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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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I am making a POV display. For that I am using an LED strip, a motor, and a Raspberry PI 3. All work with 5V. My motor consumes about 6 A, LEDs 4 A, and the Raspberry Pi 3 normally uses 2.5 A. Thus my ...
0ussama's user avatar
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I'm developing a circuit to power a 300W DC motor with 25A rated current. I have experience powering smaller motors with motor driver ICs, but I can't seem to find an in-stock motor driver IC designed ...
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For the A2 terminal of the triac in pcb design, I want to use both the front and back surfaces of the pcb. How should the vias be between the back and front surface?(actually zone areas in surfaces)I ...
johny adv's user avatar
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UPDATE Thanks Aaron and jp314 for your comments. We just probed some more and I think jp314 is right. We found that the high side driver was skipping some pulses. The pink pulse train is from the ...
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I am trying to trigger a device which requires a current of 1000V 30A current for operation, but for a very short period. It just needs to be powered for a maximum of 50-100 milliseconds but 6-8 times ...
Sandeep Thomas's user avatar
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I'm looking to make a linear (LM317 based?) high current / voltage regulator (30 amps at 0 - ~35 volts). I looked at some desings online but still have some problems with it. Maybe you can guide me ...
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I'm working on a schematic for a power supply system for several linear actuators. I would like to minimize the power supplies needed to run the system. Can the source used to switch a relay be the ...
bradburydoom's user avatar
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I have to arrange 3 of 12V batteries using a DPDT switch. Position A: 3 batteries are connected in parallel to supply 12V to devices in my van. Position B: 3 batteries are connected in series to ...
Mike's user avatar
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I’m hoping for some advice on wire gauges in practice with respect to heat/safety. I am planning an LED strip setup and have created the following diagram: The setup is designed to be modular, A ...
SeanA's user avatar
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I am in the process of getting a PCB ready for mass production. The PCB has high-current traces (up to 32A) and in order to improve isolation and protect it from the environment I am looking to either ...
Aleš Kramžar's user avatar
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I have visited various site which include the table for current capacity of insulated wire and the busbar but no a single website gave the any particular equation or any calculation to measure current ...
Smit Fefar's user avatar
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I am designing a circuit for my lab, and in that application I need to have several low noise current source driving coils at roughly 7V, 20A. I could not find a benchtop power supply cheap enough so ...
hz lin's user avatar
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I have problem driving a high current DC motor (RS-775 24V-12V 80W), the MOSFET getting very hot when I use PWM signal. I'm using Raspberry Pi 3 b+ to generate PWM signal at (pin 8) which connected to ...
0ussama's user avatar
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What are the alternatives to switching high currents (or voltages) of electricity, besides a relay? A relay is all good and well, but it is rather bulky and requires almost 75% of the relays rated ...
Lightning323's user avatar
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I am attempting to design a power distribution board for up to four ESC controllers that can draw a continuous current of 40 A per ESC (so 160 A), from one LiPo battery. Additionally this board will ...
Chance K's user avatar
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I have a load banker (a toaster run by a 100 - 800 amp 10 - 40 V DC welder with non contact amp and volt sensors built in). I am trying to make an arc flash prevention unit for it. Relay control with ...
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I am creating a power management circuit for a 20m RGBW led strip, these leds operate on 5v and would require a current consumption of about 60A. I will actually split it into 8 channels of 2or3 ...
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I'm needing to design a PCB for power distribution. I have a 90W (5V 18A) power supply that will be responsible for powering 5 USB Type A outputs, each USB drawing up to 12.5W (5V 2.5A) MAX. I'm used ...
Explorex's user avatar
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The old fashioned way to configure a lot of boards is to use pin headers with their jumper cap, i.e.: https://www.tme.eu/en/details/jumper-kpl/pin-headers/connfly/ds1027-01-2ab801/ On my board I need ...
Mark's user avatar
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I'm working on a coilgun and I need to discharge a capacitor bank through a coil to create a strong magnetic field. My coil has a resistance of 266 milliohms and when fully charged, the capacitors are ...
Gustav's user avatar
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I'm thinking of controlling a few high ampere water pumps from microchips. the current draws of motors will be around 38A (single phase 220V motors). is it safe to use a MOSFET (IPW60R070C6 from ...
Elementronics's user avatar
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I have a DC motor (I=10A,V=12V.) I want to drive this motor with an H-bridge and want to have speed control with votage (2-12V.) I think I need a regulator with high current. How can I make a high ...
Behnam khorasani's user avatar
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I have a transformer from a UPS. High-voltage side: Low-voltage side: Is it a good idea to convert it to a spot welder? I am worried about the flimsy cables on the high-voltage side.
Dimitrios Desyllas's user avatar
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Based on a suggested circuit from the datasheet, supplied current of LM7805 voltage regulator can be increased. I can't source that BD536 PNP transistor or any equivalent listed on some websites. ...
Elementronics's user avatar
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2 answers
221 views

