• Skip to main content
  • Skip to primary sidebar

Homemade Circuit Projects

Get free circuit help 24/7

Circuits for Beginners | Basic Circuits | LED Driver | Hobby Circuits | Transistor Circuits

New-Projects | Privacy Policy | About us | Contact | Disclaimer | Copyright | Videos

You are here: Home / Transmitter Circuits / Cellphone Charger Circuit Using Pendulum Generator

Cellphone Charger Circuit Using Pendulum Generator

Last Updated on August 2, 2019 by Swagatam 20 Comments

ask questions through comments

This pendulum electricity generator can be used in villages for charging cellphones free of cost just by applying momentary pushes to the pendulum frequently or as desired throughout the day.

Pendulum as Free Electricity Generator

In one of my previous articles I explained about the high efficiency value of a pendulum mechanism, and how it could be used for generating almost free electricity using a minimal input effort, in this article we'll learn how the same principle can be executed for charging cellphones free of cost.The following figure shows the basic set up which can be applied for charging cellphones free of cost.

Referring to the figure above, we can see a relatively simple set up consisting of a DC motor rated at 12V, 5amp (or any other specs depending upon the output requirement), a bridge rectifier, a few super capacitors and a 7805 IC voltage regulator.

Circuit Operation

The motor spindle is appropriately configured with a mechanical pendulum assembly consisting of a pulley and a shaft, the shaft has a heavy spherical mass attached with its lower end.

The whole system is appropriately clamped over a firm base using brackets and angles (not shown in the image)

The functioning of the proposed free pendulum cellphone charger is rather simple.

The spherical mass is kept oscillating by applying frequent flicks manually, which is repeated only while the pendulum system is about to come to a halt.

Being extremely efficient by its nature of functioning, the pendulum can be expected to oscillate for quite sometime with every push, generating precious electricity for the connected cellphones, charging them almost free of cost.

The super capacitors are added for ensuring maximum outcome, however any ordinary high value capacitor may also be used with effective results, such a a few 2200uF/25V would be just enough.

In order to achieve maximum efficiency and higher sustain rate of the mass, two things needs to be taken care of: 1) the weight of the attached mass and 2) the length of the pendulum shaft, both of these are directly proportional to the efficiency of the system.

Meaning if the mass is more heavy and/or the shaft is lengthier would result in greater efficiency from the system, ensuring lesser manual effort for keeping the oscillations sustained for longer periods.

Using IC 7805 Regulator

The IC7805 is a linear voltage regulator IC which implies that it would dissipate heat significantly during the charging procedure which in turn might result in a reduced efficiency.

In order to overcome this, one may consider employing a buck converter circuit at the output instead of the shown 7805 IC, as shown in the following image

Circuit Diagram

get free help for circuit diagrams

You'll also like:

  • 1.  Make a Walkie Talkie Circuit using FM Radio
  • 2.  Deriving Free Energy from Air Using a Sec Excitor Coil
  • 3.  How to get Free Energy from a Pendulum
  • 4.  Long Range Transmitter Circuit – 2 to 5 Km Range
  • 5.  Wireless Home theater Circuit using Bluetooth Headset
  • 6.  How to Generate Electricity from Piezo

About Swagatam

I am an electronic engineer (dipIETE ), hobbyist, inventor, schematic/PCB designer, manufacturer. I am also the founder of the website: https://www.homemade-circuits.com/, where I love sharing my innovative circuit ideas and tutorials.
If you have any circuit related query, you may interact through comments, I'll be most happy to help!

Subscribe for the Latest Posts


 

Reader Interactions

Comments

    Have Questions? Please post your comments below for quick replies! Comments should be related to the above artcile Cancel reply

    Your email address will not be published. Required fields are marked *

  1. Kevin VanDerSys says

    January 28, 2021 at 9:21 pm

    Swag,
    Same idea, different config! Pendulum/Lever, Two-stage Mechanical Oscillator.
    pendulum free energy water pump circuit
    Looking for a STEP MOTOR:
    1). Plunge force
    2). Pendulum weight
    3). Low RPM

    Glad to share image of model to verify.

    Thanks

    Please reply!

    Reply
    • Swagatam says

      January 29, 2021 at 2:35 pm

      Thanks Kevin, if possible I will surely try to design the concepts specified by you, and post them here!

      Reply
  2. Kevin VanDerSys says

    January 27, 2021 at 11:16 pm

    Kevin Asks?

    STEP MOTOR for? TARGET—OUTPUT—5.0V—2A? (BALLPARK)

    PURPOSE: TO—CELL—PHONE

    🙂

    Reply
  3. Jed says

    January 12, 2018 at 5:39 am

    You are a very capable person!

    Reply
  4. Aabhishek Sharma says

    December 25, 2017 at 4:02 pm

    Hi sir, if I have connected 18 Pcs of 1watt LEDs(18watts) in parallel, so can I power them using 5v 1 amp input (5w).?

    Reply
    • Swag says

      December 25, 2017 at 4:53 pm

      You can connect them, but the light will be very dim…

      Reply
      • Aabhishek Sharma says

        December 25, 2017 at 6:12 pm

        I have checked practically the light is very good. One more question please, what is the maximum voltage 1w led can bear safely.

        Reply
        • Swag says

          December 25, 2017 at 7:36 pm

          if you compare it with the actual light, you will find it to be low….

          3.3V is the correct (optimal) operating voltage for a 1 watt 350mA LED

          Reply
          • Aabhishek Sharma says

            December 25, 2017 at 8:16 pm

            With 3.3v it’s not enough light but I’m powering them with 4.7 to 5v @1Amp and it’s performance is good, is it good?

