⚠️ The Problem :

Parking sensors are essential for modern vehicles, but many run on 5V logic while the car battery provides 12V or more. Without proper voltage regulation, sensors can overheat or fail, especially during engine cranking when voltage drops below 10V.

✅ The Solution :

To safely power your parking sensor, use a Low Dropout Regulator (LDO) or a buck converter. These components convert 12V to 5V efficiently—even when input voltage drops close to 6V during cranking.

🚗 Practical Example :

You’re building a DIY reverse parking sensor for your car. The sensor requires 5V, but during ignition, your car’s voltage dips to 9.5V. A buck converter ensures the 5V rail remains stable so your microcontroller doesn’t reset.

📐 Sample Calculation :

Assume your sensor draws 200mA at 5V.

Power = V × I = 5V × 0.2A = 1W

Using a buck converter with 90% efficiency:

Input power ≈ 1W / 0.9 = 1.11W,

which translates to ≈ 93mA from 12V. That’s efficient!

🛒 Product Recommendation :

Use trusted Made in India parts:

• [Buck Converters]

• MOSFETs for power switching

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