Ventricular fibrillation is one type of arrhythmia that can be deadly. It occurs when the heart beats with rapid, erratic electrical impulses. This causes pumping chambers in your heart (the ventricles) to quiver uselessly instead of pumping blood.
A VOLTAGE REGULATOR regulates the charging voltage that the alternator produces, keeping it between 13.5 and 14.5 volts to protect the electrical components throughout the vehicle. There is also a system to warn the driver if something is not right with the charging system.
The process of how a boost regulator works is somewhat beyond the scope of this document, suffice to say they work great but are a little more annoying than linear regulators because you have to pick out an inductor and wire up some extra parts. You can get a lot more info about Boost Converters at wikipedia.ne is that they don't have a lot of amp-hours: that is, how much current (amps) they can provide and for how long (hours). A duracell 9V provides-about- 500mAh over its lifetime. That's 500 mA (or .5A) for one hour or 100mA for 5 hours.