Questions tagged [electronics]
The electronics tag has no usage guidance.
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Antennas for HF reception
I need to know a few things about using HF antennas with RTl SDR.
Whether it's a dipole or a monopole antenna, how do I choose the wavelength for the HF antenna? The range is from 3 MHz to 30 MHz. To ...
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Would this be a suitable setup or there are better ideas to build the drone power supply?
I am building a tethered drone used in washing houses and solar panels, most important aspect being the overall drone system weight.
The overall use would be washing up to 15M high with a drone (...
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Error code in the automatic door system
The automatic door lock system malfunctioned due to an electrical surge. Currently, the door is closed but the screen shows the door open. We opened the door by pulling the motor handle and putting ...
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Very slow Slew Rate after an 8V regulator
I have a requirement to provide a regulated 8V supply to power a FET. The regulated 8V is supplied from a DC bench power supply and needs to have a very slow slew rate to replicate someone turning the ...
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Single Photon/Electron Emitter
Is it possible to buy single photon/electron emitter in market for experimental purposes? If yes, can you please guide me where and how?
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Activate a mechanical end-stop with a lever
I would like to be able to record the motion of the shafts on a loom. I have some mechanical end-stops, and would like to trigger them with levers that raise and lower when the treadles at the base of ...
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Failed in upload firmware to esp32
I'm having an issue when uploading code to my ESP32. Previously, I had configured the partition scheme to 'minimal,' and I was able to upload code without any problems. However, after I fixed my ...
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Left Aligned Binary Data
I have to write 0xA5 to the DAC. So should I send 0x00100A50 or 0x001A5000?
The command bits are 0x0 as i just want to write to the buffers. Say I want to send to channel 1 with channel Address 1 (D23 ...
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Should I put the peltier module at the bottom of the aluminum block?
I'm new to this project. We have an ice chest with a cooling and warming system attached on its lid. The switches etc. were corroded because the lid is very old. It has been sitting around for years ...
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What does 12CC refer to when talking about voltage?
Is it 12V with a connector?
For example in the data sheet here: https://www.hydraulicmegastore.com/product/vcf12nc12cc/
Is this related in any way? (A DMP-12CC connector cable)
https://www.monacor.com/...
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Tunable phase delay for RF modulation
I've been trying to understand if there's a way to create two RF signals at the same frequency with a fixed, tunable phase delay. The goal is for one to trigger an RF-modulated laser and the other an ...
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Converting RMS to Maximum Power
If I have a sinusoidal voltage signal of amplitude $V_m$ driving a resistance $R$, what is the relationship between the RMS power $P_{rms}$ and the maximum power $P_{max}$ delivered to the resistance?
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What is the actual detection range of AMG8833 thermal imager sensor?
I am using AMG8833 thermal imager sensor for my project. I have read in datasheet that its field of view is 60 degrees and it can detect source till distance of 7 meters.
But I want to know what is ...
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How to use a high current 2 Second current pulse to actuate a servo - First year Electrical Engineer
I am using a dual deployment system controller, an Eggtimer Quark REVC2 which at apogee outputs a high current 2 second pulse. I don't have time to buy a more advanced Eggtimer which outputs proper ...
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Solving a common emitter amplifier problem
My work is posted along with the question. I received help in office hours and this small signal equivalent was derived. I was told to use the formulas in the pictures to derive the voltage gain and ...
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Is it safe to leave a power bank connected all day to a 10 W solar panel (so with varying voltage and current)?
I have a 10W Solar panel with 5V USB output and a few power banks (the one I'm willing to risk for now is an older Li-ion one rated 3.7V/6000 mAh/22.2 Wh with microUSB-in 5V 1.9A max).
My question is ...
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what is the problem with j1000 drive?
I have problem in the drive-J1000, not running , shows F 9.50 on display , just twinkling here is a video
https://drive.google.com/file/d/1JasqdFWffqOWf1wKko-XR6xYs1OKAzdu/view?usp=sharing
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How to send a TTL trigger signal remotely
Sorry if this is a dumb question, but I am an undergrad intern working on a semi-independent project in a lab, and no one here can really help me with this.
I am trying to control a lab instrument ...
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What are the differences between a standing wave ratio meter and a frequency counter?
Im having a hard time understanding what the differences are, I see things on google saying they are both at once and I am really confused.
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Motor that plugs directly into wall outlet
I am looking to drive a disk at relatively low speeds (9rpm) and somewhat high torque (not sure on exact numbers, 100+ in-lb.) I am looking for a motor that can plug directly into the wall and just ...
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Control Systems: 3rd order system project [duplicate]
I'm in need of help finding a third-order or higher system in which I can derive a transfer function. We have a class project in which we need to find a real-life example of the system that equates to ...
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Generation of Electrostatic induction
I need to generate a 500 volt electrostatic charge. How can I do this? I don't have a Van de Graaff generator. What are some practical suggestions?
Basically I want to do experiment in which I need to ...
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How do solenoids work to push and pull?
okay so I’m curious please about how I could use two solenoids to effectively move back and forward when I give them power with on/off switch please?
I’m creating a tennis ball launcher with my ...
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Please help me draw a simplified small signal model for this circuit
I have an assignment that requires me to design a multistage amplifier with a minimum gain of 35 db and a load of 8 ohm. This circuit meets those conditions but I'm not sure on how to draw the small ...
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Voltage drop on amplifier signal after LED switches on
Circuit above shows my design for amplifying PIR sensor signal, which I then feed to Arduino and based off this signal I switch a LED on.
Both, the LED and PIR sensor, are on the same voltage rail (9V)...
