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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74 views

Are there any “smart” fuse boxes?

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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42 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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MAXIMUM POWER GENERATED BY A CIRCUIT [closed]

This question deals with the use of the venin theorem to find the maximum power generated by the circuit which consists of a load resistor, power source and a current source.
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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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57 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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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
48 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
46 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
57 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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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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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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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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48 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
43 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
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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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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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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
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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
84 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
99 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
58 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
168 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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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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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
32 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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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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57 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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1answer
49 views

Differential Amplifier - Active Load Current MIrror Logic

I'm trying to wrap my head around the workings of a differential amplifier when a current mirror is used as an 'active load' With reference to this Youtube video leecture: here My understanding so ...
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46 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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1answer
115 views

I do not understand this sentence: “Resistor is used to stop loading the transistor”

In this circuit, resistor R4 (just before the transistor) is used to stop loading the transistor. I do not understand the part "resistor used to stop loading the transistor".
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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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46 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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45 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
58 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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74 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
33 views

Adding Parallel Diodes to a load

This question is based on my previous question - Measuring voltage drop across a diode in a switched circuit I have started a bounty on that question. At the same time, I am trying to understand why ...
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1answer
49 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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3answers
60 views

Impedance Matching between Source and Load

I am having this basic doubt In the basic crude basic block diagram, we have a source, transmission line and load, all having an impedance of 50Ohms. But according to maximum power transfer theorem, ...
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1answer
31 views

Auto disconnect the load while charging the battery

Here is a tentative schematic that would use the battery (3.7V, 3500mAh single 18650 battery) to power the load under normal circumstances. The charger is disconnected at this point. When the AC-DC ...
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0answers
60 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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1answer
45 views

Why is the load a resistive load, not an inductive load when I measure the current and voltage of the transmission line?

Question: Measure the transmission line of a substation. The relation between voltage and current is that the current lags the voltage for 180 degrees, so now I want to ask Which part of ...
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2answers
67 views

Adapter load switch MOSFET schematic questions

I have a few questions concerning a input adapter load switch schematic for a battery charger IC (bq25780S). I posted a screeshot of this part of the schematic from the reference design (BQ24780S ...
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1answer
172 views

Capacitance multiplier with voltage regulator

I am trying to make a low noise voltage regulator. My concept is to use a symmetrical regulator using LM338 followed by capacitance multiplier (ESP version). According to Rod Elliot from ESP, the ...
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2answers
52 views

Overloading buck regulator

I'm having a hard time explaining to myself why the output voltage of a buck regulator drops at the load when the load pulls more current than the max limit of the buck regulator. Can someone help ...
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3answers
79 views

what is the load line and operating point used for in practical?

I have a hard time understanding what an operating point and load line represent and why do we need them at all. After reading some wikibedia, What I got is this load line represent response of the ...
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1answer
126 views

Voltage Reference Resistor Calculation (Shunt)

I am trying to design a circuit using this LM4040-5 Voltage Precision Reference for my DAC8554, but I can't for the life of me figure out how to properly calculate the resistor value to be applied. ...
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3answers
65 views

How do I power many devices off of a low voltage microcontroller?

I'm new to electronics. I have a GENIE 08 microcontroller, and I want to control multiple LEDs from one pin, and a few buzzers from another, and an LCD from one too. I am worried that the power ...
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2answers
50 views

22mA dummy load

Welcome all. I have system with 5.1V PSU sourcing 20mA. My load is circuitry running of 5V sinking 15mA to 18mA. However, in extreme condition my load sinks 22mA. I need to test each PSU to see what ...
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Soft latch power switch using load cell as switch? (low power consumption)

I'm trying to make a (weight) scale turn on by "stepping on" it. I have managed to make a working scale using an HX711 module with a load cell using an arduino. It displays the weight on a 1602 lcd. I ...

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