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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30 views

Mosfet drive for inverting buck boost converter

I'm working on an inverting buck boost circuit for uni and have come up with the following schematic. I'm ordering quite expensive parts so I wanted to get some opinions and advice as to whether it ...
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1answer
32 views

Help in understanding Audio line output stage

I was trying to understand the audio line output schematic shown below but couldn't make sense of it. This circuit comes after the output of an Audio DAC PCM1725, followed by an active 1st order low ...
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42 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 ...
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35 views

How to calculate the power dissipation of a receiver and a driver?

I'm using the AM26LV32E receiver and the AM26LV31E driver and need to calculate how much power is dissipated on them (max). I've been told I can calculate this using: (1) For receiver: ...
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30 views

LCD Driver Questions [closed]

I recently disassembled some old Night Vision goggles (Jakks Pacific Night Vision goggles) and found a 420x234 LCD Panel inside connected to a 40 pin ribbon cable. Do you know of any drivers I could ...
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24 views

Driving piezo scanner tubes using the driven internal electrode configuration

I'm planning on doing a project involving a piezo tube scanner (PTS). The PTS will be used for 3 axis manipulation of a sharp needle. PiezoDrive has a few scanners and some info on how to use them. ...
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48 views

Alternatives to op amps LM307N and TL071CN

I'am working on an amplifier/driver circuit for a spring reverb bank. The circuit is from the 90s, but still used: Accutronicsreverb Drive 1 Circuit My issues are the LM307N and the TL071CN. These ...
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2answers
59 views

Vacuum Fluorescent Display: What are the benefits of an AC filament driver instead of DC?

Question is already in the title: What is/are the benefit(s) of an AC filament driver instead of DC for VFD displays? It works with DC so why to invest in an AC driver? Anyone?
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LTC7001 Mosfet Driver is not working because of DPDT Relay

I am using a mosfet driver(LTC7001) to drive a mosfet. The mosfet is conducting 28 V continously which means its driver is always open. In a step I must reverse polarity of load by using a DPDT relay....
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Development kit for learning USB device driver development

I want to learn writing device drivers for USB devices (on linux kernel or microcontrollers, if that matters). Hence, I am looking for sample USB development kit. e.g. when I wanted to learn I2C, I ...
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24 views

How to install Arduino Driver, if it is not discovered by pc(Win10)?

I bought an Arduino Uno on amazon, and when I connect it to my pc it is not discovered by the pc. Even if I use hdwwiz and install the driver, it says that the ...
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1answer
47 views

Can this driver be simplified?

I have this driver. It has two MOSFETs and two complementary signals to drive them: The load (a bunch of LEDs) sees 5 V or 0 V and, in average, they take a maximum of 100 mA. However, the top MOSFET ...
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48 views

Temperature of Power Driver ICs

I'm using TI DRV595 power driver in an application requiring several amperes of current. My observation using thermal camera has been that at 3.5 A the driver IC core reaches temperatures around 90 ...
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Help finding an appropriate driver for brushless motor

I have a 28mm wide dc motor in the device pictured here. I have removed the control board of the device and am looking to replace it with an external driver board with RC PWM inputs for control. The ...
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1answer
40 views

Is it possible to drive a power piezoelectric in lower frequency than its own frequency?

I am driving a piezo transducer simply by an inductor series with piezo. the resonant frequency of the piezo is about 40KHz and I designed a 20KHz transducer. I'm giving a pulse voltage (using a class ...
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25 views

chip identification in synchronous boost converter

Trying to use a car 12V to 20V (laptop charger) for my TS100 solder iron and trying to find out why it shuts off, i blew up some component(s). In trying to recover from that, created a partly ...
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1answer
48 views

Controlling a relay with a MCU output pin and trying to drive a solenoid using the same power source

I've used a known circuit design to successfully (wait for it!) control a 12V relay using a 3.3V MCU pin, from the pictures you can check that I am using the same 12V power source for both (relay and ...
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51 views

Yet another constant current LED driver design, almost

I am about to design a constant current LED driver, with the following requirements: The LED string is fed with 24 V The FPGA interface is 3.3 V The system consist of 8 LEDs in a row, with ...
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SPI Timeout Issue with CH341A USB to SPI board

I'm trying to use the Aceli CH341A USB to SPI board to communicate with addressable LEDs, but it keeps timing out after 32 bytes. The board is unfortunately not that well documented (in English). The ...
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1answer
145 views

How to setup the NCV7708B h-bridge/double hex driver?

