If people are in a place without possibility to recharge mobile phone battery, this mechanical charger can help. The charger is built into a pencil. It consists of linear alternator, rectifier, capacitor, constant current source and LED. It can be used as pocked lamp if LED is switched on. The linear alternator is shown in figure 1. The other parts are common so there is no need to describe them.
Stator is made of coils 1 in magnetic circuits 2 , moving part
consists of permanent magnets with pole extensions.
The moving part is connected by spring to push button. Second spring returns the button back to starting position. If the button is periodically pressed, magnets of moving part vibrate in stator and
alternating current is generated in the coils. The current is rectified and smoothed by capacitor. The mobile phone battery is charged via constant current source and cable.
ABOUT THE ENTRANT
Name: Zdenek Jedlicka
Type of entry: individual
Number of times previously entering contest:10
Zdenek's favorite design and analysis
Computer, paper&pencil, physical models
For managing CAD data Zdenek's company uses: developed programs
Zdenek's hobbies and activities:
Astronomy, photografy, electronics
Zdenek belongs to these online communities:
Zdenek is inspired by:
To improve live and save energy
Software used for this entry:
Patent status: none