All Questions

I have a stepper motor driver with input voltage(24-50 V DC) .can I use 12 DC ? what effect will under powering the motor stepper driver have? NOTE: i have stepper motor with 45 kg.cm .in practice, i ...

Good morning, I know that modicon m258 plc is programmed with somachine. But it's a licenced software. So can I programme the modicon m258 with codesys

I have been trying to get the USART RX interrupt trigger working on my ATmega168A using the tutorial here (updating my registers as per the datasheet): Tutorials I have setup the system to use a ...

I'm designing a circuit with an LM3914 dot/bar display driver and want to shut off the entire bank of LEDs based on conditions in the circuit. I'm having some difficulty turning off the driver from ...

I'm basically trying to understand how this Dc to Dc step-up converter work. please help me.[![dc-dc step-up voltage converter 1v-9v][2]][2] I need to design a DC DC step up converter using bjts. ...

i have breadboarded a TDA2050 amplifier, using this schematic i get good sound intensity with a half acceptable quality. the down side is the constant noise and humming. i have found a possible ...

The copper's outerlayer is oxidized and the flux's job is to remove it and the impurities. But what type of chemical allows the oxidation on the copper to be removed? How does the flux remove the ...

I am currently investigating a malfuction on 12V small electric motor. it is performed torque vs. current measurements on a group of samples and some of them are showing non-linear current i.e ...

I'd like to build a queue of three internal bits as inexpensively as possible. Externally, the queue has two input bits and one output bit. The inputs are (dataIn) and (shift), and the output is (...

So I was told this is from a welder but I would like to us it for fractial wood burning but I cannot figure out what kind of transformer it is and how to do it, all the videos use microwave ...

Hi, my question is regarding the equation circled in red in the highlighted text above. I can't seem to understand the reasoning behind why all the transistors are included in that equation. My ...

I am a bit confused on a few things regarding photodiodes. Here are two circuits that I am referring to: or   For the second circuit the capacitor is not of importance. Here are my fundamental ...

I got from a website some gerber files, I tried to have them printed, but they told me that the format is not supported and I need to convert to RS-274X. I've tried using gerbv to open the gerbers ...

Im trying to simulate a buck converter done in class to see if this fits what the theory says it would be, It must receive 110 V and send to the load around 60V and 20 A, the circuit is: And with ...

At this point, most of the people on this site who live in America know that the voltage of common power circuits is around 120 volts. My question relates to the use of voltage dividers in a circuit. ...

I have observed that some PIC32MX micro-controllers have an inbuilt RTCC peripherial. The first feeling i had when i saw this was joy, as it meant i could eliminate a component of my PCB. However ...

Bit of an unorthodox question I'm sure, but I'm making a balance beam (two rotors on either end of a see saw) with proportional control, and I can't seem to get it to balance at 0. The proportional ...

I have a basic multi-meter that I am using to measure amp on a load. I am trying to figure out how much amps my small entertainment system draws. (LCD TV, PC, speakers.) I want to build a small DC ...

OK, so thanks in advance because I am new here. I am reading the AD57XX drivers here https://wiki.analog.com/resources/tools-software/uc-drivers/renesas/ad5780 and am struggling to understand how to ...

I have come up with a bridgeless active pfc circuit. Does this arrangement make sense? When M1 and M2 are on, the inductor current ramps up until M1 and M2 are turned off. No current flows through ...

I want to connect four 6-wire load cells (Tedea Huntleigh Compression & Tension Load Cell 300kg, 15V dc, IP67, product page and datasheet) into an Arduino or Raspberry Pi and get four independent ...

I wanted to make use of a single port RAM to be a single clock FIFO in verilog for an asic project , due to some constraints i can not use the dual port RAM. My confusion is when I have to perform ...

Exploring some fab houses and I came across this statement from https://www.viapart.com/PCB/Explain "Minimum slot aperture Mechanical drill 0.6mm The tolerance of groove aperture is±0.1mm" Does ...

I have a board with two LTM8073 "silent switcher µModule regulators" by Analog Devices/Linear Technology being used to provide two separate power supplies. This is a 10-layer dual-sided board that was ...

