Questions tagged [load]

An electrical load is an electrical component or portion of a circuit that consumes electric power. This is opposed to a power source, such as a battery or generator, which produces power.

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49 views

Connecting multiple loads to an extension cord

We have a garage at our house and whilst there is electricity going to it, it's basically just one outlet connected to our second fridge/freezer via a 15A extension cord. I was wondering if it would ...
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26 views

In a transformer, how do you determine where the induced EMFs (E) and voltages (V) are placed in a vector diagram?

I will be citing pictures from Electrical Technology by Theraja. So there are different cases with regards to the transformer depending on what losses and loads are considered. Each of them have ...
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49 views

Reason to connect a bidirectional tvs diode in paralell with a unidirectional one

I am designing my own high-side smart load switch for my power supply using TPS27SA08 ic. I decide to investigate how it works this evaluation board https://www.ti.com/lit/ug/slvubd4b/slvubd4b.pdf?ts=...
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22 views

how does power load sharing work when power supplies have different/variable capabilities/capacities?

I work with large networking gear fed by multiple AC->DC power supplies. One of the modules we use takes multiple AC inputs, when both inputs are active the module can supply 6KW of output DC ...
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1answer
53 views

LED Spotlight array issues

I am making a "lightbar" for my vehicle which consists of 7x 6" diameter spot lights linked together. The specs for each of the individual lights are below: LEDs: 14x 3w OSRAM Max ...
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1answer
36 views

Is a VL3030 a suitable replacement for a ML2430

Hi i am attempting to replace a battery in my electronic compass and im supposed to use an ML2430 however this is proving to be hard to get hold of and expensive. Im concidering using a VL 3032/HF5N ...
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22 views

Load/Shunt resistor value calculation for DC-DC Converters

I have DC-DC converter with rating -4KV and 1W. The unit supports current monitoring of output voltage. I would like to test the current monitoring using shunt resistor. What should be the rating of ...
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27 views

How to make a synchronous generator unstable

I was try to analyse what factors can affect the stability of synchronous generator . Let's say a synchronous generator working in isolation and some loads are connected to it and we have to make it ...
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2answers
32 views

Motor Mechanical Torque vs Motor Electrical Power

Let us say there is a constant load which is driven by a geared 3-phase ACIM (AC Induction Motor) of 5kW power rating. The mechanical load and its speed is constant. If I would need to replace this ...
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1answer
67 views

How bad is it to momentarily overload a transformer? [closed]

I have an espresso machine from the US running on a transformer in the UK. Inside the machine there is a grinder, a pump, and some heating elements. The machine is labeled 120VAC 1150W. I have it ...
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1answer
37 views

Steady State speed of rotor in following doubly excited system

I'm trying to analyse following system - A three phase armature winding on stator and on rotor field winding and both stator and rotor are cylindrical . And armature winding is connected to a three ...
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33 views

DC motor, confusion in specification about Current

So, I am trying to build a little robot mower, and getting all parts. So I recently buyed two DC 12V motors, here is the specs: Now I am trying to calculate how big or which battery should I use, and ...
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1answer
54 views

Is there a mathematical representation that represents the output voltage of a buck or boost converter in discontinuous mode?

Recently I have learned that in buck or boost converters, the output voltage depends only on the duty cycle and input voltage in continuous conduction mode or when current is continuous. However, in ...
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25 views

Naming the circuit of a PV-cell

I've recently been attending a solar-engineering module at university, however, I'm not on an engineering course so this module is completely new to me. This was shown on a lecture slide, however, the ...
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27 views

common circuit to turn on/off ac motor of 110V AC or 230V AC using MOC3041 and BTA16 Resistor calculation

I am building a common circuit to turn on/off ac motor of 110V AC or 230V AC using MOC3041 and BTA16. How do i calculate both resistor value R and Rg ( With Wattage ). For accurate control of TRIC. ...
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How does changing the inductance, capacitance and load in a buck or boost converter affect the circuit?

Before anyone calls me out, yes I am asking electronics related questions due to homework but honestly I am able to answer some of them. There are just some that I need StackExchange insights. For ...
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18 views

How to power multiple microprocessors and loads for a modular system on single bus?

