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

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29 views

Wiring of 0-10V LED Dimmers

I will be installing (well, my electrician will) LED lights at home with these specifications ...
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36 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 ...
2
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2answers
148 views

Understanding this LM317 LED Driver circuit

I came across this simple LED Driver circuit ( I am aware of the power losses but just wanted to understand its working) . Now in a Voltage regulator configuration , ADJ is connected to a voltage ...
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1answer
14 views

Bldc motor driver compability

I looking for a drive for my sensorless bldc motor for a project of mine. 1)Will I be able to drive my motor with ESC(electronic speed controllers) used to RC hobbyist powered by Smps. 2)what are ...
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0answers
32 views

Trouble splitting off LFO signal to drive LED

Background: I am trying to build a very simple noise box that doesn't need to be tuned to 1V/Oct or anything special. It simply has one VCO, two LFOs, and a VCA. The circuit is powered off of a dual ...
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1answer
26 views

What kind of driver should I implement in buck convertors

I have a couple of questions. In the diagram below, when the current falls to 0 , the NMOS is supposed to turn off. Similarly when the voltage error increase the PMOS turns off. However in the diagram ...
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1answer
40 views

step down switching frequency

If I have a power supply that outputs 32V,7A and I need to power an LED that requires 24V-2.8A, can i use this step-down module to power up the LED? ...
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1answer
15 views

TLC5916-Q1 LED Driver Serial interface

I am planning to use TLC5916-Q1 LED Driver for switching of 8 different color led's and in application,switching takes place at fast rate. Datasheet: http://www.ti.com/product/TLC5916-Q1 For ...
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1answer
44 views

Best way to regulate high voltage

I am currently working on a motor driver that should operate on 100V or higher voltages. I need to implement logic there with 3.3V. I could provide additional, low voltage source but that would give ...
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49 views

Would this power supply work for this config?

I have looked around on the forum but could not find an answer specific to this issue. I have 8 parallel LED strips, each works at 30-33V and requires a constant current of 0.7A. I have a power ...
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52 views

200W LED Driver [closed]

I need to power up an LED system that requires between 32V and 36V at 4.9A I am having hard time to find the proper driver to lit up this system. The ideal would be a driver that allows for dimming ...
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1answer
41 views

Brightness control with PWM dimming LED driver LM3406/06HV

I have an changing input voltage. I would like to feed it into LM3406 and have varying brightness from the Led. So I go through the datasheet. However,the only information and characteristic of the ...
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23 views

PL2303 Driver (Code 10) on Win 8.1 [migrated]

I'm trying to get a PL2303 driver working on a Win 8.1 Apparently there's already a fix in which I should install the 2008 version of the driver. I've done that, but still the driver still gives out ...
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40 views

Battery powering two LED's with a led driver

Currently I am working on an application that is battery powered. I have two reflective sensors (RPR220 and RPR220-PC30N) which I am comparing to eachother. As a power supply I use 4 AA none ...
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0answers
28 views

GPU ISSUE! PLEASE HELP? [migrated]

Usually games on my PC work perfectly, however after updating all the pc drivers including (Intel(R) Hd graphics) games won't work properly, they are slow and graphics are low, I have an example! here ...
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1answer
47 views

CXA1512 LED CC/CV driver design?

Any help would be appreciated as I am new to LED drivers. I have a very basic understanding of electronics and I'm not up to designing my own driver yet. I have tried to power this LED with a ...
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1answer
109 views

Make an opamp go rail-to-rail on a voltage higher than opamp supply

So I've chosen to work with an High Frequency Opamp that can only use 5V for power (I can't use any other Opamp). But I need the signals to go Rail-to-rail at say, 24V. So naturally I thought I'd just ...
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0answers
29 views

Laser diode driver at high currents

I have a fiber array package laser diode which draws 30A at 2.8V. I would like to use it in a laser cutter project, but I don't know how to go about designing a power supply for it. I came up with ...
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0answers
7 views

programming attiny88 & attiny828 with arduino [migrated]

I found some information that the attiny88 and attiny828 can be programed from an arduino, similar to the programing of the attiny85/45, simply connecting the right pins. How to program Atmel ATtiny88 ...
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2answers
67 views

determine necessary current to drive a stepper motor?

