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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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How can "RYU Weld Machine Inverter 120A IGBT 450 watt" be advertised so? Does it really output less than 4V? How is such a rating determined?
Nonok cantik's user avatar
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2 answers
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I bought a well-made Chinese charger for our Zoe ZE50 R110 electric vehicle. It can be set to various charging levels (8,10,12,16A at 220V), but as a safety (I guess), the procedure requires me to ...
MoonCactus's user avatar
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1 answer
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I need help with the math that is glossed over in nearly every explanation I can find on the web. I have a transformer with a toroid core and primary that were professionally assembled and rated at ...
40150JD's user avatar
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1 answer
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How are PCBs that handle ultra-high current designed? For example, there are IGBTs on Digi-Key that are rated at > 200 A and can be soldered onto a PCB. How do those parts get utilized? Wouldn't ...
RGB Engineer's user avatar
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I have a constant 14 VDC source and I want to get a constant regulated output of 11 VDC regardless of the load current, knowing that the load is varing from 8 to 20 A with low frequency. What is the ...
Marko Turner's user avatar
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13 votes
6 answers
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I need to measure current going through my PCB, which can be anything between -1200A to +1200A. Accuracy within 1-2% with bandwidth of anything higher than 50kHz. The conductor is decided by now - I ...
TQQQ's user avatar
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4 votes
3 answers
614 views

I am looking to size several fuses' breaking capacities on a battery circuit. Let's consider F1 = 300 A; F2 = 20 A; F3 = 40 A. Given the battery is high-power and can output several kAs, the main fuse ...
VoltsAndNuts's user avatar
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7 votes
6 answers
3k views

Using a calculator like this one I see that the trace width required for 10 A is 9.36 mm at 2 oz (highest JLCPCB offers). My IRLZ44N transistor has 2.54 mm spaced legs, so how does putting two 10 mm ...
php_nub_qq's user avatar
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Let's say I have a 7.4 V Li-ion battery that I boost-converted to 36 V, and I have a 36 V Li-ion battery. I want to know if a charged capacitor from a boost converter would release energy like a ...
Vely's user avatar
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1 answer
934 views

I am trying to make a WiFi switch using the ESP32 MCU. The PCB I am building will be switching high-power applicances, such as a kettle (which can draw around 14 A @ 230 VAC). The relay I chose is the ...
JoeyB's user avatar
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1 vote
1 answer
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I would like to have a switch to select the operation mode of the DC motor (half speed / full speed). The DC motor is 12V 1000W. Is there a more simple way than using a speed controller (h-bridge)?
Gnioco's user avatar
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The image below is a 680uH and 4A inductor: Can I use 5 of them in parallel to make a boost converter which has input current of 15A and inductance of 136uH. The converter is made of discrete ...
CaveScientist's user avatar
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I am working on a new project that will be mounted on my racing car. I have to make a power distribution module using e-fuse and high switch modules to control the various loads. Exaggerating, they ...
Nik_01's user avatar
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2 answers
1k views

I have a motor whose speed I wish to control using PWM. The starting current is 11 A and the normal current is 3 A, with a rated voltage of 22 V. I want to find a PWM controller with an output current ...
HFOrangefish's user avatar
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2 answers
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I need help on how to reduce this ripple at the output of my converter. I already have a 1uF x8 capacitor at the output, butI am still getting loads of noise. Can you help with the best method to have ...
ikenna's user avatar
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I have a uniquely designed motor for a milling machine (expensive to replace and to purchase at a lower voltage). What I want to do is purchase a 575 V primary, 220 V secondary 3p used transformer, ...
TRC's user avatar
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1 answer
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I have an induction motor with the specification of 72V rated voltage and 65A of rated curent. I have power supply with 72V and 100 A of current. Can I use it to move the motor? The peak curent of ...
Houssem Ouni's user avatar
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2 answers
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Note: I am not talking about a circuit breaker where a spring is used to counter the repulsive force generated by current passing through a small contact area. This question is about switches designed ...
user146021's user avatar
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I have a 4-layer PCB with GND and power planes and on the top and bottom layers I have 220 VAC with 10 A currents. I have many questions about every part of this board but the most important ones are: ...
ashkan javan's user avatar
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3 votes
4 answers
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Story Get my hands on two Metabo (made in Germany) cordless DC battery powered hand drills previously thrown away because of..... the batteries, how sad. The overall construction is simple however ...
Codebeat's user avatar
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0 answers
536 views

I'm designing a BMS with up to 30 A, and I'm wondering about using thermal reliefs or solid connections for the PTH pad. The pad is connected to two copper planes on the top and bottom layers.
hafedh boughdiri's user avatar
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3 answers
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Is a 2-layer PCB design good for a 100 A or more current carrying PCB, or should I switch to 4 layers? The trace lengths are from 20mm to 50mm. Also, can anyone give some suggestions on it.
Ashesh Rai's user avatar
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2 answers
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Very new to the world of electronics so forgive any ignorance here. I'm trying to control a hydraulic actuator that takes a 0-12V input signal. I'm using an ESP32 to give me a 3.3V PWM signal. ...
Ursius's user avatar
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1 vote
2 answers
721 views

I have high-current devices (10 A) of variable resistance and I am researching their current-voltage behavior over time. I want to operate several devices in series using only a single power supply ...
Wilhelm's user avatar
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0 votes
2 answers
87 views

I am looking to model a HV pulse generator that involves discharging a 6 μF capacitor at about 300 V across the primary coil of a transformer. This discharge happens about once every 1.5 seconds. The ...
Smitty Flufferson's user avatar
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1 vote
2 answers
538 views

I'm currently simulating my high- side current sense amplifier for measuring mains current(along with the LP filter) .I also have the voltage sensing in the corner and I have attempted to simulate a ...
hellowurf's user avatar
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1 answer
67 views

I have used LP3961 3.3V regulator cicuit for my STM32 microcontroller circuit. I have implemented low power stop mode in STM32. Micro controller consumed 25uA itself. When I Measured the current ...
Ragavan Ragav's user avatar
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3 votes
2 answers
3k views

I have recently taken interest in laser diodes, and I would like to drive one of them (NUBM08) without destroying it. Looking over the internet I learned there are many devices one can build to do ...
RandomGuy's user avatar
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2 answers
202 views

No specific application, just for interest - I opened up a multiplug/multiboard and noticed that all the contacts for welded (i.e. no solder). I was just wondering if this had anything to do with ...
Patrick Rynhart's user avatar
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3 votes
1 answer
315 views

R1=15kΩ R2=40kΩ R3=40kΩ E=4V VI--> -8V<VI<8V. In this circuit, diodes D1 and D2 are the same model 1N4007 diodes. (Is=7.02767E-09, VJ=0.7) When I assume that D1 is on and D2 diode is off, ...
umutcankalayci's user avatar
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1 vote
1 answer
305 views

I tried to use IGBT (skm400ga-12t4) to do fast current switching of circuits with an inductor. The gate driver used adum4121-ARIZ and gate driving was performed by making a same circuit to the example ...
JangByeongJoo's user avatar
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1 vote
1 answer
370 views

I am currently in the process of building a quadruped robot that uses 12 SG90 servos, controlled by a PCA9685, for motion. I've found many examples of quadrupeds, but barely any mention of their power ...
helo's user avatar
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-2 votes
1 answer
493 views

I have PCBs located just below the high-powered DC cable at 50A 48V. My PCB has input-output from 5V signal cables from all over the place. The 5V signals are for: 12V and 5V Signal driving the EM ...
calvinglob's user avatar
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2 votes
0 answers
91 views

I have a multi-process welder that can do TIG, but only with a lift start and a manually opened and closed gas valve on the torch, with no option for a foot pedal. I am planning on adding a foot pedal ...
Ehryk's user avatar
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1 vote
1 answer
752 views

I built a circuit based on the INA128 which for some reason heats up rapidly. The test setup is like the image below. The output is left unconnected, no input signal. I get around 550mV voltage drop ...
widis's user avatar
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0 votes
2 answers
61 views

I am tasked with the design of a board that needs a buck regulator. This regulator will work on low voltages (Vin ~= 12V, Vout ~= 4V), but high output current is required (> 60A). I decided to use ...
Fotis Panagiotopoulos's user avatar
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125 views

I am currently working on a system that requires: Board to board connector for high current applications. This operates at approximately 44v. Expected currents: 200A, with burst up to 300A Expected ...
Mayur_Redwing's user avatar
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0 votes
0 answers
149 views

Hello I need to drive resistive load of 0.25 OHM. I have 24V 100A power source available. I use computer to measure operating conditions, but as response I need to control current and by this ...
Peter Novotny's user avatar
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1 vote
1 answer
351 views

I've been having some difficulties trying to design a closed loop, current pulse control system that controls a capacitor's discharge to an inductive load. The basic operating principle is that there ...
TurboChad's user avatar
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2 votes
2 answers
674 views

I am looking for ways to break a high voltage DC power line when an overheating scenario occurs. Preferably I would like to do so using a thermal fuse but can’t find any thermal fuses rated for high ...
LukasL's user avatar
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0 votes
0 answers
197 views

My concerns are how to successfully hand solder a double-sided, 4oz copper PCB. The plated-through holes in the board have no thermal reliefs and are attached to the power and ground planes. The board ...
Tom Murphy's user avatar
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0 votes
0 answers
579 views

I have recently taken over for a guy who retired from my company and I am working on getting a prototype that he designed back in 2016 up and running. We are using two 3.6 V 18650 batteries to power ...
fillauerproton's user avatar
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-1 votes
1 answer
567 views

I have been working on a coil gun but am having trouble with the firing mechanism. My coil gun capacitor bank supplies 400v and instantaneous current of 666 amps based on the resistance of the coil. ...
Christian's user avatar
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-1 votes
1 answer
149 views

My goal is to wire up this LED indicator light so that when the DPST toggle switch is closed (ON), the LED will turn on. I have 30V LEDs that I can use that will use 20mA. However, this LED will be ...
Wiio's user avatar
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0 votes
1 answer
157 views

My goal is to add two toggle switches to high power DC lines so that I can break the circuit and stop power from being delivered to my load. This load will be using 28V, ~27A. I have an two channel ...
Wiio's user avatar
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2 votes
4 answers
1k views

I need to add a secondary means of cutting off power to a motor for safety reasons if a state change is detected on a 3.3V logic level signal while it is operating. The requirement I have is that it ...
Christian's user avatar
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0 votes
3 answers
723 views

Just wondering if you guys have any recommendations for low voltage, high current pulsed power supply designs. The current required is 300A for a 0.14mH inductive load with 0.088Ω of resistance. The ...
TurboChad's user avatar
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1 vote
0 answers
71 views

I have four 200 Ah batteries that I am using to drive two separate really high current loads. The first load is 12 V at around 400 A and the second is 48 V at around 120 A. I was wondering if I could ...
Frozo's user avatar
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2 votes
0 answers
410 views

i bulid ESC circuit based on TLP250 gate driver and IRF3205 MOSFET ,My motor works with 5V and consume about between 6 A and 8 A. the ESC circuit works well over month with software PWM frequency = ...
0ussama's user avatar
  • 141
1 vote
1 answer
388 views

I am working on a 4-layer PCB where an electric current of 40 A - 12 VDC needs to pass through 2 traces (for 2-3 cm) between two through-hole components, for 1 minute every hour. 200 units of the ...
JackOfHearts's user avatar
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