For my work, I’m working on a project that uses a power supply that outputs 42A DC at 5V limit. While I know that 5V is nothing if I were to come into contact, poor grounding can still cause flashes ...
dark_goldeneyed's user avatar
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Is it possible to "stack" the outputs of 2 or more buck converters? The buck converter circuit in question I am considering is the 48v to 5v typical example circuit from page 20 of the ...
Josh Nabours's user avatar
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1 answer
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I need to switch on/off a cooler system that draws 20A at 12V using an ESP32 GPIO pin. The ESP32 GPIO pins work at 3.3V logic with maximum 40mA of current. Do you have a simple and safe solution to ...
Angel0ne's user avatar
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I need to be able to switch up to 100 amp @ 48v DC with a Raspberry Pi. I came across this video which is what I am trying to emulate: https://www.youtube.com/watch?v=dhIbZa6yg5k at 1:15 in the video ...
NomNomCameron's user avatar
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1 answer
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I have a 17V DC power supply which can provide around 50A. I want to build a battery charger using it which outputs 14.6V constant voltage. Therefore, I'm planning to manipulate low cost, widely ...
Tencent's user avatar
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2 answers
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Would it be possible to jumpstart a car using mains power? I'm talking about a device that plugs into a 240V AC mains power outlet, and clamps onto a 12V DC lead acid battery. Here are the main specs ...
voices's user avatar
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I've been experimenting with ultracaps for a while now and I have a very specific problem: I use the ultracapacitors to compensate for line inductances and general power filtering. When I install a ...
Flowx's user avatar
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3 answers
360 views

I have looked at Buck converters, voltage dividers, and current dividers, but I have not found a way to divide, BOTH, voltage AND current + being able to do it over high voltages and currents. With ...
CircuitB0ard's user avatar
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2 answers
314 views

I'm making a pulseable solenoid circuit via PWM at around 20 hz. THe solenoid is a heavy industrial type that pulls a whopping 18 amps. My snubber circuit gets hot and burns up as the current is too ...
DonP's user avatar
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I have a question about SPI line. I have seen in several circuits that an RC filter (R in series and C is between the MISO line and ground). Does anyone know the usage of this filter in SPI MISO line? ...
user15847's user avatar
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1 answer
736 views

I have source 400V 50Hz 3 Phase. Each line is 230VAC and maximum current passing by is 10A. This source is connected two motors and one AC/DC converter (24V out) and it is connected to control circuit....
alfonso's user avatar
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-1 votes
1 answer
173 views

I made a power card.there are 3 lm2678 regulator on card like webench png bottom.I want to connect two lm2678 output parallel for 5a+5a=10a.Is it true a way? is there a problem?
Ertugrul Sahin's user avatar
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I would like to drive a peltier (rated max 12V, 5A) with three considerations: i want to control the voltage absolute value with a PWM signal from an arduino (30kHz), the voltage across the peltier ...
pyubero's user avatar
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0 answers
101 views

I need to drive n-mosfets to switch on/off resistors in parallel with Lion cells. Each cell+mosfet is in a series - 50 cells. It looks much like a BMS except it NOT a BMS, but a cell test system. See ...
2nd info's user avatar
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1 answer
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I need to design a solid state switch to disconnect a battery (28V) from a load that can go to a maximum of 70 Amps in a 40C environnement. An SSR like the Crydom D06D100 could handle this using a ...
louisthewiz's user avatar
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1 vote
1 answer
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I have a circuit with several neopixels and an ESP32 MCU running with micropyhton. Under full load, the circuit including the ESP32 draws around 200mA at full load. Now I'd like to add another ...
Primesty's user avatar
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0 votes
0 answers
35 views

I need to make a battery pack for a robot horse that has 4 x 12V geared DC motors turning wheels on the four hooves. Here are the power draws: 5V systems: Rasperry Pi (3 amp) Aruduino Uno (<1 amp) ...
SvdSinner's user avatar
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3 votes
3 answers
197 views

I have two microwave transformers in series connected to a Cockroft Walton voltage multiplier. This allows me to generate well over 1 million volts (measured by spark gap) at high current (it looks ...
SR999's user avatar
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0 answers
285 views

I'm working on a test fixture for which I need to generate a 10Vpp square wave, at 13.56MHz, capable of driving 250mA. My first attempt was a using opamps, but very quickly realized I can't drive ...
jrive's user avatar
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0 votes
2 answers
925 views

I try to make a 30 V, 5 A power supply using LM338 (without heatsink) voltage regulator IC. In my case the value of R1 is 100 Ω and R2 is 2.2 kΩ. then it gives 29.6 V as output. when we connect a 10 ...
Aditya Prajapati's user avatar
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1 vote
1 answer
160 views

If you are familiar with dental micromotors, there are generally two kinds of them in foot pedals: simple switch or variable speed (like throttle.) The simple one acts like a push button to be ...
UnoBianconero's user avatar
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1 vote
2 answers
130 views

I would like to know if there is a risk of damaging a 4AWG Battery wire (worst case fire hazard) which is rated for 60V, 150ADC if 300Amps @5VDC is passed for only 2 seconds? I am working on a test ...
Rav's user avatar
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1 answer
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I want to use a 12V 15A switching power supply for a 12V 10A DC motor which has about 9A start current and 6A no load current, I also want to add a push button switch for on and off function to use it ...
UnoBianconero's user avatar
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0 votes
2 answers
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If I have a 3mm x 3mm x 3mm piece of copper that conducts a DC current, is there a way to determine its maximum safe current? I looked into here, and found information for copper wires, shown below. ...
plu's user avatar
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1 vote
0 answers
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I'm doing a project combining different electronic modules with an Arduino Uno. There are five semi-independent pre-assembled modules that I need to power, and with whom the Arduino interacts with (...
Guilherme Borges's user avatar
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6 votes
2 answers
196 views

What device can be installed between the glow plug relay and the power leads to the glow plugs, to allow ANY voltage under 11.5 vdc, but allow no more than 11.5 vdc, regardless of how much higher the ...
Herbert's user avatar
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