I am considering high-level design choices to build a modular system. I want to make a single design of a microprocessor board that can be connected to identical copies of itself and share a single ...
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2answers
25 views

Measuring the capacity of a 40v lithium ion, lawnmower battery

I purchased a 40v Greenworks lawnmower battery, and it's listed capacity (6,000 mah) doesn't seem to be accurate based on what I'd expect to get out of it when mowing a lawn. How would you go about ...
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1answer
17 views

MDIO bus max fanout

I know that the maximum number of devices that can be connected via MDIO bus is 32. But how to determine the real maximum fanout of MDIO bus. I mean I have a PCB (6U size) that has AM335x SoC driving ...
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1answer
40 views

Best way to turn off P-FET with 3.3V available (P-FET Load Switch Application)?

honestly I'm drawing a blank. I am trying to turn on and off a load with a P-CH MOSFET. I used generic resistor values just to be clear. Now, in this example the VGS will clearly never go to 0. It ...
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0answers
47 views

How to connect a load to an amplifier without a loss in gain?

I have this circuit below, that represents a common emitter amplifier: When connecting a load of 10 ohms to the collector node and a signal to the base node there is a huge loss in the gain of the ...
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5answers
130 views

Current and voltage [closed]

Suppose a 100W load works on 100V with 1A current. Can the same load work on 1V and 100A current flowing through it? (Not considering circuit breakers).
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1answer
82 views

How does this under voltage lockout (UVLO) work?

In my project, I need an under voltage lockout (UVLO) to connect the load electronics to the energy-storage element via a power-gating transistor when the voltage across the supercapacitor exceeds ...
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1answer
80 views

Are there any “smart” fuse boxes? [closed]

I'm not sure I know the proper term or how it is in other parts of the world, so I'll just explain in detail: In my country every house has a "fuse box" - the electrical entry point to the ...
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Load sensor - to sense/track a ball movement

Wondering if anyone can give me some directional steer on a project I’m working on for Uni. In short, My team are working on a project where we want to track the movement of a croquet ball from one ...
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30 views

What breaker should I use to protect downstream?

I have a 16A supply connected to a junction box to split into a 16A feed and a 13A double socket. The issue is the 16A is connected to a load that will have high inrush current. I have protection for ...
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3answers
64 views

Distortion in output signal in amplifier after connecting load

I want to design an amplifier which works in 20kHz-100kHz range with 0.1V peak to peak signal. This is my circuit. It works fine in the simulation. It works fine without connecting R6 8 ohm load. But ...
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0answers
69 views

How to detect load is connected to a MOSFET?

How can I detect a load is connected to a MOSFET and report that back to the MCU? So the MOSFET can be ON or OFF, but I need to know in both situations if there's something connected or not. NOTE: if ...
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1answer
51 views

How does complex loading affect an op amp's power dissipation

I'm trying to calculate power dissipation in a complex load. I know that the power loss due to the resistive component is dissipated, and that the power loss due to the reactive component is canceled ...
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1answer
80 views

Gain with load or gain without load?

There is a problem I have been dealing with for hours. In my Electronic 1 lecture, small signal analysis was like this: The small signal equivalent of this circuit in my lecture notes was this: When ...
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2answers
71 views

How to find the load resistor's resistance?

Use max power transfer theorem to calculate the value of RL for the following circuit. I've done the Thevenin's equivalent circuit but from there I don't know how to find the \$R_{Load}\$. I need it ...
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1answer
39 views

Simulating RV32I ALU + load/store instructions using verilog

I'm writing a Verilog code to simulate RISC-V RV32I ALU and Load/Store instructions in Verilog. It contains of 5 parts: regfile.v- which contains the 32*32 registers required for RV32I, decoder.v- ...
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1answer
51 views

How much load DC motor can move? [closed]

with 1000 rpm how much load it can move on 12v? I want to no load of DC gear motor on 12v and 5v
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2answers
58 views

Gas discharge tube load type

I can not find any information about the type of load of neon lamps, for example neon probe or wall contact plug or extension cord with switch with small red lamp. I think this is a passive capacitive ...
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0answers
100 views

How to find the dynamic energy of a processor without using capacitive load?

