Successful digital time relay for High-Risk Applications
Reliable digital time relay Designs for Industrial and Industrial Applications
CHINA – ?¡ãAny Electronics?¡À proudly presents their complete range of digital time relay . They offer a total set of digital time relay items as well as other interrelated items. These units are noticed in different applications for instance industrial applications, industrial manage circuits as well as OEM Panels. These devices include exceptional precision and repeatability. The regular digital time relay which are designed these days demand quite small panel space.
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Features: Brand new and High quality. Cut out (MM) : Φ64. Fitting Depths (mm) : 21. DC:12v. Power consumption : 4.4VA. current consumption without load : 0.015mA. SWITCHING CURRENT AC. Resistive Load (LVD .IEC) 16A /250V AC. Inductive load cos . 0.6 8A /250V AC. incandescent lamp load 1000W. SWITCHING CURRENT DC : 16A/24V DC. Operation accuracy : Type(+-)1 s/day. Ambient temperature : -10℃-55℃. Shortest switching time : 1 min. Shortest switching interval: 1 min. Number of channels " 1. Number of memory spaces : 17. Type of connection : Plug in. ACCORDING TO : EN60730-1. Installation method:screw, connector connection. Key Button: 1.clock, timer, day, h+(setting the hours), m+(setting the minutes), manual override, reset. Tips: 2.Before starting the program, the timer should be charged for at least 5 minutes as the inbuild battery may be of no battery. 3.Before setting the program, press the key button reset, to clear the memorize data for the new instructions. 4.After the program is made, please insert the timer to the plug. Then connect the electric appliance to the timer. 5.The on and off can be set eight times each day, which can be set as follow: First option, Sunday. Second option: from Monday to Friday. Third option: Saturday and Sunday(weekend). Fourth option: from Monday to Saturday(working days). Fifth option: Monday, Wednesday, Friday. Sixth option: Tuesday, Thursday, Saturday. Seventh option: from Monday to Wednesday. Eighth option: from Wednesday to Saturday. 12 hours and 24 hours systems are optional. Specifications: Original box: yes Item size: 61*59*31mm Packaging size: 70*67*44mm Net weight: 79g Packaging weight: 88g Colour: White Packet content: 100% Brand New 1 x Programmable Timer Switch
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I'm guessing they use radio waves, but radio waves travel at the speed of light, which would take some time to travel to the spacecraft (if it is far out near Saturn or Jupiter). Also, there were camera recordings of some spacecraft falling into a planet and what it saw there. How are these recordings relayed back to Earth. On a planet like Venus, wouldn't the atmosphere prevent the signals from going through?
And got the following answer:
Radiowaves are transparent to atmospheres, and there was no mothership. The time delay is well-known. The data of an image in digital format can be transmitted by radio waves "...RadarRadar (Radio Detection And Ranging) detects objects at a distance by bouncing radio waves off them. The delay caused by the echo measures the distance. The direction of the beam determines the direction of the reflection. The polarization and frequency of the return can sense the type of surface. Navigational radars scan a wide area two to four times per minute. They use very short waves that reflect from earth and stone. They are common on commercial ships and long-distance commercial aircraft. General purpose radars generally use navigational radar frequencies, but modulate and polarize the pulse so the receiver can determine the type of surface of the reflector. The best general-purpose radars distinguish the rain of heavy storms, as well as land and vehicles. Some can superimpose sonar data and map data from GPS position. Search radars scan a wide area with pulses of short radio waves. They usually scan the area two to four times a minute. Sometimes search radars use the Doppler effect to separate moving vehicles from clutter. Targeting radars use the same principle as search radar but scan a much smaller area far more often, usually several times a second or more. Weather radars resemble search radars, but use radio waves with circular polarization and a wavelength to reflect from water droplets. Some weather radar use the Doppler effect to measure wind speeds.  Data (digital radio) Most new radio systems are digital, see also: Digital TV, Satellite Radio, Digital Audio Broadcasting. The oldest form of digital broadcast was spark gap telegraphy, used by pioneers such as Marconi. By pressing the key, the operator could send messages in Morse code by energizing a rotating commutating spark gap. The rotating commutator produced a tone in the receiver, where a simple spark gap would produce a hiss, indistinguishable from static. Spark-gap transmitters are now illegal, because their transmissions span several hundred megahertz. This is very wasteful of both radio frequencies and power. The next advance was continuous wave telegraphy, or CW (Continuous Wave), in which a pure radio frequency, produced by a vacuum tube electronic oscillator was switched on and off by a key. A receiver with a local oscillator would "heterodyne" with the pure radio frequency, creating a whistle-like