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.

learn more… | top users | synonyms

0
votes
1answer
34 views

How to get the same output signal but with an increased capacitive load?

I'm designing a CMOS circuit of a VCO and it works perfectly fine when tested independently. Now when I cascade an other block like a divider to it, the output isn't the same as before. Rather its ...
2
votes
2answers
65 views

Mystery issue driving load through NFET with microcontroller

U1 is a microcontroller driving M1 to drive a load. I am running into some bizarre behavior and I'll try to include all the relevant information. Hope it's not too much. M1 is a logic-level FET. ...
0
votes
1answer
37 views

How to calculate power draw per rail, to see if Power Supply can handle the load?

I am purchasing this power supply for a computer I am putting together. http://www.mini-itx.com/store/information/picoPSU-160-XT.pdf and while in discussion with a rep, they spoke about not ...
0
votes
0answers
27 views

Large 3D Printer Heated Bed - High Current Resistive Load - Preventing Back EMF

I have been trying to solve a rather troublesome issue for some time now, and will try to provide as much information as possible. In short, I am powering a 3D Printer and its 12"x12" heated bed by ...
0
votes
2answers
78 views

PWM driven power supply [closed]

As you have asked me, I will explain in better words my problem. I'm working on real-time bench. I have an algorithm on my laptop and I interact with hardware through a calculator supporting real-time ...
1
vote
0answers
31 views

Spoofed solar grid-tied system load management

Thanks for having me in your midst. I am new at this site. The situation I am designing for is thus: My 5 kW solar array has a micro inverter on each panel. When feeding into the grid, the ...
0
votes
3answers
65 views

Why a transistor (MOS) changes the output current (Ids) with changes of a load resistor?

I am a newbie, and I can not understand, why current of the MOS changes if I change the resistor. Basically, why transistors so depend on load? And how I can calculate changes.. Regards, Paddy
3
votes
1answer
105 views

Different LED for POWER ON and for LOAD ON, how to wire?

As you can see in the picture, for LED1 it's all good, 12v and 800 ohms = 15 mA to the led. But i don't know how to wire LED2 since the load to the LED will change depending on the load/Vout of ...
-1
votes
2answers
79 views

What is the measurement resolution of my load cell?

I am trying to figure out the resolution of a load cell (smallest weight change I can measure) that is connected through a load cell amp and being read through a 10 bit ADC (the DATAQ DI-149) For ...
1
vote
1answer
60 views

Problems when loading an Ultrasonic transducer (reflected power)

I have a very simple setup that is giving me problems I cannot understand: Apparently, the reflected power is the same as the power generated by the amplifier (both measured by the amplifier, ...
-1
votes
2answers
50 views

Complex power of a load

Simply, if there is a load that is 80kW and 95kVAR (inductive), can I then say that the complex power this load consumes is 80 + 95kVA or is there more to it?
1
vote
1answer
63 views

Why the need for capacitive loads?

Pioneer, Kenwood, Sony, Onkyo, Denon you name it, they all have a similar circuit like this: Why they use C1 and C3 for? Thanks
1
vote
1answer
57 views

Stabilising a constant current load opamp feedback loop

I designed a constant current load around the ACS712 Hall-effect current sensor (module from eBay). This module gives a voltage output of 185mV/A superimposed on VCC/2. Its current range is +-5A altho ...
0
votes
2answers
78 views

8 bit-increment register with load and clear

I am quite new to design circuits topic and i have one question regarding to my assignment question. I've a simple assignment to create circuit below : I've worked on logisim to create this ...
1
vote
0answers
67 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 ...
0
votes
0answers
22 views

Generating Large Test Cases for Power Flow Simulation

I am trying to investigate the scalability of various power flow methods for large power systems (1M+ buses). It seems however that most test cases that are readily available are generally quite ...
0
votes
1answer
72 views

Transformer output connected to another transformer. Measuring 'Real Power' at input of first transformer

I have a watt meter connected to the primary of one transformer to measure power. The output of this transformer is connected to the input of another transformer. The watt meter is measuring the ...
0
votes
2answers
45 views

Using a Servo motor as load on a system

Can a Servo motor (or any electric motor) be used as a load on a system ? meaning can it reprisent for example a certain dead weight ? In the picture below you can see a motor driving 3 gears, to ...
0
votes
1answer
42 views

whats the right kind of reference to calibrate a measurement instrument?

I have been working in a calibration system for a multimeter I'm developing To do this i'm calibrating the reading values using Fluke meters (bassically my instrument has to match the fluke ones) ...
0
votes
2answers
87 views

Why would an electronic timer have a minimum load?

I need to replace an electronic timer lightswitch, and both the old one, and this example of a replacement, state that they have a minimum load of 40w. Why would the switch have a minimum load, and ...
0
votes
1answer
53 views

Transmission lines/Antennas power delivered to a load, why halved?

When seeing transmission lines and antennas in class we saw that the power delivered to a load is equal to: $$ P = \frac{1}{2}\cdot \left | I \right |^{2}\cdot Re\left \{ Z \right \} $$ Where I is ...
0
votes
2answers
70 views

3V7 to 5V level conversion

In my product i am using a wifi module requires 3.3v and a bunch of other components requires 5v. For this i am using 3.7v 3000mAh battery. So here i have a doubt whether to use which case or any ...
0
votes
2answers
33 views

Lenient MUX and Load Signal

https://www.youtube.com/watch?time_continue=25&v=d3bF2v056WU http://i.imgur.com/ipDYgd8.png I'm going to ask about some names. You could say "they are just names" but if I get some context for ...
0
votes
1answer
76 views

AC load driving using FET

I want to drive an AC 220 V load(heater) controlled PWM from Microcontroller. I want to use power FETs to load drive upto 2000 Watts. I m not guessing any valuable circuit design. If anyone have any ...
-2
votes
1answer
86 views

very basic basics [closed]

I just started studying but I've been having problems because my professor assumes that we know very basic things that we actually don't. So my questions are: What do I need exactly to have an ...
0
votes
2answers
74 views

Severe Voltage Drop When Applying a Load to Opto-Isolator Circuit

The circuit below uses the Vishay ILD213T optocoupler (datasheet). The load in question is a 5V solenoid valve with a resistance of 46Ω. The circuit is configured with "IN1" connected to a GPIO pin ...
0
votes
2answers
226 views

Buck converter load testing

What is the best way to test the load response of a DC DC buck converter? I thought that a power resistor to fully load the circuit would be the best thing to do. Any thoughts on that? Specs: ...
2
votes
2answers
76 views

What is the effect of heavy loads on the electrical grid?

