Tag: Prototyping
MOSFET Gate Driver Isolation: Why It’s Essential and How to Fix It
The Problem : When using a MOSFET to control high-power loads like motors or LEDs, the gate needs to be driven correctly to ensure fast switching and prevent damage. However, without gate driver isolation, voltage spikes or noise from the load can feed back into the control circuit, potentially damaging the microcontroller or Arduino. …
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Low Voltage BLE Beacon Power Supply
Low voltage BLE (Bluetooth Low Energy) beacons are widely used in IoT projects, smart homes, and proximity-based applications. However, ensuring a stable power supply is crucial, especially when using coin cell batteries or low-power sources. A fluctuating or weak power supply can shorten the beacon’s range and affect its reliability. The Problem : BLE …
SMPS Burst Mode Design Guide for Prototypers and Engineers
The Problem : Switch Mode Power Supplies (SMPS) often operate in burst mode to improve efficiency at low loads. However, burst mode can cause unwanted noise and instability if not managed properly. This occurs when the controller reduces the switching frequency to conserve energy, but excessive bursts can create ripple and EMI issues. …
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Reverse Protection in Medical Devices: Simple Fix for Safe Prototyping
Medical devices need reliable protection from reverse polarity, which occurs when power supply connections are accidentally reversed. This mistake can damage sensitive electronics, making reverse protection essential for safe and effective operation. The Problem : When a device’s positive and negative terminals are swapped, current flows in the wrong direction, potentially damaging circuits. …
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SMPS Over-Power Protection Guide: A Beginner’s Solution
Switch Mode Power Supplies (SMPS) are commonly used to power electronic circuits, but they can get damaged if overloaded. Over-power protection (OPP) prevents this by limiting the power drawn by the load, ensuring the SMPS operates within safe limits. Without OPP, excessive power can lead to overheating, damage, or even component failure. The Problem …
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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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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 …
Low Voltage Smart Speaker Power Design: A Beginner’s Guide
The Problem : When working on a low voltage smart speaker project, one common issue is an unstable or insufficient power supply. This problem often occurs when the power source can’t provide enough current to run the speaker consistently. As a result, your smart speaker may not function correctly or may turn off unexpectedly, …
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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 …
SMPS Input Filter Design Guide: A Beginner’s Approach
When designing a Switched-Mode Power Supply (SMPS), one crucial aspect that often gets overlooked is the input filter. This filter is essential for smoothing out any voltage spikes or noise from the power source, ensuring that your circuit gets stable power. Without an input filter, you might face issues like erratic behavior, noise, or even …
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