
In the fast-paced world of robotics prototyping, one simple mistake—reversing power supply polarity—can fry your entire circuit. For Indian electronics hobbyists and engineers, reverse voltage protection is a must-have safety feature in any robotics project.
The Problem: Reverse Polarity Damage
Accidentally connecting the power supply the wrong way is common, especially in DIY robotics. When reverse voltage is applied, sensitive components like microcontrollers, motor drivers, and sensors can get permanently damaged.
The Solution: Add a Simple Protection Circuit
The most beginner-friendly fix is placing a diode in series or a P-channel MOSFET across the power input. A diode blocks reverse current flow, while a MOSFET offers lower voltage drop and higher efficiency for more advanced builds.
Practical Example: DIY Line Follower Robot
You’re wiring up a line follower robot and mistakenly reverse the battery connection. Without protection, your motor driver IC could be toast. But with a Schottky diode in series with the power line, the reverse current never reaches your components.
Sample Calculation: Diode Voltage Drop
Using a Schottky diode with a 0.3V drop and drawing 500mA:
P=V×I=0.3V×0.5A=0.15W
Make sure your diode can handle that power dissipation without overheating.
Product Suggestion: Diodes & P-Channel MOSFETs
Prevent damage before it happens! Use Schottky diodes or P-channel MOSFETs, all Made in India and perfect for robotic projects.
Shop now at SmartXProKits.in.
Support our work and India’s innovation—buy from our Make in India site!
Written by smartxbrains
- Industrial Automation141141 products
- Cooling Fan44 products
- Indicators1111 products
- Plastic Casing66 products
- Sensor2323 products
- Sleeve and cables55 products
- SMPS88 products
- Solid State Relay Module22 products
- Switches1818 products
- Temprature Sensor11 product
- 3D Printing180180 products
- 3D printing110110 products
- Combination Kit4747 products
- Electronic743743 products
- Audio55 products
- Battery/Charger Accessories2828 products
- Capacitors6464 products
- Connector4646 products
- cooling fan11 product
- Diode3535 products
- Displays1212 products
- IC and Chips6565 products
- IOT and Wireless99 products
- Leds2424 products
- Microcontrollers55 products
- Modules/Shield7575 products
- MOSFET / IGBT1414 products
- Power Supply2525 products
- Resistors130130 products
- Sensors5959 products
- SMD2828 products
- Switches1414 products
- Transistors6868 products
- Wire and Cables1212 products
- Hardware3232 products
- Hand Tools1414 products
- Hardware Accessories1414 products
- Printing22 products
- RC Plane and Drone99 products
- Robotic147147 products
- BO Motors1313 products
- General Purpose DC Motors2929 products
- Motor Drivers88 products
- Robotic Wheels & Tyres1414 products
- Servo Motor2727 products
- Stepper Motors88 products
- Synchronous Motor11 product
- Science Fair Project7070 products
- Final Year Ready Project Kit11 product
- STEM KIT2222 products
- E Books88 products
Leave a Reply
You must be logged in to post a comment.