Ads
related to: can radios work without electricity
Search results
Results From The WOW.Com Content Network
A batteryless radio is a type of radio receiver that does not require the use of a battery to provide it with electrical power. Originally this referred to units which could be used directly by AC mains supply (mains radio); it can also refer to units which do not require a power source at all, except for the power that they receive from an ...
A crystal radio receiver, also called a crystal set, is a simple radio receiver, popular in the early days of radio. It uses only the power of the received radio signal to produce sound, needing no external power. It is named for its most important component, a crystal detector, originally made from a piece of crystalline mineral such as galena ...
An experimental model, developed by General Electric, weighed just 10 ounces and was capable of working without light and recharging. It contained seven solar cells, four transistors and a small battery. [2] [3] In 1954, Western Electric began to sell commercial licenses solar powered radio, including other photovoltaic technologies. [4]
However, fewer landlines are actually equipped with the traditional copper-wire lines that work without electricity as providers are shifting toward internet-enabled voice calling. Over time, that ...
Some emergency radios can also be powered by an attached solar panel. One element that separates some emergency radios from other types of radios, is the ability to broadcast alerts via the Emergency Alert System, even when the radio sound is turned off. This is especially useful in areas where sudden storms, tornadoes, tsunamis or other fast ...
Newer technology includes hand-cranked radios which provide power without batteries. Shortwave radios can be used in situations where over-the-air television, cable television, satellite television, landline phones, mobile phones, satellite phones, satellite communications, or the Internet is temporarily, long-term or permanently unavailable ...
The first is through solar power, and it's the easiest way to charge when there's no power elsewhere. You can also top off the Grecell by plugging it into an AC outlet or into a car.
The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.