Electrical Engineering Stack Exchange
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Questions tagged [electronic-load]

An electronic load (sometimes called an "e-load") is a device which simulates an electrical load, often as a way to test a circuit's behavior under various load conditions. Many e-loads can be programmed to act as a constant resistance, constant current, constant voltage, or constant power load.

An electronic load (sometimes called an "e-load") is a device which simulates an electrical load, often as a way to test a circuit's behavior under various load conditions. Many e-loads can be programmed to act as a constant resistance, constant current, constant voltage, or constant power load.

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What is the exact meaning of Load?

I am just starting off with hobby electronics and can't get hold of the concept of Load. Do electrical appliances also "Draw" current. An air conditioner upon start dims the light. My point is that if the voltage difference is not enough to move…
Asad Nazir
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What is the maximum current of an electronic load?

Here is the specification of an electronic load: If the load is set in current mode, the current is limited to 25 A. Nevertheless, if the current is set in resistor mode, I could think that it is only limited by the power (1500 W @ 20°C.) Suppose…
Jess
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Is it possible to use a Mosfet in switching mode as an electronic load?

I'm trying to use a mosfet as an electronic load to measure the IV curve of a solar cell, but if I use it in linear region it dissipates too much power. I was thinking that I could use it in switching mode like sending a PWM value from a…
alejandro-ordonez
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Beginner information related to constant current dummy loads

I am beginning an electronics design project to build a constant current load to drive testings for batteries, bench power supplies etc. I have been hard trying to locate some black-on-white information over the Net to get the basics: what is the…
S. J. L.
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Electronic test load design

I'm considering designing/building a fairly basic electronic load (constant current, but possibly also constant power and resistance). However, after drawing up a few ideas for the basic operation, I got stuck. My first idea was to go the digital…
exscape
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setting up an electronic load

I have an electronic load that I want to use to help me with some ATX switch mode power supply repairs. The instructions that came with the load were rather sparse and I haven't found much for my particular situation on the net. The electronic…
Russ
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why smartphones don't cause noise on the around speakers

Before the smartphones (or maybe before the some new tech) when a cell phone rings, the speakers around it made noises. Hovewer, nowadays they do not. Why? What changed?
WhoCares
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Electrical characteristics on datasheet

What does this part of a datasheet mean? I always get confused when studying them... Is the user suppose to meet these conditions before getting the results stated on the sheet?
imran muhd
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Fixing overshoot in current regulation of AC electronic load

My AC electronic load (previous question here) shall have a constant-current mode. It is being simulated in LTspice. @devnull helped design the circuit for AC loads, but for simplicity's sake in the context of this question, I have reduced the…
1N4001
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MOSFETs in parallel, combining heat-sharing and ballast resistors?

In a circuit like this: simulate this circuit – Schematic created using CircuitLab If each 3 MOSFETs be next to each other and on one heatsink, is current sharing balanced? If MOSFETs have TO-220 package (IRF540), how much power can I pull from 6…
ElectronSurf
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ATX Computer PSU: OK to connect loads between positive rails, e.g. +12v to +5v

I have looked, but haven't find an answer. Are ATX computer PSUs capable of having a load connected between their positive rails, so that for example, current would flow from a 12v rail to a 5v rail? Specifically, I need to know: Does the…
Jodes
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Battery/Charger Not Reaching Float with Load Attached

I'm trying to add a backup/UPS to a system I have outside with the following battery charger - https://www.meanwell.com/Upload/PDF/ENC-180/ENC-180-SPEC.PDF . The DIP switches are set for AGM mode. My load is ~72W or 6A @ 12V and I have a SLA 12V…
fullyjosh
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Electronic load, Problem turning MOSFET on

I am trying to make an adjustable dummy load to test a 12V supply, I’m having trouble with the op-amp feedback circuit. Attached is a simplified schematic. I have tried lots of things and stripped it down to this. Basically when +In of the op-amp…
Benjamin
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Zener problem in motion detection circuit

I am studying a sample motion detection circuit which uses a D203S PIR sensor and a BISS0001 motion detector IC. After sensing motion, BISS0001 gives output which switches SCR and SCR switches TRIAC. I don't understand the role of some of the…
Avradip
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What's the purpose of the resistor in a 3A load box

There is a resistor R5 in the 3A load box below. It seems it add some positive feedback to Q1, but I'm not sure. What's the exact reason to add it? The circuit comes from here.
diverger
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