I have the following question: A cell phone performs very different tasks, including streaming music, streaming video, and reading email. These tasks perform very different computing tasks. Battery ...
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1answer
51 views

What is the meaning of load of a line?

in Powerworld there is a function called ''line flow pie'' which indicate the percentage of load of the line. But what is it? I think that it is the ratio between the current on the line and its ...
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1answer
60 views

Is it ok to charge a battery with TP4056 while using it, if

Question Is it ok to charge a battery with TP4056 while using it, if the current consumption of the load isn't higher than the charging current of TP4056? and if not why? Trying: To have a 200mah Li-...
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0answers
75 views

Correct way to build a load lamp setup for circuit testing

I have a 3 way extension lead that I would like to use to stick it in the wall, put a load lamp (40W oven lamp) in series with it, and then use one of the prongs to insert my circuit under test. (the ...
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3answers
124 views

That Wall Warts Dilemma

I have a bunch of wall warts of widely varying DC output voltages. I find that they almost invariably show a no-load (or low-load) DC voltage considerably higher than their stated rating. I'm ...
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2answers
23 views

Test load capacity of cable & clips with only constant current/constant voltage power supply?

I want to test a 20m wire and soldered alligator clips on each end to see if it can carry the needed current I want to use it for (eg 5A.) Can I just hook it up to the terminals on my bench top (lab ...
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1answer
89 views

Shunt Burn Issue

I've this schematic, where I'm blinking output bulbs (21W @ 12VDC). Rate of blinking is 85 counts/min. The wave comes to be of 700ms. On time 350ms. In this 350ms of On time, initially I skip 50~100ms ...
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1answer
177 views

BJT Common Emitter - Active Load Biasing

I'm experimenting with/learning about the use of active-loads with a common emitter and I've hit a wall. When using a resistor in the collector it makes sense how the output voltage bias can be set to ...
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1answer
63 views

Programmable Power Supply Design: Issues with variable load and voltage stability

TL;DR: How can I stabilize/regulate an output voltage coming from a DAC and use it to drive a load? Long-time web-searcher/lurker, first time poster. I've been designing an automated test station for ...
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3answers
223 views

Cascaded BJT Amplifier Load

In my first layout, with a 9.2k load I get a gain of ~55 (20mVpp in -> ~ 1.1Vpp out). My current understand is that if I replace the resistor load with something else that presents as 9.2k (i.e. ...
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3answers
50 views

Choosing power supply with sensor

I have a sensor that requires 9-30 VDC power, 600 mW at 24 VDC nominal voltage. I have a power supply that can source up to 15 VDC and up to 400 mW in power. If 24 VDC is the nominal voltage of the ...
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6answers
2k views

What is Capacitive Loading (Intuitive understanding)

I have read about capacitive loading. But what does it actually mean like intuitively? Just asked this question so as to get an intuitive answer and also know what should I understand when one says ...
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1answer
64 views

load resistor - my setup is valid?

i want to test my output current of transistor 2N3906. I have two questions. Is my setup valid to measure the max load of the (2N3906) transistor? One plug of multimeter is on leftmost pin of PNP ...
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1answer
34 views

is is possible to drop voltage without knowing a components amperage

I am new to circuits/electrical stuff Correct me if i am wrong. if i have an led (2.1V / 0.02A) and if i give it 0.02A it will only take 2.1V or if i give it 2.1V it will take 0.02A Ohms law (\$I=\...
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0answers
31 views

UPS in front of an ATS for generator protection

At the countryside house there is this setup: And I am trying to protect the generator and house load from brief ~ 1s power outages like so: It works fine in normal conditions. Trouble is when I ...
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92 views

Drive Capacitive load with toroidal transformer

this question is related to my previous post: Toroidal transformer voltage breaks down I am trying to build a circuit that drives a capacitive load (approx. 9nF) through use of a toroidal transformer. ...

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