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Questions tagged [high-current]

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Say how much current is required, high-current means different things to different people.

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Some of you may be aware that UFOs are sometimes recorded emitting microwave radiation. I think they might be using an electromagnetic coil that is being pulsed with DC current or is using AC current ...
Robert Francis Jr's user avatar
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I am designing a 4 layer PCB. For high currents in the inner layers, should I use polygons or traces? Trace width can be defined by the current requirement from the trace width calculator but what ...
Andr7's user avatar
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I'm designing a 24 V, 350 A, 70 kHz PWM DC brushed motor controller one direction only. Here is what I came up with until now: I will use Pi Pico as the microcontroller it can generate 3.3 V PWM with ...
AhmedH2O's user avatar
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I am interested in finding the maximum current a lithium-ion battery can provide for pulses in the order of 50 ms. If my battery can provide 50 A continuously and 120 A for 10 seconds, how can I find, ...
Greg Sorter's user avatar
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I have a high-current 220-volt AC power trace on my PCB. for this inrush power of want to use this trace parallel to each other. I want to know this way have positive effect? Do this parallel trace ...
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I've been working on building a circuit designed to handle a 40 A current with a switching time of less than 1 ms (currently using 500 us). I've attached the circuit for your review. Initially, I ...
Nim4eng's user avatar
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I am working with high voltage (1000+ V) and high current (600+ A) heavy duty cables (200 mm² or more cross-section). I am unable to find a good and clean way to join such cables. I am on the look-out ...
ElectronicsForLife's user avatar
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I'm designing a brushed DC motor controller for an 8.3 kW, 24 V, 350 A forklift motor. I will be controlling only one direction so I'm using a 70 kHz PWM from an MCU. The circuit will be a push-pull ...
AhmedH2O's user avatar
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I am trying to stabilize the current in coils in my experiment. For that I am using a circuit as in the picture: First section is a fast switch. It is also galvanically isolated from the TTL signal ...
Einaudi's user avatar
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I am trying to figure out the best way to implement an emergency shutoff for the H-bridge of a motor controller: My requirement is to turn off the 48V to the drain of the FET based off a signal which ...
Afam Nwokolo's user avatar
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Firstly I am sorry for this bad drawing but I just got it from the internet. Secondly I'll give a brief idea about the project it is a static switch would be used to drive general loads (inductive and ...
Hazardous Voltage's user avatar
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I'm looking for a 0.1A - 1A Fuse for a 600VDC system with an interrupt current rating of at least 6kA. I found some fuses like the TC-632414, which would fulfil the criteria, but they are quite big. ...
Felix Kunz's user avatar
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I have a question regarding mounting THT power transistors (TO220, TO247...). I am building a output full bridge for a welder and I thought about not using PCB at all for the power terminals (D,S). It'...
tomstr21's user avatar
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I was looking at the power calculations of the X-ray machines and found something a bit unusual. As we know the input power must be equal to the output power. Considering an x-ray machine giving an ...
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I'm trying to understand the feasibility of a DC transformer that takes a low voltage, high current pulse and converts it to a lower voltage, higher current pulse (with a resistive load on the output)....
Mandias's user avatar
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I have an stm32f407 which was running okay for like a month. but now i am seeing that whenever I connect power supply the current consumption is very high and the MCU is heating up a lot. The ...
Mir Hamza's user avatar
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So I wish to switch a current of roughly 3 kA on for short periods of time roughly every second. I have created a circuit shown below which I believe will be sufficient but after past failures I would ...
leasthollow's user avatar
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I am using a 24 V 100 A additional vehicle alternator for charging my additional battery bank of 24 V. I need an over-current/short-circuit protection for my battery bank. I am considering using a DC ...
James Ross's user avatar
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For my application, I am using 4S10P Li-ion battery (with NXP's RDDRONE-BMS772) to power the following load: 8 ESCs to control thrusters 1 Raspberry Pi with hat to control ROV (powered from 5V buck ...
Quang's user avatar
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I am trying to couple a high voltage transformer (automobile coil) 220 V to 10 kV, with a low voltage home made transformer 220 V to 6, 12 V (think MOT but bigger). I have tested/used the LV ...
user1570144's user avatar
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I inherited two 12 V, 1200 W server power supplies a while back and I'd like to press them into service as electrolysis cell power supplies for making (per)chlorates. I need to drop the output to ~5 ...
Franklin Knight's user avatar
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We can easily find the recommended cross-sectional area of copper wire when the current is DC. But when the frequency is high, e.g., 13.56MHz, how could we calculate a suitable size of copper strip to ...
Mingan's user avatar
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I need to convert a digital signal generated from a microcontroller GPIO (0-3.3V) to a high-power (15-40W) current signal to drive an LED chip for illuminance, where the signal frequency can range ...
hailstone's user avatar
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I’m building a coil-gun and I just got a 400 V 1.3 mF electrolytic capacitor which will discharge a large current. However, my coil is made of 1 mm^2 copper enamel wire which has an resistance of only ...
Joshua's user avatar
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For some high power high voltage lines DC is used with the advantage that sinus wave AC obviously doesn't use the line to it's maximum capacity at all times. To correct this, we could use square wave ...
Čäřý's user avatar
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1 answer
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I'm currently working on a project that involves a 25 IR transmitter matrix, with each individual IR transmitter requiring around 50mA of current. This results in a total current requirement of ...
Krishna Bansal's user avatar
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I have an application which I need to switch a 1000 W 24 V 40 A inverter on, and I do need a way to switch it on with a MOSFET (I don't understand the way how to choose it properly) although in the ...
Hazardous Voltage's user avatar
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3 answers
355 views