            Reply
            • Swag says

              December 25, 2017 at 9:09 pm

              It is wrong. The right specs are 3.3 V 350 mA, or 300mA is better, but since since your input current is low, 5V might work, check the voltage across the LED, if it is dropping to 3.5V, then it is OK, if not them it will damage your LEDs very soon

              Reply
          • Aabhishek Sharma says

            December 25, 2017 at 10:40 pm

            My input current is 1A, and the old USB emergency lamp which I made 6 months ago also working very nicely till now, (very perfect even with having 5v ni-cd battery pack).
            My current input for 18 LEDs in series is 1A,.
            With 3.3v the brightness is less,..
            Is there any circuit with you for voltage doubler or enhancer which can make 6v input to 7 volts or 8volts.(transistor and mosfets operated circuit, no ic.)

            Reply
            • Swag says

              December 26, 2017 at 6:48 am

              3.3V is the right voltage for any white LED, and 1amp for 18nos 1 watt LED is too less, so I cannot discuss anything related to this topic since it is being done with wrong specifications.

              Reply
              • Swag says

                December 26, 2017 at 6:51 am

                OK, you said your 18 LEDs are in series, in that case the voltage should be 3.3 x 18 = 59V, and the current should be 300mA.

                so make sure you apply this much power to your LEDs…

                Reply
    • Alek says

      January 27, 2020 at 3:29 pm

      Iam very interest about the circuit,thanks for sharing,
      but i have no knowledge of electronic,
      my questions is,,,
      How long the pendulum and keep self moving?…and for firts time to make it running, do we need to give external force?like move the pendulum with our hand?

      Reply
  5. Angelous Chavez says

    October 31, 2015 at 2:07 pm

    Sir what type of motor in the circuit above?

    Reply
    • Swagatam says

      November 1, 2015 at 2:16 pm

      any DC brushed motor will do….

      Reply
  6. PavanDON says

    June 6, 2015 at 6:38 pm

    Cpu fan how to make wind mobile charger?

    Reply
    • Swagatam says

      June 7, 2015 at 8:01 am

      CPU fan is too small to generate sufficient current for charging a cell phone.

      Reply
  7. Pritam Bhowmik says

    June 4, 2015 at 12:20 pm

    Can i use a dc geared motor as the generator? I want to use as a free energy generator to charge battery. Which should i buy? Also mention its price

    Reply
    • Swagatam says

      June 4, 2015 at 1:57 pm

      No, a geared motor is not recommended here. you can try a 9V/2amp BLDC motor, I am not sure about the price…

      Reply

Primary Sidebar



Categories

  • 3-Phase Power (15)
  • 324 IC Circuits (19)
  • 4017 IC Circuits (52)
  • 4060 IC Circuits (25)
  • 555 IC Circuits (98)
  • 741 IC Circuits (19)
  • Amplifiers (59)
  • Arduino Engineering Projects (83)
  • Audio Projects (94)
  • Battery Chargers (83)
  • Car and Motorcycle (94)
  • Datasheets (46)
  • Decorative Lighting (Diwali, Christmas) (32)
  • DIY LED Projects (89)
  • Electronic Components (97)
  • Electronic Devices and Circuit Theory (35)
  • Electronics Tutorial (109)
  • Fish Aquarium (5)
  • Free Energy (34)
  • Fun Projects (12)
  • GSM Projects (9)
  • Health Related (19)
  • Heater Controllers (28)
  • Home Electrical Circuits (100)
  • How to Articles (20)
  • Incubator Related (6)
  • Industrial Electronics (28)
  • Infrared (IR) (40)
  • Inverter Circuits (98)
  • Laser Projects (12)
  • LM317/LM338 (21)
  • LM3915 IC (25)
  • Meters and Testers (64)
  • Mini Projects (156)
  • Motor Controller (66)
  • MPPT (7)
  • Oscillator Circuits (24)
  • PIR (Passive Infrared) (8)
  • Power Electronics (33)
  • Power Supply Circuits (74)
  • Radio Circuits (9)
  • Remote Control (47)
  • Security and Alarm (61)
  • Sensors and Detectors (118)
  • SG3525 IC (5)
  • Simple Circuits (74)
  • SMPS (29)
  • Solar Controllers (60)
  • Timer and Delay Relay (53)
  • TL494 IC (5)
  • Transformerless Power Supply (8)
  • Transmitter Circuits (40)
  • Ultrasonic Projects (14)
  • Water Level Controller (45)


Circuit Calculators

  • AWG to Millimeter Converter
  • Battery Back up Time Calculator
  • Capacitance Reactance Calculator
  • IC 555 Astable Calculator
  • IC 555 Monostable Calculator
  • Inductance Calculator
  • LC Resonance Calculator
  • LM317, LM338, LM396 Calculator
  • Ohm’s Law Calculator
  • Phase Angle Phase Shift Calculator
  • Power Factor (PF) Calculator
  • Reactance Calculator
  • Small Signal Transistor(BJT) and Diode Quick Datasheet
  • Transistor Astable Calculator
  • Transistor base Resistor Calculator
  • Voltage Divider Calculator
  • Wire Current Calculator
  • Zener Diode Calculator


You can also Chat with me here:

Facebook
Twitter
YouTube
Instagram
My Facebook-Page
Quora



© 2022 · Swagatam Innovations

We use cookies on our website to give you the best experience.
Cookie settingsAccept All
Privacy & Cookies Policy

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Please visit the Privacy Policy Page for more info.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Non-necessary
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
SAVE & ACCEPT