A battery free emergency power generation source

 ■ Aim:

A battery free emergency power generation source

■ Apparatus:

1. Bread board

2. Gear Motot

3. Super Capacitor

4. Diode

5. LEDs

6. Resistor

7. Bouster Module

8. Voltmeter

9. Voltage regulator

10. charging module

■ Theory:

The project uses a gear motor as a generator to produce electricity.

Instead of batteries, supercapacitors are chosen to store energy because they can charge and discharge rapidly and store more energy than normal capacitors. Three 2.7-volt supercapacitors are connected in series to create an 8.1-volt pack.

A diode is installed between the motor and capacitors to prevent the motor from continuously spinning due to reverse voltage from the capacitors and to block reverse voltage if the motor is accidentally rotated in the wrong direction.

Three LEDs are used and connected in series for illumination.

A charging output socket is used to charge sertain level of electronic appliances To maintain constant brightness of the LEDs as the voltage decreases, a booster module is used.

When the voltage drops below certain volts, the LEDs might start blinking because the module doesn't receive enough minimum voltage and current. To ensure a stable glow, an additional capacitor is added.

A resistor is included for current limiting to increase the lifespan of the LEDs.

A voltmeter is used to monitor the voltage.

■ Circuit Diagram: