Questions tagged [high-current]
Say how much current is required, high-current means different things to different people.
493 questions
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How to switch a 12V power supply with 3.3V
I am working on a project where I need to switch on/off the power supply for 8 high-power servos like this one using a Raspberry Pi's GPIO pins, which work with 3.3V logic, but how can I do this?
I'd ...
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Routing Under Current Sensing Resistor
I am making a layout for the motor driver TMC2208-LA-T, and I found it beneficial to route the power (12 V/1.5 A) under the current-sensing resistor, as shown in the picture below. The resistor value ...
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High Voltage Shock Safety in Electroadhesion
I am working on an electroadhesive for a project this year, and I need to find some sources that I can cite for the safety of the high voltages involved.
The high voltage converter that I was going to ...
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Best Buck converter topology for high power charger?
I am designing a buck converter for a lead acid battery with an output current of 135 A and voltage from 108 V to 142 V in different CC and CV stages.
The input voltage is 165 V from a Vienna ...
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Is current booster for LM78xx valid for any Linear regulator?
The classical current booster for LM78xx/LM317 series is the use of a BJT in this way:
Source
I understand the principle of how it works. However, I have a doubt: can this work with any linear ...
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High Voltage PCB for Electromagnetic accelerator / Coil-gun
I've been working on a coilgun/electromagnetic accelerator/Gauss cannon for the past few weeks, and I'm having serious trouble building a real physical circuit to test my coils. I'm charging the ...
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Should I use tracks or copper pour for mains line connection between two points?
I am designing a relay PCB for an application rated upto 16A. The space is a constraint for me so for better connection, I used a copper pour for the line on the top layer and neutral on the bottom ...
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Trace width calculator, current values shown
If I use a trace width calculator to find out the width of copper I would need for a specified current. Now for my situation I need 120-150A of current (peak), 40 - 50A continously. I am using a 4 ...
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PCB trace width compared to wire gauge
If I have an application that takes 50A DC continuous, then the wire that I have to use 3 or 4 AWG wire. But on a PCB it is enough to use a 1 oz / sqft 70 mm width trace/polygon plane (KiCad trace ...
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Current limiting device on solar system [closed]
I have an inverter that has charger controller inside, & the designers of the whole solar system overlooked current parameters. The current from the solar panel to inbuilt charge controller is ...
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Mounting Hole Grounding Strategy for High-Current PCB With AC Earth and DC Ground
I'm working on my first PCB that integrates both an AC source (with protective earth/PE) and a DC ground plane (GND). This board is designed for high current (up to 10A), so good layout and grounding ...
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Does hot melt glue damage wire insulation?
I'm planning to use hot melt glue to seal gaps in circuits to prevent short circuits. For example, one application where I might use it is fuse box (which might not be a good idea since cooling ...
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What's the best affordable option for a low voltage high current power supply? [closed]
A specific component (hydrogen electrolyzer) requires 3.5-5V and 8-9A.
D-cells drain fast and are not an efficient battery pack for this component.
What are the options to deliver the specific voltage ...
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Multiplexing large pulses
I’m working on a PCB at the moment which has a pulse generator which generates 20 V, 1 μs pulses. I need to send this pulse to many different endpoints on the board which will each pull between 20 mA ...
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DCM Flyback Design secondary peak current is too high
I've started studying power electronics and am currently designing a 45W flyback converter with a 15V, 3A output. The input voltage can vary widely, from 20V to 120V. I'm following classical flyback ...