How is current limited in high-power circuits such as ESCs, considering that they might provide tens of Amperes of current?
Constlo's user avatar
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The car in question is a Nissan Leaf, whose 12V "starter" battery is replenished by an onboard DC-DC converter with a maximum safe output of about 100A (this is used as a handy way to tap ...
LMF5000's user avatar
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I am assembling a power supply for xenon arc lamps. I use a simple welding inverter as a stable current source. I use the presented scheme. The ignition circuit generates pulses up to 25-30 kV for a ...
Typeof undefined's user avatar
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1 answer
179 views

I'm designing a circuit that will supposedly pass 30A continuous, I assumed the best I can do to prevent tracks from burning is just use copper fill so that essentially the whole area is my high ...
php_nub_qq's user avatar
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2 answers
454 views

I have a 24 V lithium-ion battery which will pump as Iᵐᵃˣ 40 A and I need to connect a capacitor directly to the 24 V battery which will be 10000 μF(10 mF). The usage of it is to keep the system ...
Hazardous Voltage's user avatar
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1 vote
2 answers
69 views

I have a high-powered buck DC-DC board with low RDSON FET's (10-20 A) that powers IC's that are sensitive to noise on the IO circuitry. I've done the usual of input/output bypass caps, RC snubbers, ...
electronuts's user avatar
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1 answer
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I have a 9~15 volt source (a battery) that I need to turn into stable 12 volts efficiently. The load (a graphics card) will draw up to 200 watts. Can I just get a boost converter and a buck converter ...
Ansis Māliņš's user avatar
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4 answers
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This picture describes the current state of my project that I am working on. I am making a half-bridge high-current motor driver (that will eventually evolve into a full-bridge). The motor is ...
theph's user avatar
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1 vote
1 answer
173 views

I want to simulate a 1000A current flowing through a circuit in LTspice. The supply voltage is 230V AC @ 50Hz. This circuit will also have 0.05 milliohm in series with the load (this resistor acts as ...
JoeyB's user avatar
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1 answer
162 views

I am looking to drive a load with the specifications as follows: Load Resistance = 2.2 ±0.3 Ω Load Current = 1.5-4.5 A Nominal Load Current = 2 A The load current should never go below 1.25 A at any ...
Debugger_Op's user avatar
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8 votes
3 answers
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According to some calculations on this site (using standardized IPC-2221) it seems that a set of parallel traces handles more current than if they are joined in a single trace. Why? https://www.4pcb....
Victor Suarez's user avatar
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1 answer
539 views

I'm using the following transformer with the output in a parallel configuration such that the input is 230V and the output is 12V. considering the tranformer is rated for 100VA this means the maximum ...
KMN's user avatar
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-1 votes
1 answer
131 views

I was working on a BLDC motor circuit in my apartment which has 1 small room and not much airflow. I am using up to 30V and 10A to drive the motor. Because I am still testing on a breadboard, a lot of ...
Trev347's user avatar
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1 vote
1 answer
132 views

I am using a direction indicator LED "2BA 013 398-03" from Hella for our robot. The system power is 24 V. The main microcontroller that also controls the LED on/off, can not provide the ...
O. Efeoglu's user avatar
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1 vote
2 answers
433 views

I would like to measure the RMS current draw of several house appliances, in addition to the primary and secondary side current of a step-down transformer. Simply placing my multimeter in series with ...
A.H.Z's user avatar
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2 votes
2 answers
733 views

I am trying to power a 14 mΩ resistive load at 0.3 V 21.5 A to add some buffer to the design I'm trying to design for 30 A, since the load can change. Without going too in depth the load is a new ...
user336223's user avatar
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0 votes
2 answers
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I am trying to replicate the charging method of fast-charging stations for electric vehicles using one or two Li-po cells. The purpose of the experiment is to measure the impact of high C-rates on Li-...
Carmen Selva's user avatar
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1 vote
1 answer
365 views

I have to design a BMS for a 12s, 1p battery configuration. I am using a BQ76952 IC to do voltage measurement and passive balancing. The continuous discharge current is 150 A and peak current is 300 A....
Uzair's user avatar
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1 vote
1 answer
81 views

I want to remotely check if one of my home sockets (which happens to power a heater) is transmitting current or not. I do this as a hobby project, so my main priority is to learn through the process ...
Martel's user avatar
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0 votes
1 answer
125 views

Will this circuit draw too much current from my power supply? I have this schematic that I found from similar work to mine. However, they seem to have used a very small resistance before the large ...
Jerard Vincent Ang's user avatar
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0 votes
0 answers
102 views

I need to design a power inverter that might have up to 60 A of current flowing through the leg IGBTs and still could not figure out the best way out for that amount of current. The DC bus voltage may ...
Iron Maiden's user avatar
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5 votes
2 answers
3k views

This is a follow-up for the aluminum bar question here: Aluminum bus bars connection to PCB My design now is based on copper - low resistance, assembly by soldering. For now, this is probably the best....
TQQQ's user avatar
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1 vote
2 answers
177 views

In a separate but related question, I asked how EEs normally wire a large number of SCRs in parallel for high current applications. For this 1 example (sample size = 1), I found a single hockey puck ...
James Strieter's user avatar
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