A bicycle electrical system is provided with a first electric component, a second electric component, and a third electric component. The first electric component includes a first electric power line communication section. The second electric component inc...

An automatic electric power generating device for wheels includes a wheel hub (11) and a housing (16). The wheel hub (11) is provided with a first magnetic pole set (1) and a second magnetic electric element (163). The first magnetic pole set (1) has a spo...

A protection network includes the additional active components such as an NPN transistor and a Zener diode, to generate a basic regulated power 12 volts from an electrical energy source (E2) supplying energy exceeding 12 volts, to power a 12 volt head ligh...