When our neighbors turns on a motor, a bulb in our home turns off for a very very short time and then it turns on again. It is something like a quick flash but a man eye can notice it. Would you tell ...
0
votes
1answer
50 views

What is the real purpose of analysing an amplifier with resistive or a current source load? How does its behaivor change?

We're analysing in class common source, common gate and common drain amplifiers and the analysis of resistive load and current load is being done but I don't get the purpose of doing this... how does ...
0
votes
1answer
41 views

Simple Analogy for Impedance and Load?

Can someone explain what impedance and load really are? I have a textbook in front of me and I have taken and passed the EE class on it, but aside from a textbook definition I can't seem to get a ...
0
votes
1answer
75 views

A question about very simple light Dimmer circuit?

I've learned that a Triac works as a switch for controlling AC current. Why not connecting the load (L1) and Triac in series? at the position of red arrow? My reason is that a small amount of current ...
1
vote
1answer
33 views

Powers Signs differ between sources and loads?

Alright, so my textbook specifically states that negative power indicates that power is being extracted from a device (I'm assuming they mean for loads) and then shows a negative power value at a ...
0
votes
1answer
47 views

Reversed Current in Passive Loads?

So I'm starting with the Nilsson/Riedel electronics text and got confused early on. They show a simple loop circuit (figure 2.15 for those who have it) with 1 ideal voltage source and 3 resistors and, ...
-3
votes
2answers
76 views

How does one load draw more or less current compared to another load? [closed]

What got me asking is I'm currently studying about NPN transistors whose base draws very little current. Why does the base draw so little current, lets say compared to the collector? What ...
0
votes
1answer
202 views

LM317 constant current load

Would this work as a constant current load since I don't have a high power pot? Is there a better way to do it? simulate this circuit – Schematic created using CircuitLab
1
vote
0answers
115 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 ...
0
votes
2answers
57 views

What sized motor could spin ~2lbs?

I am working on a prop for a film -- I have to make a sign spin in a circle (simple attachment to a motor) and have variable speed. I know enough to wire the thing, but am having a hard time getting ...
0
votes
2answers
67 views

DC Supply Load Dummy based on NPNs

I am fixing an old regulated load dummy that I use in my workspace. It was a mess and I want to modify its regulator side. My question is: will the circuit showed in the image work properly? If you ...
0
votes
1answer
220 views

Few doubts about turning an atx psu into a bench lab power supply [closed]

First, thank you for your time of reading my questions. As the title suggested, my questions are about turning a computer power supply into a lab power supply. I already did my homework and read ...
1
vote
1answer
191 views

Step Down Regulator - Output voltage unstable/voltage drop with load

I'm currently trying to build a USB charger device for my mobile phone using an old 12V car battery as power source. I purchased different step down modules (see below) to regulate the voltage from ...
1
vote
2answers
113 views

Calculating the discharge of Ultra Capacitors

Say I have two 500F ultra capacitors, connected in parallel, charged at 15V. These are the capacitors BMOD0500 P016 B01. Then say I connect the capacitors (via an inverter) to a 230V light bulb that ...
0
votes
1answer
56 views

What does “Exclusive of Load” mean?

Short Version: Does "30mA exclusive of load" mean the minimum draw while idling, or avg. draw? Long Version: While designing a circuit to interface with a radar sensor similar to this, I've noticed ...
1
vote
0answers
125 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 ...
1
vote
1answer
78 views

Effect of load changes on buck converter

I know to some extent that the control block monitors the output and adjusts the duty cycle accordingly and the output changes with change in loading (that's why the control block is used in the first ...
0
votes
1answer
79 views

constant load on load sensor

I heard it is impossible to create scale which will have constant load on it. Is there any workaround, or what type of sensor should I buy? I need to build a scale which will handle up to 100kg. ...
1
vote
3answers
123 views

How can I properly tell if a wall wart is OK to use for old hardware?

I bought a Sega Genesis model 1 from a local thrift store recently for $10. It was sold as "broken, for parts only". It didn't come with any cables. I've ...
0
votes
1answer
53 views

Current monitor shows overload even for small load

I have a current-shunt monitor using INA202 between a 5V power supply and loads. The current monitor should turn off a MOSFET switch and disconnects the loads if the load current goes over 150mA. I ...
0
votes
1answer
92 views

Series inductor as discontinuity in transmission line

Dual to this question is the following circuit: simulate this circuit – Schematic created using CircuitLab An infinite transmission line (with characteristic impedance \$ Z_0 \$) ends ...
0
votes
1answer
127 views

Shunt capacitor as discontinuity in transmission line

As in the following circuit simulate this circuit – Schematic created using CircuitLab suppose that an infinite transmission line (with characteristic impedance \$ Z_0 \$) ends upon a ...
1
vote
1answer
2k views

What is load impedance?

Like resistance for DC, Impedance is for AC. But what is load resistance. How does it used in a circuit. Had this doubt when reading a line from the book foundations of electronics by D ...