Hi everyone!
I am new to electronics and have been learning the basics. I am trying to make a power harvesting device that generates power from the kinetic energy of a person while they are moving. The kinetic energy of the person drives a small motor generator, the generated power gets stored in a capacitor and is used to power a lower power electric device (around 1.5v, 20ma).
Is the circuit I have designed below workable?
The DC motor will output between 0 and 4.5v depending on the speed the person moves. The DC motor can turn both clockwise and anti-clockwise so there is a rectifier bridge. And there is a blocking diode to prevent the current flowing back to the motor from the capacitor. The linear voltage regular ensures a 1.5v output.
I expect that the small motor generator will produce very small amounts of power and my concern is that the rectifier bridge and blocking diodes will cause a significantly voltage drop even when using Schottky diodes and there will be further losses from the linear voltage regulator. Can anyone suggest if there might be a better way to do this to allow the best chance of working?
Many thanks!
I am new to electronics and have been learning the basics. I am trying to make a power harvesting device that generates power from the kinetic energy of a person while they are moving. The kinetic energy of the person drives a small motor generator, the generated power gets stored in a capacitor and is used to power a lower power electric device (around 1.5v, 20ma).
Is the circuit I have designed below workable?
The DC motor will output between 0 and 4.5v depending on the speed the person moves. The DC motor can turn both clockwise and anti-clockwise so there is a rectifier bridge. And there is a blocking diode to prevent the current flowing back to the motor from the capacitor. The linear voltage regular ensures a 1.5v output.
I expect that the small motor generator will produce very small amounts of power and my concern is that the rectifier bridge and blocking diodes will cause a significantly voltage drop even when using Schottky diodes and there will be further losses from the linear voltage regulator. Can anyone suggest if there might be a better way to do this to allow the best chance of working?
Many thanks!