface. The design will be manufactured with a lot of units and can't be programmed before ...
1 vote
2 answers
496 views

Controlling multiple servos and servo driver through Blynk

I'm working on a project to control multiple servos using a servo driver, through sliders on Blynk. I'm using: ESP8266 WeMos D1R2 microcontroller (wifi connected) Adafruit PCA9685 Servo Driver Blynk ...
-1 votes
1 answer
1k 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 *...
1 vote
1 answer
84 views

Rds(on) value of MOSFET constant current LED driver IC

I am testing a non-isolated APFC buck constant-current LED driver IC (model no.: BP2362XH) in my LED driver circuit. It operates in critical conduction mode (according to the datasheet). There are a ...
0 votes
1 answer
40 views

Optoisolator between uC y IR2110?

I am working on a brushless driver, which has 3 IR2110 as a mosfet driver and as a microcontroller I use a stm32f103c8t6 (blue pill board). Everything works correctly, but I have the following ...
0 votes
0 answers
39 views

PWM signal for DC motor vs voicecoil

I'm working on a project where I want to design my own current driver to drive different kind of loads. A friend of mine lent me a motor, an Arduino UNO to generate the PWM and half-bridge IC (L293D) ...
1 vote
2 answers
92 views

Identify LED driver IC MRVL

I need help identifying that IC used in the LED driver. MRVL 8183B0 324AFTG
1 vote
1 answer
733 views

How to DRIVE a piezo driver circuit

I want to implement a driver circuit for piezo actuators for a positioning system. For this, I require a high-voltage, low-current output, similar to the one discussed here which features a circuit ...
0 votes
0 answers
59 views

3.3V to 5V driver (push-pull) output too low

I was recently testing using SN74LVC1G17DCKR and was having trouble getting the output voltage to reach close to Vcc as per the datasheet. Vcc input is 5 V. My input was 3.27 V and I was getting ...
1 vote
1 answer
82 views

DRV8874 motor driver on a custom PCB burns immediately

I've designed a custom PCB for the DRV8874 motor driver. The problem is, as soon as I connect +24V to the board, I hear/see a sparkle on the voltage pin on the header (J1). Huh... but okay, with the ...
2 votes
1 answer
3k views

Constant Current Led Driver (non dimmable) to work with PWM

I have 18W lamps that came with non dimmable led drivers. Ive found datasheet for the main chip (ws3441), which included schematics: and internal block scheme of the chip: I'd like to add dimming ...
8 votes
3 answers
17k views

How to drive high powered LEDs as efficiently as possible

I have come across some very high powered LEDs. Datasheet for LEDs: http://www.cree.com/led-components-and-modules/products/xlamp/arrays-nondirectional/xlamp-cxa2011 For these high powered LEDs, how ...
1 vote
1 answer
73 views

Saturation of controlled voltage source

I have simulated a voltage controlled current source based on the article in the link; the LTspice file is also attached. I think my MOSFETs are saturated, so I get almost constant current on the ...
0 votes
0 answers
35 views

Increase output current from LED Driver PCA9956B

How can I increase the output current of LED driver IC PCA9956B? I want to connect LED strips 1.5 A for each output 0-23 channels. I considering power transistors N-Mosfet.
0 votes
1 answer
32 views

Driver design tips for YIG

starting a driver design for YIG input is 1mV output 25mA Specifications: BW of 2MHz will be good. 10mW input needs to be interpret into 30mA threw load coil. The FM coil data: sesitivity: 450 ...
0 votes
1 answer
223 views

Why is my Multivib piezo atomizer/transducer driver not working?

I'm tying to drive a "Moisturizing Transducer Mist Maker Atomizer Film Plate" using a simple astable multivibrator circuit like this: I can't make it work. No reaction from the atomizer. I ...
0 votes
0 answers
41 views

Low side driver for unipolar stepper motor (voltage drop or current limiter)

I need drive unipolar stepper motor which resides in device with center coil pins connected internally together. So I cannot change to bipolar driver. I use ULN2003 which works and I drive it with 5V,...
0 votes
1 answer
75 views

Will this driver circuitry work as intended to switch half-bridge FETs?

Given that the PWM_H signal is referenced to SGND and the driver is referenced to VSW (switch node of the half bridge), will the gate driver function correctly without a connection between the driver'...

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