Solar Mobile Charger Circuit using 7805 IC | DIY 5V Regulator with LED Indicator

🌞 Solar Mobile Charger Circuit using 7805 IC | DIY 5V Regulator with LED Indicator

Description:
In this video, I’ll show you how to make a simple solar mobile phone charging circuit using a 7805 voltage regulator IC. This DIY project converts solar panel output into a stable 5V DC supply — perfect for charging your phone or powering USB gadgets!

We’ll also add a protection diode (1N4007), filter capacitors, and an LED power indicator to make the circuit safe and reliable.

⚙️ Circuit Components:

Solar Panel: 6V–12V, 1–2W

7805 Voltage Regulator IC

1N4007 Diode (for reverse current protection)

0.33µF (Input) & 0.1µF(Output) Ceramic Capacitors

220µF Electrolytic Capacitor (optional for smoothing)

LED (Red/Green) + 220Ω Resistor (power indicator)

USB Output Port

Wires, Breadboard or PCB

⚡ Circuit Working:

The solar panel provides DC voltage (5–12V).

The 1N4007 diode prevents reverse current flow when the sun is not available.

The 7805 IC regulates the voltage to a steady 5V DC.

Capacitors stabilize the voltage and remove noise.

The LED with 220Ω resistor indicates that the output power is ON.

Connect your USB port to charge your phone safely.

💡 Features:

✅ Simple & easy to build
✅ Uses easily available components
✅ Provides stable 5V regulated output
✅ Protects your solar panel and circuit from reverse current
✅ Works for small USB-powered devices and phone charging

⚠️ Important Notes:

For better efficiency, use a 6V–9V solar panel with at least 500mA output.

Add a heat sink to the 7805 for continuous use.

Don’t charge lithium batteries directly from 7805 — use a proper charger module.

🎬 Watch till the end for the complete wiring diagram and working explanation!

💬 Comment below if you have any questions or suggestions!

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