I am trying to drive a stepper motor. It is a 12V unipolar motor. But it is not moving. I tried with L293D , ULN2003 etc. I think it is not getting sufficient current. But how do I determine how much ...
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1answer
38 views

Are drivers and libraries the same?

Can driver for some device (for example LCD display), also be called library (a set of functions for work with)? If not what is the difference, and what term is used for what?
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34 views

PIC 18F23k20 as LCD driver

I was asked to devise an LCD driver using a PIC18f. Here's some information on what I'm using. PIC 18f23k20 LCD-S401M16KR-81359 It's a 1/3 bias 4 common multiplexed 7-segment display. I have the ...
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1answer
43 views

h drive for stepper motor

I am having a problem trying to find the right h-drive for my nema stepper motor. It's rated for 3.08V and 2.8amps. Unfortunately, I can't find an H-drive that will accommodate. They are either too ...
3
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1answer
106 views

How do I find out which current/voltage to use for an unlabelled LED panel?

I have a 600mm x 600mm LED panel with 576pcs 3014-type SMD LEDs in some unknown configuration/topology (edge-lit, similar to this one here: ...
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1answer
107 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 ...
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1answer
57 views

Help me clarify this really unclear diagram?

5.2 Reduce control IC exposure 2a. Connect VS and COM as shown in Figure 6. http://www.irf.com/technical-info/appnotes/an-978.pdf (H-bridge application notes) Do they want me to connect ...
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2answers
65 views

High power led driver for COB leds

I bought some chinese COB 100W Led lamps from Ebay and I was wondering what would be the most efficient way to power them. Led specifications: 24vDC 4.2A I want to use 4 leds in total, so that makes ...
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3answers
402 views

Light LED light?

I would like to mount 10 or 20 white LED on a thin rod, about 2 m long - and around 3 mm in diameter. I will need to accept various compromises for conflicting requirements, but I try to understand ...
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1answer
87 views

why my LEDs burned with the right driver?

I am trying to connect, in parallel, 18 LEDs that have these specs: LED size: 10mm; Voltage: 3.2V - 3.4V; Current: 20mA. Driver Type/Model: MeanWell LPC-20-350 (datasheet: ...
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1answer
91 views

Arduino LED Cube 8x8x8 with a Led Driver (TLC5940NT )

Me and a group of friends need to make a college project and decided to do a LED cube that can graph mathematical functions. We do not know how to code very well, and are very new to Electrical ...
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2answers
35 views

Hi Drive MOSFET waveform for charge controller

I have designed a charge controller using the BQ24650 IC from Texas Instruments. Although I am outputting the correct voltage, the hi drive waveform is not the square-shaped waveform I was expecting. ...
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1answer
65 views

Drive 8 Stepper motor simultaneous with different motion?

I have the need to drive 8 stepper motor together and with different motion behavior for each. Could I just get away with 8 stepper control board (easy driver) + an Arduino with enough pin to get the ...
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1answer
24 views

Loading new drivers

Suppose I'd like to make changes to the drivers of ADXL345 for SPI by building on https://github.com/analogdevicesinc/no-OS/tree/master/drivers/ADXL345 How should the updated drivers be loaded? Should ...
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3answers
102 views

Op-Amp based guitar direct box

I successfully built an active DI box using this circuit (image posted below), everything went fine and I'm happy of the result. Parts List ...
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1answer
154 views

BLDC motor waveforms

I'm trying to drive a brushless motor (BLDC) with an ATMEGA328p I use Timer0/1/2 to generate 3 different PWMs @ 62Khz. First I tried (only absolute values) $$A = \sin(T)$$ $$B = \sin\left(T + ...
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2answers
89 views

Led's in series light power degradation with strange results

I am doing life cycle test for 7 led's connected in series with current limiting resistor.(picture for reference) I am measuring light power(mW) with Thorlabs photo resistor for each led. Led's ...
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1answer
64 views

Transistor based relay driver for DC motor is not working with 12V-8A DC motor?

