Build A Crystal Radio That Takes NO Batteries A crystal radio receiver, also know by crystal set or cat’s whisker receiver, it is basically a simple radio receiver, these was popular in the early days of the radio. A crystal radio needs no other power source it receives the powers solely from the radio waves received …
A common misconception is that all car batteries die. This, in fact, isn’t true—the majority of “dead” car batteries just don’t contain enough juice to power a car, but they can still provide enough watts to keep emergency fans and lighting running, which is great when a power outage occurs. So, instead of lugging the …