Find out more about how to make a motor generator

pulse motor
step up booster
solar panels

 Motor generator powered with solar panels

                                                                                                             (PULSE MOTOR GENERATOR – PMG)
Objective: to build a simple motor generator using a fidget spinner with iron insertions, neodymium magnets, two coils iron – less, a reed switch two small solar panels, and five leds
Category : solar power projects
Input : DC
Output : AC
motor generator

motor generator

How it works :
The pulse motor generator  generates Ac voltage. The input pulse current passes through a  input coil iron less (bobbin) specifically positioned. The power wheel is composed of a fidget spinner “1.” with iron insertions and three neodymium magnet discs “2.” disposed N-N-N. The reed switch “7.”  is positioned on the input coil “6.” like in the image presented at “8.” The pulse motor generator is powered with two small solar panels presented at “3.” The reed switch is actuated by bringing a magnet near it. Once the magnet is pulled away from the switch, the reed switch will go back to its original position.
Intro :
reed switch is an electrical switch, operated by an applied magnetic field and It consists of a pair of contacts on ferromagnetic metal reeds in a hermetically sealed glass envelope.
To make a pulse motor generator (PMG) efficient :
  • The losses must be reduced to a minimum
  • The back EMF must be fully captured
  • The torque efficiently utilized to produce enough power to provide the pulses to drive the system
The simple motor generator is using simple electric motor setups presented in the link below and in adition a second coil iron – less which provide capture of the magnetic flux generated by the rotation of the flywheel (AC output voltage), a reed switch “7.” and a step up booster module presented at “4.”.
How to make a simple motor generator :
motor generator scheme

motor generator

Materials used to build pulse motor generator:
1.fidget spinner with iron insertions – the flywheel – simple  motor generator
fidget spinner component

fidget spinner

2. three neodymium magnet discs
motor generator components

neodymium discs

3. two small solar panels – power source
motor generator component

mini solar panel

Details :
Voltage: 5V
Power: 1.2W
Current: 240 mA
Material: Monocrystalline
Size: 110 x 69mm
4. Step-up Module with adjustable booster power supply module
motor generator component

step-up module

  • AeroSemi MT3608 1.2MHz 2A Step Up Converter
  • 2A maximum output current
  • 2.0 to 24VDC input voltage range
  • 28V maximum output voltage (trimpot adjustable)
  • 93% peak efficiency (~200mA output current at 5Vin, 12Vout)
  • 36 x 17 x 14mm
5. Coil iron less from a syncronous motor 230 V – used to capture the magnetic flux gnerated by the pulse motor
The output coil will provide Ac voltage. If we wish to generate Dc voltage, in addition we need an Ac – Dc converter. In this project we did not use it, the leds are directly connected to the coil output (AC voltage).
fidget spinner generator coil without core

motor generator component

6. bobbin – coil iron less used to produce a repulsive force
simple motor

input coil – pulse motor generator

the boobin used in this science project, is from an electromagnetic door hold – open device
7.  reed switch
simple motor generator

reed switch

8. reed switch position on the input coil “6.” 

reed switch position on the input coil

9. led circuit 


a sciencetoolbar project

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motor generator - solar energy project

solar panels
step up booster
pulse motor