I need a switch to allow current to pass through a wire to Joule heat it. This is a nickel-titanium wire (Shape Memory Alloy, SMA) which has been programmed to bend into a particular shape when heated....

What is the easiest way to make a device that can control GPIO pins using USB? Can I make a device similar to this on my own without any special hardware?

I am currently designing an electromagnetic accelerator meant to accelerate a spherical nickel-plated NdFeB (neodymium) projectile along a circular tube, in a similar manner to a particle accelerator. ...

I am trying to understand the Holand circuit.But how is the following equation formed .Isnt it should be(vi-vo)/R

I've created a board using the STM32F405R6T6. I am experiencing some problems: after I program the firmware onto the microcontroller, withdraw the power and reinsert, the firmware only starts to run ...

I have a 220nF capacitor in a series with my surge protection circuit. As can be seen from my spice simulation, the capacitor gets a surge of current passing through it under fault conditions, and ...

What can I do to eliminate the output voltage when there is no load on my circuit, even if there is any level on V2? I have do develop a current source that doesn't provide output when no load. Thanks

Below illustrates a LP filter bands: I can say that the transition band starts at -3dB. But the transition band ends at some point and there the stop band starts. In this example it is -70dB they ...

I am interested in measuring a small \$d\$ between two objects shown below by measuring the capacitance between the Terminals denoted as T0 and T1: The distance \$d\$ is roughly 1mm +/- 0.5mm ...

We have 3 chargers for DC power supplies (125VDC battery banks) at our facility and had a contractor come in and test them. They said there is a 'ground fault' on 2 of them in their report. The only ...

I need to send data from one PIC to another PIC by using RS485. As a protocol I use UART. However, I cannot be sure about RS485 transceiver and its circuit. I will be able to supply 5 V and according ...

Does capacitance of pcb's copper used in conjunction with capacitance proximity sensor (analog) rises or lowers when the obstacle get closer?

I did search for TTGO and LoRA and found nothing on Google and Bing. I know it is related to Radio frequency but no documentation or website.

I am not an engineer, so apologies if this one is a bit of an ill-thought out... Can anyone show me an example of something like the following scenario: A small stepping motor driving rotation of a ...

I am looking for a connector to buy online as a replacement part, following the specifications: 18*3 pin, 2.54 mm spacing. I'd like to at least find an appropriate identification for this connector ...

I am trying to exercise the communication between AXI4 master and slaves over the Chip2Chip IP core. When I have a master in one design and the slaves in the other, everything works fine - I properly ...

I've had a very simple PCB designed to supply the ESP32 WROOM module with power using a voltage regulator that supplies it with 3.3V. However, this does not seem to be enough to run the firmware ...

I'm looking for a device whereby I can choose which socket the power is directed to (in a similar way to a KVM switch for computers sharing a single (K)eyboard (V)ideo Display and (M)ouse, but in my ...

Is it possible to strobe a 12v 50 watt flueorescent light bulb

MPU6050 datasheet says that maximum accelerometer data output is 1Khz, so in theory when measuring time it takes to receive 1000 data samples through I2C, so I should receive all data in no less than ...

I'm working on a project to determine the resistivity of 1,1,1,2-Tetrafluoroethane which is estimated to be around 10^14 ohm-cm. The problem is, the most sensitive commercial conductivity sensors for ...

I understand well that for commercial reasons and for making the flash memory faster in writing, the flash memory is written page by page. But why we must erase all over the block before writing to ...

I have problem with understanding and applying this recommended PCB layout to my design (image from datasheet, page 18): This is isolated RS485 transceiver with integrated isolated high frequency DC-...

I have a PCB with 5 TLC5940's daisy-chained. The first 4 work fine, but the fifth doesn't work. The LEDs connected to that one just go on at full brightness and that's it. When I measure the SOUT to ...

I bought one controller (PS3 QuickAct) from flea market guessing that it is bluetooth one, but turns out it requires USB receiver. I opened the controller and it have an transmitter module attached ...

from India. I am working on a project where multiple xbee s2c devices form a star network, i.e., 1 coordinator and 3 end devices. Each end device attached to the Arduino Uno, coordinator to the ...