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How to Supply two different DC voltages using High Current
I'm trying to function a 12V stepper motor(>2.5A) and five 6V servos(>3A). Are there any reliable circuits that can output both these voltages and a high output current since there will be some ...
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Is fiber to computer(without the use of LAN cables in between) possible?? Are any further developments getting carried out towards this goal?
All of us know well that the fiber to home(FTTH) connections are a trend nowadays. Every nation is planning to replace the existing metal wires with optical fiber cables. But we also see that the ...
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212
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What does summation EVEN and summation ODD exactly mean in truth table of IC 74180 which is used as a parity generator and parity checker?
I was trying to implement parity generator for 8 bit message using IC 74180. I understand the purpose of all the pins but don't what do those two output pins namely summation(Even) and summation(odd) ...
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How to make a 3-bit full adder using only half adders [closed]
I've been trying to solve this question but I don't know the right answer.
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Control torque/rpm impact driver Milwaukee M18 CBLID
First off I want to say that I'm a beginner in electronics so I may be wrong in any of my statements.
So, I got this Milwaukee M18 CBLID impact driver and I was thinking on updating to the new fuel ...
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Why wouldn't grounding before a load in DC circuitry affect it? [duplicate]
Considering that the ground is a a real and connected to earth ground, if the electrons have a low resistance path to it from the negative pole, why would the circuity still work? Maybe you could ...
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Electrical potential and grounding in a circuity, why it works?
I thought I understood the ground concept but now I'm a lot confused.
From: Pg.67 Practical Electronics for Inventors - Scherz Paul
As it's explained in the book, the first circuity is the one that's ...
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Problem with relationship between shunt resistance and grain boundaries in a solar cell [closed]
Here is the correct answer from another stack website.
The higher shunt resistance means that higher the
polycrystalline lattice irregularity and many grain boundaries. This
means higher current ...
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USB sound on PC when plugging laptop charger into the socket [closed]
Sometimes I hear my PC making the USB - connected device sound when I plug in my laptop charger into the socket.
By USB connected device I mean the sound that it usually makes when I connect something ...
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Power Electronics Project
Can I use 220-12v,1.5 Amps Stepdown transformer along with 12V 2A (KBP200) bridge rectifier to build a charger for 12v, 7.5AH battery or I should use transformer with Higher output, maybe 15V
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Mecanum wheels begin to make robot spin around rather than move to the side
I am using mecanum wheels to steer my robot which I am programming using an arduino. The main problem that I am having is that whenever I attempt to make the robot move sideways like this:
Instead ...
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How to analyse an electronic circuit in a more intuitive way?
I want to understand how to analyse complex circuits (for example with diodes, transistors, amplifiers...etc) in a more intuitive way. My question is not about application of the basic principles of ...
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Unknown circuit component with glass encapsulated contacts
This is an unsoldered circuit component that had two metal pieces that weren't making contact inside a thin glass tube. What is this? I haven't seen anything like it before.
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Simulation of RC circuit using Proteus
I am learning how to use Proteus and I have come across the charging and discharging of a capacitor problem. My main problem is on how to use the graph feature of Proteus to simulate how the voltage ...
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How is the YAW angle calculated by an IMU sensor?
Say a body rotates by 90 degrees, then the yaw angle will be 90 which can be calculated using the data provided by IMU.
Now from that point, the body traverses some distance and is again rotated by 90 ...
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How do I reduce the mains spike in a switched mode PSU?
I have a switched-mode PSU for a gaming laptop.
It has a bad habit of burning out the switches on mains extension panels when I turn it on (two in the last four days).
The turn-on surge is always ...
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Advice wanted on time to digital converters for speed of sound in fluids
I'm using the speed of sound to analyze the composition of aqueous solutions with sound velocities between around 1000 and 1400 meters per second. It's a process control application with continuous ...
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2
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What is the function of jumper pins on a 4 channel relay?
Attached is a picture of a 4 channel relay. I have searched the internet for the function of the jumpers circled in red. They are labelled Low Com and High. On all sites which I have looked at they ...
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How to control the current while using "DC-DC XL6009 Adjustable Boost Step-up Power Converter Module Replace LM2577" in a circuit?
I want to power my WiFi modem with my powerbank and the modem's requirements is DC 12V-1A. But my Powerbank has DC 5V-2A that is why I will use a step up converter but how about the Amperes, how can I ...
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How can I get more power out from a windmill motor?
As far my knowledge a dynamo is a motor which provides electricity when the rotor shaft is rotated. My Question to be brief is if I connect multiple dynamos in a single shaft will I get more current? ...
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507
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Pspice ac sweep problem
I want to run an AC sweep from 1 Hz - 10 MHz and calculate the output of the circuit (the voltage on RL), however spice shows that my voltage is 0 in a lot of parts that it shouldn't. I believe the ...
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Emulate normally closed relay with 2 normally open relays
Good afternoon, I have recently ordered a normally closed relay to fix on my car's daylight-running lights. When the main lights come on the DLR should switch-off. Unfortunately amazon has delivered ...
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(Mechanics/Electronics) Anybody know DTC code for asking Air flow measurement on OBD2?
(Sorry if there's a better place for this. It's my first question)
I'm doing a final work for a Bachelor in Electronics and my work consists in making a fuel meter for a car. Its connected via OBD2 ...
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Is it still a bad idea to keep modern electronics plugged into the charger cable for longer than necessary?
I have an "DaVinci IQ" portable vaporizer. Since the battery quickly runs out of power, I often keep it lying next to me, plugging from the computer into its USB-to-Mini-USB (or maybe it's Micro-USB --...
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What's the function of those coils there?
What do they do?
The aux contacts are normally open and the device is MR PQM 500 reactive power compensation system.
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