Questions tagged [electronics]

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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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1 answer
106 views

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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I'm getting an Incorrect Plot for a Diode Curve

I am trying to build the following simple diode curve tracer: Here are the parameters of the setup: R1=R2= 1kΩ R3=R4= 5kΩ Vfg: F= 100Hz VPP = 16 Opamp 1 &2 = UA741 DUT = 1N4007 *Oscilloscope = ...
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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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1 answer
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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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1 answer
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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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1 answer
55 views

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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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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1 vote
1 answer
31 views

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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1 answer
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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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2 votes
1 answer
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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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2 votes
1 answer
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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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1 vote
2 answers
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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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1 answer
60 views

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 answers
154 views

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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1 vote
1 answer
51 views

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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1 answer
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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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1 answer
236 views

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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1 answer
28 views

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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1 vote
1 answer
60 views

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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1 vote
1 answer
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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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2 votes
2 answers
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Embedded C Programming

I am currently a project intern, working on Light Fidelity (Li-Fi). Most part of the project deals with development of software for Renesas Micro controller. I have a simple doubt regarding timer and ...
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How to add external sensor data to pictures, canon DSLR, hot shoe, electronics

Here's a challenge - I am trying to add different sensors data (height,temperature,distance by laser) to pictures i take with a canon DSLR camera. Would it be possible to connect different sensors ...
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1 vote
2 answers
435 views

PC Controllable DC Power supply (0-30V)

I have a Proportional solenoid valve that uses a 0-30VDC for control (opening the orifice) I only have capability to provide 0-5V or 0-10V. I need to control the valve using my PC. Is there any DC ...
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Identify electronics connector from pinout

Is it possible to identify an electronics connector with the pinout diagram? For instance, this diagram shows an 18+2 pin configuration along with a key slot of some type at the top. The diagram ...
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