Tag: MOSFET
MOSFET Gate Resistor Tuning – Control Your Switching
When designing fast-switching circuits with MOSFETs, one often overlooked but crucial part is the gate resistor. Tuning it correctly improves efficiency, reduces EMI, and extends component life. 
The Problem: Uncontrolled Switching and EMI Without a gate resistor, a MOSFET can switch too fast, leading to: High voltage spikes (ringing) Electromagnetic interference (EMI) …
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Low Voltage Smart Thermostat Power – A Practical Guide
Smart thermostats are becoming common in Indian homes and offices—but powering them safely and efficiently at low voltage is a challenge many DIYers face. The Problem: Powering Thermostats with High Voltage Most smart thermostats work at 3.3V or 5V DC, but in many cases, the available input power is 230V AC. Direct …
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SMPS Component Placement Tips – Build Efficient Power Supplies
A poorly laid out SMPS (Switched-Mode Power Supply) can lead to noise, heating, or even failure. Whether you’re a hobbyist or prototyping for production, smart component placement is key to a stable design. The Problem: Noisy or Unstable SMPS Many beginners make the mistake of randomly placing components on the PCB. In …
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Reverse Protection in Power Supplies – DIY Safe Power
One small mistake—connecting power in reverse—can instantly destroy your circuit. But with simple reverse protection, you can prevent such disasters, especially in DIY projects and prototypes. The Problem: Reversed Polarity Damage When connecting a power supply, it’s easy to swap the positive and negative wires—especially in portable or plug-in circuits. This mistake …
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MOSFET Reverse Recovery Design – Made Easy for Makers
When designing fast-switching circuits, MOSFET reverse recovery can sneak in as a silent performance killer. If not addressed, it can cause heat buildup, inefficiency, or even damage. The Problem: Reverse Recovery in MOSFETs MOSFETs are ideal for switching, but in circuits with inductive loads (like motors or transformers), the body diode conducts …
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Reverse Polarity Protection for UPS – A Must for DIY Builders
The Problem : When working with uninterruptible power supplies (UPS), especially in custom or DIY builds, reverse polarity is a silent killer. Accidentally connecting the battery terminals in reverse can instantly damage MOSFETs, controllers, and other sensitive components. 
The Solution : Implement reverse polarity protection using a P-channel MOSFET or a Schottky diode. A …
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MOSFET Over-Voltage Protection ICs – A Practical Guide for Indian Makers
The Problem : Over-voltage events are common in DC-powered electronics—whether caused by unstable adapters, lightning surges, or faulty power supplies. Even a brief spike can permanently damage microcontrollers, sensors, and other sensitive components. 
The Solution : Using a MOSFET in combination with an Over-Voltage Protection (OVP) IC ensures your circuit automatically disconnects power when …
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Reverse Voltage Protection for Chargers – Simple Yet Essential!
The Problem : Ever accidentally connected a charger’s input wires in reverse? It can instantly damage your charging circuit or the battery. Reverse voltage protection ensures that your charger survives wiring mistakes without a meltdown. 
The Solution : The simplest method is using a Schottky diode in series with the …
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Reverse Voltage Protection for Chargers – Simple Yet Essential!
The Problem : Ever accidentally connected a charger’s input wires in reverse? It can instantly damage your charging circuit or the battery. Reverse voltage protection ensures that your charger survives wiring mistakes without a meltdown. The Solution : The simplest method is using a Schottky diode in series with the …
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MOSFET Thermal Shutdown Circuits – Save Your Circuit from Heat!
The Problem : When MOSFETs operate under high load or poor ventilation, they can heat up rapidly. If this thermal rise isn’t managed, it can lead to permanent failure or circuit damage. That’s where thermal shutdown circuits come in—they cut off the load when the MOSFET gets too hot. The Solution …
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