I am working on a circuit to control an electromechanical display and settled on the NCV7708B Double Hex Driver (datasheet). I created a minimal setup on breadboard in order to test the chip: I ...
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40 views

Turn on darlington(s) with 3V MCU

My goal is to get a 3.3V MCU (probably a ESP32) to drive this circuit. It is driven with a square wave from 15 to 40 Hz where the pulse width itself of 2.5 to 13 msec. When searching for answers, the ...
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19 views

ATSAM / ASF4 - how to use HRI driver

While trying to change the analog reference voltage in ATMEL Studio for ATSAMC21 I found no way to configure this in ATMEL start and in the higher level drivers. So I searched around the ASF a bit ...
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2answers
32 views

Should an NCP3420 Draw Minimal Current with Only VCC and GND

I am trying to make a Buck Driver (More Info). While Building up the circuit and testing it seems to draw too much current. The NCP3420 was getting warm. NCP3420 Datasheet After Removing it and only ...
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1answer
62 views

IGBT gate driver burned, why?

I am trying to use an IGBT module (dual IGBTs in common-emitter arrangement) as a static switch for 120VAC. I've done as much reading as I can, and I understand there are issues with losses and turn-...
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1answer
39 views

Unable to drive MCU pin high

I'm trying to drive a MCU input with a RS-485 driver chip, specifically the SP3485 on the SparkFun RS-485 transceiver breakout. When I connect the MCU pin directly to the 3.3V power rail, the pin ...
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52 views

Methods for increasing output power and efficiency of a ZVS flyback driver

I have built the following ZVS driver: I am using this circuit at a resonance frequency of 150kHz. My hope is to be able to modify this circuit for wireless power transmission. With that being said, ...
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1answer
55 views

Buffer / Line driver ; 3 state IC Working

I am just curious to understanding the working of this - Buffer IC (Part Number - 74AHC1G126) My questions : I figured out that this IC does not act as a level translator which changes the voltages ...
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2answers
69 views

Are ultrasonic Tx/Rx pairs really just the same sensor?

I want to retool the classic HC SR04 rangefinder to be able to do ToF gas flow sensing. I need to be able to do ToF on a column of air in both directions, so it benefits me to be able to use the ...
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1answer
86 views

Modify generic chinese LED driver circuit

I have a lot of LED flashlights and lanterns from China that use a simple IC as their driver to get these different light modes. For instance I have this small keyfob lamp that lights in the following ...
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4answers
64 views

LED DRIVER: Buck Converters output current ripple

I need to design a led driver of up to 1A, to drive some infrared and near infrared LEDs. Due to the nature of my application, the intensity of the light should be as stable as possible, as ...
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1answer
75 views

Which stepper motor should be enough to move a water valve and for the TMC2130 driver?

I need a stepper motor and a driver to control it. But I don't know which would meet my needs. I have an Arduino MEGA 2560 if that's relevant. Aim I need to close and open a Nupro valve with ...
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1answer
17 views

Access device commands on Lenze 9400 Highline driver via Twincat3

I want to access the device commands on a Lenze 9400 Highline driver via CANoverEthercat(Twincat3). Is that possible and how can I do it? Specifically, I want to access the Device command 51: Identify ...
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2answers
127 views

Power BJT Transistor in motor driver keeps burning

The power transistor 2N3055 keep getting damaged after connected for a couple seconds to this circuit. I would like to know what could be the cause. I soldered this circuit for a 6-wire stepper motor ...
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41 views

Someone has a circuit for a isolated driver (both input and output) to my project?

