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Lightning Switch, EnOcean, CHERRY and others manufacture wireless light switches that use energy harvesting instead of batteries ISM ENIGMA. The mechanical energy created by pressing the switch generates enough electricity to power a built-in transmitter that sends a radio signal to the receiver.
The Lightning Switch transmitter requires no outside source of electricity.Each time the transmitter button is pressed, the transmitter converts the mechanical energy supplied by the user's finger into electricity to power a radio transmission to a receiver/relay through the use of a piezoelectric generator (brand name: Lightning) originally invented by the National Aeronautics and Space ...
In the simplest arrangement, the switch consists of a gas-discharge tube across the input terminals of the receiver. When the transmitter is active, the resulting high voltage causes the tube to conduct, shorting together the receiver terminals to protect it, while its complementary, the anti-transmit/receive (ATR) switch, is a similar ...
The transmitter module is small, but users must have detailed knowledge to use it; combined with the RF remote control it is much simpler to use. The receiver is generally one of two types: a super-regenerative receiver or a superheterodyne. The super-regenerative receiver works like that of an intermittent oscillation detection circuit.
In the area of wireless computer networking, a base station is a radio receiver/transmitter that serves as the hub of the local wireless network, and may also be the gateway between a wired network and the wireless network. It typically consists of a low-power transmitter and wireless router.
Many transmitters switch in a suitable filter for the frequency band being used. The filter will pass the desired frequency and reduce all harmonics to acceptable levels. The harmonic output of a transmitter is best checked using an RF spectrum analyzer or by tuning a receiver to the various harmonics. If a harmonic falls on a frequency being ...
An RF transmitter module is a small PCB sub-assembly capable of transmitting a radio wave and modulating that wave to carry data. Transmitter modules are usually implemented alongside a microcontroller which will provide data to the module which can be transmitted.
An STA may be fixed, mobile or portable. Generally, in wireless networking terminology, a station, a wireless client and a node are often used interchangeably, with no strict distinction existing between these terms. A station may also be referred to as a transmitter or receiver based on its transmission characteristics.
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