Questions tagged [protection]
Ancillary circuitry that protects the main circuitry in case of a fault. Examples of faults protected against are: overvoltage, ESD, overheating, and overloading (too high of a current draw). In some cases the protection circuitry is sacrificial, being destroyed or degraded in the act of protecting.
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Protection still adequate?
I'm trying to protect an analog input (that goes through a MUX and a buffering op amp). Expected input frequency is less than 10 Hz.
I would like to go from the top schema to the bottom one.
LDR/...
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How to protect a motherboard from an old power supply? [closed]
I have an old Taiwanese Senstron ST-41 (TAO YIN-TCY6 94V) power supply from 1987 used in an Apple 2 clone with DC outputs:
5V 5A
12V 2.5A
-5V 0.5A
-12V 0.5A
Is it possible to add extra protection (...
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Does it matter if a fuse is on a positive or negative voltage?
I have a power supply with -5V DC output.
Can I use a fuse 5V 0.5A for this -5V rail as if it was 5V 0.5A?
The rail I want to put a fuse on goes into the motherboard.
The motherboard does not have any ...
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Type of diodes for 9V [closed]
I am looking to protect a 9v battery against a 12v battery.
I know the question has been asked already and someone did put a circuit up as well but I don’t know what type or what model number I need ...
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Jump on varistor I/V curve when "passing" through max. leakage current region to max. clamping voltage region?
I'm taking a course on semiconductor physics and another on something like "usage of electronic devices". On both I've come across the I/V curve on a varistor, this is:
I cannot find the ...
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Modelling a Desaturation detection circuit on LtSPICE
I am trying to model a gate driver desaturation detection mechanism with discrete elements on LTSpice. The waveforms I have obtained now provide a constant Vdesat of about 5.6V when MOSFET is turned ...
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Ensuring Proper Damping and Protection at Power Connector Inlet
I am designing a power input stage for a system (which consumes up to 90W) and want to ensure it is properly damped and protected. Here are the components and considerations I have incorporated so far:...
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How can I protect a DC/DC converter when VIN is floating?
I'm using a L6902 (https://www.st.com/resource/en/datasheet/l6902.pdf) to charge a 4 cell lifepo4 pack (with a solid BMS).
Do I need a diode on the converter output (PACK+) to prevent the converter ...
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Well protected digital input with long wires
I've created simple circuit to protect MCU's digital input against eg. induced spikes. I want to connect quite long wires to this HW and highly probable that this board will be placed close to the ...
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High-Side NMOS Short Circuit Protection: How to Calculate Maximal Allowed Turn-off Time?
I'm about to build a high-side MOSFET switch that can switch voltages up to 150V to an external load (0.5A nominal).
For this application I would like to use the N-Channel MOSFET Vishay SiHH240N6E.
...
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Troubleshooting a Low Voltage Cutoff (LVC) Circuit for Overdraining Prevention
I am attempting to design a Low Voltage Cutoff (LVC) circuit to safeguard against overdraining my 12V rechargeable battery. The objective is to halt circuit power once the battery voltage drops below ...
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Ideas for protecting an sEMG system from external problems
I am designing a pcb to work as a human-machine interface. Here is the simplified schematic:
The idea is to connect a custom sEMG acquisition system to esp32 and also a pcb to control vibrotactile ...
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Will voltage at the inputs/outputs destroy an unpowered opamp?
I have a circuit powered by 12V that accepts an input signal of 0V to 10V. The circuit shall act as a buffer to the signal, with an added LED indicator. In certain circumstances, the circuit itself ...
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Protection circuit for a 12 V Li-ion battery pack
Is there an integrated circuit or a conventional circuit topology to monitor edge conditions of a 12 V battery pack without measuring individual cells within that unit?
A conventional BMS or battery ...
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3 pin Gas Discharge Tube (GDT) - pinout order
I would like to know the reason behind the pinout order of a 3 pin GDT.
GDTs are designed to prevent damage from transient disturbances by acting as a “crowbar” in creating a short-to-ground circuit ...
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