Questions tagged [over-current]

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Over Current/Short Circuit Protection Using op-amp and MOSFET

I wanted a circuit to limit the current to say 4A, and found this but it doesn't work in the Proteus simulator. What's wrong with this circuit? anyways to improve it? here is my expectation of the ...
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Half-bridge driver IR2101 shorting high side and low side (In a weird condition)

I am making my own FOC BLDC driver, but there is a weird problem when I control the gate driver using PWM. I am using three IR2101 driver IC to drive the six N-FETs, and I am using an STM32 (Blue pill)...
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Linear Power Supply - Overload Protection Circuit

Summary and Context: Several years ago I bought a linear power supply from Pyramid, model PS-3KX. I would like to understand in detail how the "OVER-LOAD PROTECTION" really works, as said ...
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protect from in rush current of buck convertor

I made a PCB base on the following schematic, it uses a buck convertor for 12 to 5 v and then uses an LDO for 5 to 3.3 to run my ESP module I use 2 P-channel MOSFET for polarity protection , but ...
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  • 129
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3 answers
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DC over current protection idea needed for step down converter input

I ride an electric motorcycle which is powered by a 26s 96V Li-ion battery. It has regen braking that charge the battery with 50A current. All the lights are powered by a 60v-120v to 12V 15A DC step ...
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18650 Li-ion cell protection tripping at super low currents (~1 mA)

I recently bought a 3.7 V lithium-ion cell to replace an old 3.6 V NiCd one in a handheld vacuum cleaner. I am aware that Li-ion cells don't handle current surges nearly as well as NiCds do, and for ...
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-1 votes
1 answer
205 views

What will happen if I use RCBO where there is no neutral in the system?

I need some help. Could you please go through the scenario and try to answer my query below? This system is installed in a ship where there is no neutral connection available. A 440V/220V step-down ...
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Transformer secondary conductor protection: how do NEC 240.21(C) and NEC 240.4(B) make sense together?

NEC 240.21 says all ungrounded circuit conductors require overcurrent protection, with a list of exceptions: One of those exceptions is 240.21(C): 240.4(B) says that if you're under 800 amps, you ...
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1 answer
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USB hub IC overcurrent Pin: active LOW or active HIGH?

I am using USB2517 - USB 2.0 Hi-Speed 7-Port Hub Controller IC to make a USB 2.0 hub. What I do not understand (or its missing from the IC's datasheet), is Pins OCS[7:1]_N, which are "Input from ...
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