Tag: MOSFET
Reverse Current Protection for Batteries: A Simple Guide
Reverse current is a common issue in battery-powered circuits where current flows back into the battery when the power source is disconnected or reversed. This can damage batteries, lead to overheating, or even cause a short circuit. Fortunately, you can prevent reverse current easily using a Schottky diode or a P-channel MOSFET in your circuit. …
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Mastering MOSFET Switching Frequency for Better Efficiency
The Problem : Choosing the wrong switching frequency in a MOSFET circuit can cause excessive heat and power loss. High frequencies increase switching losses, while low frequencies make the circuit inefficient. The Solution : To select the right switching frequency: Identify Load Requirements: Check voltage and current demands. Evaluate MOSFET Specs: Focus …
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MOSFET Gate Drive Power Supply: A Beginner’s Guide to Solving Common Issues
The Problem : When working with MOSFETs in your projects, one common issue is insufficient gate drive voltage. MOSFETs require a specific voltage level to switch fully on. If the gate drive power supply isn’t delivering enough voltage, the MOSFET may not switch properly, leading to inefficient performance, overheating, or even failure of the …
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SMPS Thermal Modeling Techniques: A Beginner’s Guide
Power Supply Units (SMPS) are vital for powering electronics, but managing heat is crucial to ensure their longevity and efficiency. As an electronics hobbyist or engineer, understanding SMPS thermal modeling can prevent costly mistakes. Let’s break it down simply. The Problem : SMPS units, when running high power, tend to generate a lot …
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MOSFET Safe Power-Up Sequencing
When building electronic circuits, especially with MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors), it’s crucial to follow a safe power-up sequence. Without it, you risk damaging your components due to incorrect voltage application. In simpler terms, applying power in the wrong order can lead to MOSFETs turning on unexpectedly or other delicate components getting fried. The Problem …
SMPS Voltage Drop Mitigation: Easy Fixes for Hobbyists and Engineers
When working with Switch Mode Power Supplies (SMPS), you may encounter an issue known as voltage drop. This happens when the voltage supplied to your circuit is lower than what it should be, often due to components like capacitors or wiring causing resistance. For electronics hobbyists, engineers, and prototypers in India, understanding and fixing voltage …
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MOSFET Noise Immunity Tips for Beginners
When working with MOSFETs in your electronic circuits, you might encounter unwanted noise or interference. This can cause erratic behavior, like unexpected switching or malfunctioning. It’s a common issue that can easily be fixed with the right approach. The Problem : MOSFETs are sensitive to noise from power lines or nearby components, especially …
MOSFET High-Side Driver Design – A Beginner’s Guide
When designing electronic circuits, one common challenge you might face is driving MOSFETs, especially in high-side applications. Simply put, a high-side driver is needed when you want to switch a load between a positive voltage and ground, but the MOSFET needs to be placed on the high (positive) side of the load. The Problem …
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Reverse Protection with Active Rectifiers: Simple Fix for Common Circuit Issue
As electronics hobbyists, engineers, and prototypers, we often encounter the issue of reverse voltage—when the polarity of the power supply is accidentally flipped, damaging our circuits. This is where reverse protection comes in, and active rectifiers offer a reliable solution. The Problem : When power is reversed in a circuit, components like diodes …
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MOSFET Current Limiting Techniques for Electronics Enthusiasts
The Problem : When working with MOSFETs in your electronic circuits, one common issue is the risk of excess current, which can damage your components, particularly MOSFETs, LEDs, or other sensitive devices. Without proper current regulation, the MOSFET can overheat, burn out, or lead to circuit failure. Managing current flow is essential to ensure …
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