Tag: Made in India
Reverse Protection for Power Tools: Prevent Damage Easily
The Problem : Reverse polarity happens when power tool connections are accidentally reversed, causing serious damage to internal circuits. For hobbyists, engineers, and prototypers in India, this can mean burnt-out components and costly repairs. Fortunately, protecting against reverse polarity is easy with the right components. The Solution : The simplest solution is to …
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SMPS Component Derating Guide for Indian Prototypers
The Problem : When designing a Switched Mode Power Supply (SMPS), component derating is essential to ensure reliability and longevity. Derating means using components below their maximum rated limits to avoid overheating and premature failure. For example, if a capacitor is rated for 50V, operating it at 40V or lower improves durability. The …
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MOSFET Switching Ripple Reduction: Easy Fix for Smooth Operation
The Problem : MOSFETs are widely used in switching circuits, but they often introduce voltage ripple or noise due to rapid switching. This ripple can affect sensitive components and reduce overall circuit efficiency. Ripple occurs when the MOSFET switches too fast, causing unwanted high-frequency oscillations. The Solution : A practical fix to …
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Low Voltage Touch Sensor Power Design: A Beginner’s Guide
The Problem : Touch sensors are commonly used in DIY projects and industrial automation to detect user interaction without mechanical switches. However, ensuring that a touch sensor works efficiently at low voltages (3.3V or 5V) can be tricky. When the voltage is too low, the sensor may not trigger properly, leading to inconsistent results. …
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Reverse Protection for Automotive ECUs: A Simple Fix for Beginners
The Problem : Automotive Electronic Control Units (ECUs) manage essential vehicle functions. However, accidental reverse polarity during connection can damage these sensitive circuits. Reverse polarity occurs when the positive and negative terminals are swapped, leading to burnt components or permanent failure. The Solution : A simple and effective solution is using a …
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MOSFET High-Efficiency PWM Design for Beginners
The Problem : When designing a PWM (Pulse Width Modulation) circuit, choosing the right MOSFET ensures high efficiency and minimal heat loss. A common problem arises when using a MOSFET with a high gate threshold voltage. If the gate is not fully driven, it operates in the ohmic region, leading to heat buildup and …
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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MOSFET Current Mirror Circuits: A Simple Guide for Beginners
The Problem : A MOSFET current mirror is a circuit used to copy (mirror) a current from one branch to another, ensuring consistent current flow in different sections of a circuit. This is crucial in amplifiers and sensor circuits where stable current is essential. However, beginners often face issues with incorrect resistor values or …
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Low Voltage Industrial Sensor Power Design: A Beginner’s Guide
Industrial sensors such as proximity sensors, temperature modules, and IR detectors often operate at low voltages (3.3V or 5V). However, if the power supply is unstable or noisy, these sensors may malfunction, leading to inaccurate readings or total failure. The Problem : Many hobbyists and engineers connect sensors directly to a microcontroller’s 3.3V …
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