I am trying to run a 12V-8A DC motor from pic microcontroller output pin via relays(28V-30A output rating). It only starts for a split second and stops. Where as small DC motor runs perfectly on the ...
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1answer
67 views

Why is this a bad MOSFET/Driver for a Tesla Coil, what does one look for in a good one?

MOSFET: http://ixdev.ixys.com/DataSheet/99175.pdf Driver: http://www.irf.com/product-info/datasheets/data/ir2183.pdf What factors should one consider in selecting a good MOSFET/Driver combo, and ...
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25 views

H-Bridge driver misfiring and referenced to >VCOM?

Circuit below. Circuit is a full-bridge with IR2183 drivers being operated at 12V. Measurements were taken with reference to GND at JC2. Hey, take a look at this stuff, HIGH SIDE IN RED, LOW SIDE IN ...
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1answer
90 views

Drive stepper motor with audio amplifier?

I am as a beginner in electronics contemplating how to build a motor driver for a stepper motor. From what I have read, the more sophisticated drivers will have a feature known as micro stepping ...
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0answers
93 views

looking for 300mA cree led driver circuit

I need help or need basic circuit of cree LED driver with the following info: Voltage input: 12v Output : 3.3v at 300mA Thanks for any help.
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3answers
65 views

IR LED for night vision LED driver necessary?

I am working on a project that requires a night vision camera. I have a small camera placed on the PCB and 4 IR LEDs placed around it to illuminate the dark room. The rooms are about 20-30qm. I have ...
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0answers
27 views

Triggering Problem in 100W LED driver

Why a triggering problem, 100 Watt Driver(volts @ 3ampers), instantly it switches On, but once it is off again it wont switch on.Why does this happens in a led driver. Is this due to capacitors ...
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1answer
134 views

Help with building a 3 Phase DC Motor Controller

I'm looking to design the power stage of a 3 Phase DC Motor Controller for use with the Emrax 268 motor. The maximum input battery voltage would be no higher than 300VDC and the maximum continuous ...
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1answer
60 views

5v dc drops to 2v when applied to L293d [duplicate]

I have a 5v dc supply generated from voltage divider and this 5v is used to drive L293d. But the problem is as soon as 5v supply is given to L293d the voltage drops to less than 2v. what could be ...
0
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1answer
68 views

Fail Safe for circuit, when input is removed

I have built a circuit which inverts the signal of a ULN2003A, it is in turn connected to a relay. It is possible for the ULN2003A output to be disconnected from the external circuit as it is remote ...
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1answer
115 views

Buck converter not working

I designed a buck converter on breadboard as shown in the picture. I am applying PWM from my microcontroller. I am not sure why this circuit is not working, I have spent so much time on it. Is there ...
2
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2answers
79 views

Inrush Current Booster

I probably need help more with terminology (and thus, how to find the answer that already exists) than with technology. My current hobby project is a low-power device — max current is 100mA at 5V* — ...
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1answer
57 views

Zener diode in stepper motor driver with TPL7407L

In TPL7407L's datasheet, there is a stepper motor driver schematic as below There is a zener diode denoted as "optional". However the 'COM' pin is connected to 'VSUP' directly. The 'optional' means ...
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64 views

driver for 3 x 30 watt leds in series

I am trying to build a lamp using 3 x 30 watt led, a heatsink and hook them up in series to a driver. I have 220 volts outlet (Europe). I am a newbie in electronics Can someone help me choose a right ...