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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How to suppress noise in my circuit

I illustrated what my circuit do as you see. Switching frequency is 800 Hz. When I increase the load, a noise is heard from my circuit. Here is my drain oscillocope view in frequency domain. What can ...
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54 views

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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54 views

Calibrate for an inaccurate 50 ohm load in a DIY Vector Network Analyser (VNA) based on a VSWR RF bridge

I have built a "DIY VNA" using a frequency generator, an SDR receiver, a RF Reflection Bridge and a 50 ohm load. This is used to measure "VSWR values" of antennas to see what frequencies they are ...
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63 views

Bulk power markets hour ending convention why?

Is there an engineering explanation for the hour ending (HE) convention common to US Independent System Operators (ISO)? For example, hover over any MISO real time market data and they will show the ...
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137 views

Better polarization for push-pull

I have a circuit that used to drive a lighter load. I need to increase the current it manages to drive (and mainly the turn off time). In the following schematic I show what I want to do: the old ...
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452 views

Draw relation of rotation speed and output power of PMAC generator with brake resistor

I would like to draw a graph showing the relationship between rotation speed and power of an ideal Sinus PMAC generator with a brake resistor R(load) to be defined controlled via a 4Q Controller ...
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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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70 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
53 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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103 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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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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151 views

PMOS Load Switch Circuit issue

I'm working on a load switch circuit that drives a capacitive load of 1000 uF and a GaN transistor in parallel. The schematic of the circuit is attached. The input voltage is 50 V and the ...
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407 views

Electronic load for negative voltage PSU

I am making a MOSFET based electronic load to test my PSU rails. Below is a simplified version of my circuit with V2 as the PSU that is being tested. I want to be able to test negative voltage rails ...
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86 views

Does a Microcontroller act as a Capacitive load or resistive?

I'm designing a unity gain buffer (IC MCP6002) and in the datasheet, it says that a small series resistor is required at the output, if the load is capacitive and is >100pF. The input of the buffer ...
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1answer
52 views

Load current computation of complicated resistance network

I'm reading Electronic Principles 6th edition by Malvino. Problem 1.28 describes a network of resistors that I would like to know how to solve mathematically instead of experimentally (as described in ...
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1answer
1k views

How to design a 3-phase resistive load bank?

We are trying to design a 3-phase resitive load bank to test some step up transformers. We are receiving 3-phase 208v and stepping up to 3-phase 600V with 3-step up transformers wired in delta. Its a ...
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1answer
346 views

How to determin the load requirement for 24V DC power supply

I'm working in automotive industry, I got a project to add extra hardware to particular line. hardware actually requires 24v 70w. Now, we have a Power supply unit "power one he-24V-7.2a" in the ...
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1answer
2k views

Can anyone please help me with this ETAP Project?

I'm trying to run the load flow study, but instead I'm getting this error. Error 101-01: [Bus 2] Bus base kV is out of 40% range from bus nominal kV. Error 722: [XFMR 1] 2W transformer secondary kV ...
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246 views

Buck Regulator under load

I have built a buck regulator with a Texas Instruments LM5575-Q1. It was designed to handle an input range of 9-75V and output 6V at 500mA. When I have no load it does measure 6V but as I increase ...
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542 views

Can I use a capacitive divider to run an AC/DC converter from a higher voltage than its rating?

Suppose I have an AC/DC converter rated to run from 120-240VAC, and I want to run it off 480 VAC. I think I should be able to put two capacitors in series as a voltage divider, and run the converter ...
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91 views

Cycling peak load trips genset

I have an application where a cycling peak load from a 40hp motor is regularly tripping a 65Kw genset. Here are the details of the configuration: 65Kw Genset powered by a natural gas engine 40hp pump ...
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59 views

Why does power driven to the load has this expression?

I'm designing an oscillator, I'm using as textbook Krauss one. I would like to design the oscillator In function of the power it must give to the load and the fundamental frequency. I have seen this ...
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1answer
43 views

What is the equivalent capacitive load seen by the IC if in a datasheet of a chip CLmax=10nF given and I connect an RC filter as a load?

I have a stupid question where in the quick, the answer does not come into my mind. If in a datasheet of an integrated circuit, a maximum load capacitance is given, e.g. 10nF, and I want to connect an ...
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1answer
40 views

Different chemistry of batteries in operation

I had an idea of using different chemistry of batteries as shown in the schematic figure Is that possible to design a system in that way. According to the design, I am using all the evaluation boards....
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1answer
52 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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23 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
46 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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24 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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41 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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37 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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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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28 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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22 views

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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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
66 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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152 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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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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112 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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138 views

How to design a no-load detection circuit and auto cutoff if load is not presented?

How to design a no-load detection circuit, I couldn’t find a reference design, Is this possible task to perform? Load is an LED setup, 150V DC, 30mA If load is not connected to the circuit, power path ...
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46 views

How does a boost converter power the oscillating circuit and load at the same time?

so I've put together a boost converter circuit of my own and I have a problem, I want my boost converter to output reasonably high current but whenever I connect a high current load - the astable ...
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1answer
71 views

Bleed resistor with a load that can be turned off

I have simple AC to DC 40 W, 18 VDC power supply with a bleeder resistor to drain the caps. However, the load can be turned off of independently of the power supply. This means the bleed resistor ...
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68 views

BJT Differential Amplifier with active load Analysis

I completed the theoretical parts of DC and AC analysis. I want to test them with the simulator. Both DC and AC analysis failed. I killed DC sources in the AC analysis section and I short-circuited ...
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1answer
337 views

Single and 3-Phase Load Calculations

I have a probably obvious question about powering single phase loads from two legs of a 3 phase supply and how this impacts current draw calculations. This is something that is commonly done in my job ...
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75 views

Turn LED OFF when load is disconnected

Link for the System This is my existing system, I would like to Add a LED indicator which will turn off when the Lamp get burned/damage. Someone told me to use transistor but am not sure which ...
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1answer
136 views

Behavioral current sink in ltspice

In order to simulate a wireless sensor in ltspice, i need to model a load which draws 25mA current for 1sec every 10 min. Rest of the time it draw 40uA. Is there any way to do that?. I tried ...
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62 views

Two 200V outputs on 1 DC electronic Load

I have a product with two 230V outputs. I want to test if the product is also working correctly under high load(2kW on each output) I have an electronic load with 1 output. Can I just connect both ...
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35 views

Can I run this circuit with only one AC line in?

I had a problem hooking up P2634 Velleman Quad Triac Switch card today and vaporized the trace between the Positive VAC and the outputs (denoted by the red lightning bolt in the picture). I didn't ...
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1answer
83 views

Switching Inductive load with SSR on 240AC

I am working on building a kiln (approx 7.5kW) and am using a PID to control an SSR that drives a heating element I made from Kanthal wire. The problem I am having is that the heating element is a ...