Tag: electronics hobbyists
Low Voltage PIR Sensor Power Reference – A Quick Fix for Engineers and Hobbyists
The Problem : When working with low-voltage PIR (Passive Infrared) sensors, a common issue is the sensor not receiving enough power, leading to malfunctioning or no operation at all. This happens when the power supply doesn’t match the required voltage or current specifications of the sensor. The Solution : To fix this, …
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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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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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Low Voltage Mesh Network Power Supply – A Simple Fix for Hobbyists & Engineers
When building low voltage mesh networks for IoT projects or home automation systems, one common challenge is ensuring a reliable and consistent power supply for all your devices. A power supply that doesn’t meet your needs can lead to issues like unstable connections, reduced range, or unexpected device failures. But don’t worry, the fix is …
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SMPS Input Capacitor Selection: A Beginner’s Guide for Electronics Enthusiasts
When working with Switch Mode Power Supplies (SMPS), one key component that plays a crucial role in ensuring your circuit’s stability is the input capacitor. In this guide, we’ll walk you through the importance of this component, how to select the right one, and show you a simple calculation to make this process easier. …
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Low Voltage Raspberry Pi Power Guide: A Simple Fix for Your Projects
Raspberry Pi boards are an essential tool for hobbyists and engineers, but low voltage issues can cause unexpected shutdowns and crashes, which is frustrating for anyone working on a project. The problem usually arises when your power supply isn’t providing enough voltage or current to the Raspberry Pi. Typically, Raspberry Pi models require 5V and …
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Reverse Voltage Protection with Zener Diodes: A Simple Fix for Your Electronics Projects
When building circuits, one common issue is reverse voltage—when power is connected to a circuit in the wrong direction. This can cause components like ICs or microcontrollers to burn out, leaving your project in ruins. Fortunately, reverse voltage protection is easy to implement with a Zener diode. A Zener diode allows current to flow in …
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Reverse Polarity Protection for LED Systems – A Simple Fix for Electronics Hobbyists
When working with LED systems, one common issue is accidentally reversing the polarity. Simply put, LEDs are polarity-sensitive components, meaning they only work if the positive and negative connections are correctly aligned. If you wire them backwards, they won’t light up and could even be damaged. The Problem : Imagine you’re building a …
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Reverse Voltage Protection for Audio Circuits: A Simple Guide for Electronics Enthusiasts
As an electronics enthusiast, you’ve probably faced the dreaded issue of reverse voltage causing damage to your audio circuits. When the polarity of your power supply is accidentally swapped, it can instantly fry components like op-amps, transistors, or even your entire circuit. This problem can be costly and time-consuming, but there’s an easy way to …
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