audio tone. CW uses less than 100 Hz of bandwidth. CW is still used, these days primarily by amateur radio operators (hams). Strictly, on-off keying of a carrier should be known as "Interrupted Continuous Wave" or ICW or on-off keying (OOK). Radioteletype equipment usually operates on short-wave (HF) and is much loved by the military because they create written information without a skilled operator. They send a bit as one of two tones using frequency-shift keying. Groups of five or seven bits become a character printed by a teleprinter. From about 1925 to 1975, radioteletype was how most commercial messages were sent to less developed ..." http://en.wikipedia.org/wiki/Radio ",,,environment. Planetary research involves many scientific disciplines and requires a variety of instruments and techniques, including astronomical studies from the Earth, planetary spacecraft flybys, orbiters, and probes, and eventually manned landings. Each of the various approaches used has a particular strength that the experimenters try to exploit. Thus far, most planetary radio astronomy has been carried out from the ground, but the techniques carry over to spacecraft as well. Planetary radio astronomy measurements provide complementary data to other observational techniques. They also provide some unique data. For example, radio measurements can be used to provide information about planetary atmospheres and planetary subsurface materials to much greater depth than other remote sensing techniques. The greater penetration is a result of neutral gases and solids being more transparent to radio waves than higher-frequency waves such as infrared or visible light. Also, the scattering from particulate materials in planetary atmospheres is generally less at radio wavelengths than at shorter wavelengths. The relative transparency of atmospheres, clouds, and surfaces to radio waves allows the planetary radio astronomer to measure thermal profiles of planetary atmospheres beneath the cloud layers in the atmosphere and to measure temperatures beneath the solid surface of the planet. Taking advantage of this property, radio astronomers were the first to measure the very high surface temperature of cloudcovered Venus. 4..." http://www.radio-astronomy.org/library/Radio%20Astronomy%20Planetary.pdf http://www.ehow.com/facts_6777455_microwave-radio-technology.html
The digital time relay function exceptionally nicely with distinct applications which are distinct to energy distribution and protection. The relays come with wide adjustment ranges with a scale that is simple to study either in 3 or 4 digits as outlined by the model. These digital time relay support in rising the flexibility with the applications, reduce the general power and maintenance charges. You can find relays which are made use of for basic purposes which come in trusted styles with rapid replacement options. And you can find models that are utilised for industrial applications and heavier duty applications that operate on significant loads. These products are produced to meet the lifetime industrial manage needs of the applications.
Their newest products would be the Time counter, Timer Delay, digital time relay, Rapid Connect Couplings, Electronic Motor Couplings, Aluminum Couplings, Morse Couplings and different other folks. The web page offers a detailed description of every single model in various categories of digital time relay couplings and sensors. These products are really useful for high-risk applications. The digital time relay are also readily available with options like numerous timing ranges and functions. The company is at the moment looking for agents and dealers who can market and sell their factory created goods. They may be often on a lookout for building new and more trustworthy products according to the desires and requirements of your business.
The digital time relay perform very effectively with different applications which can be specific to energy distribution and protection. The relays come with wide adjustment ranges with a scale that is simple to study either in three or 4 digits according to the model. These digital time relay aid in rising the flexibility of your applications, lower the all round power and upkeep fees. There are actually relays that are made use of for general purposes which come in dependable styles with swift replacement solutions. And there are models which might be made use of for industrial applications and heavier duty applications that perform on large loads. These solutions are created to meet the lifetime industrial handle requirements from the applications.
Their most current goods would be the Time counter, Timer Delay, digital time relay, Swift Connect Couplings, Electronic Motor Couplings, Aluminum Couplings, Morse Couplings and several other individuals. The internet site provides a detailed description of each and every model in a variety of categories of digital time relay couplings and sensors. These items are extremely helpful for high-risk applications. The digital time relay are also obtainable with capabilities like multiple timing ranges and functions. The firm is at present looking for agents and dealers who can promote and sell their factory created items. They’re normally on a lookout for establishing new and more reputable products based on the requirements and needs with the business.