I'm working on a self-oscillator Buck converter. My simulation on PSIM has a perfect output, as you can see. But I need a more realistic simulation on another software (with Spice models), so I need a ...
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1answer
58 views

Driving car electrical vacuum pump

I am trying to drive an electrical vacuum pump from a car directly from 12 VDC. Earlier, I succeeded with a different pump just by connecting them to DC power, the other pump (different brand) used ...
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67 views

Change current in steps for pulsed LEDs

I want to control the power consumption and intensity of a IR LED which is fed by a 38kHz signal. Can I add mosfets in series with different resistors (25/250) like in my schematic? Application is a ...
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62 views

VDS Fault on A4964 BLDC motor Driver

I am actually designing a BLDC motor control unit with the A4964 Driver. I made the design for working on 24V supply. I did severals test and HW/SW modification but unfortunaly, the motor won't run ...
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63 views

3-phase inverter - component selection / calculation help

Yes, this is a component selection / calculation topic, it can be considered an "ask". Considering my current schematic and the following parameters: supply = 100~240 VAC (nominal 220VAC and 127VAC ...
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26 views

UART communication with a Thorlabs chip

I am trying to configure a Thorlabs temperature driver (MTD415TE), using a UART-USB connection. For this, I am using a Foca v2.2 with a FT232R USB-UART cable. I am using serial terminals such as ...
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2answers
123 views

Best method to drive SPI over 1 m

In my current project I need to control 8 analog multiplier. They are controlled with SPI but without the MISO line, so I would need to route : SCK MOSI 8 slaves selects So 10 signals in total. The ...
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109 views

Sine Inverter MOSFET Driving Problem

Hello Electronics Gurus and Experts. I'm trying to build a sine wave inverter using PIC micro controller However I'm not able to drive the power MOSFET. After some research on internet i found that ...
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2answers
71 views

What's the maximum current at every output of this driver?

I'm using the driver DS26LV31T and need to know what is the maximum output current for the output pins (P,N, for example pins 2,3). I'm confused because I'm not sure where to take that information ...
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59 views

Do I need a laser diode driver for this? (noobegginner)

I have a blue laser diode, with max specs of: 2.4w 2.2A 5.2V Currently, im using a ion power bank with a skinned usb wire to power it. The maximum current I measured from it is only 1.4A, and voltage ...
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1answer
54 views

Should bus transceivers be used for a legacy M68SEC000?

I'm working on designing a simple "retro computer" based on the NXP 68SEC000. The "SEC" variant (by NXP) is essentially a Motorola 68000 with a few differences. ...
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2answers
149 views

Opto Triac driver (moc3051) basic circuit problem

I wanted to try the basic circuit of MOC3051 which is a random phase optoisolator triac driver. I used this circuit from the datasheet: with following parameters: Vcc : 3.3v Transistor : BD139 ...
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1answer
52 views

Capacitor to discharge upon switch open

Update Please evaluate this third attempt: This is my first electrical project, so please be gentle with me. I know very little about electronics. I'm building a machine that has a crank that users ...
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1answer
65 views

LED Driver with minimum input current and large LED current(peak)

I am designing a LED driver. Power source - 18V-42V (I can draw max of 6mA-7mA from source) LED string - 4 series LEDs of 6 strings in parallel ( total 24 LEDs) I need min of 200mA of peak/...
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2answers
120 views

BLDC Motor PWM commutation scheme

Actually I'm trying to understand how to control a BLDC motor using trapezoidal method. I've found two illustrative images that show how to PWM each motor phase: First Second In both of this images,...
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134 views

IR2110 MOSFET drivers burning

I am currently building an H-bridge for my Tesla coil with this video as reference: H bridge. The only thing I changed was that I swapped the pull-up to pull-down resistors and I am using IRFZ44N and ...
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75 views

1EDN7512B MOSFET driver not working

I am facing some difficulty getting a 1EDN7512B driver from Infineon to trigger at all. The following is one of the simple test circuits I quickly threw on a breadboard to test, with no success. I am ...

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