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Electronics
Electronics are a branch of technology and science that deals with the control of the flow of electrons.
3,725 Questions
Purpose of a guillotine foot model?
A guillotine was used during the french revolution to chop heads off the rich and royal.
A foot model could have the purpose of chopping feets off. (Makes me ponder if this has actually been made for this particular purpose)
If it is infact a smaller model only, then its purpose is probably more for display and "education" rather than actual use.
The guillotine is by most people considered to be a gruesome and inhumane tool.
Facts is that it provided a quick death, although the waiting time before execution must have been devastating thoughtwise.
Not that I condone such methods of killing or disabeling people as the outcome is most permanently even if you infact might be innocent of the crime charged with.
Some tiny models have been made to cut off the tips of cigars before you light them.
Is it bad to have a laptop case bigger than a laptop?
It's actually good to have a bigger laptop case
1) Enough storage pockets to carry files and even mobile phones.
2) It can also provide sufficient place for other accessories like chargers etc.
Where can one purchase Electronic Planners?
There are many places to find and buy electronic organizers. For online purchases, Amazon and Brookstone are more popular choices. For in-store purchases, Target and Best Buy provide a decent selection of electronic organizers.
Where is an authorized repair center for klipsch sub-woofer?
Sybesma's Electronics
581 Ottawa Ave. Suite 100, Holland, MI 49423
Phone: (616) 392-6911 * Toll Free: (800) 456-4265
* Fax: (616) 392-9885
What is the meaning of buffering an operating system?
Refers to buffering:as reading and writing data from hdd takes long time.so to improve the speed for data processing the data next required by processor is stored is cache memory or CPU register.for e.g. to cut certain line from text file to copy into another file.cut data get stored in to buffer (CPU register) to get back stored into another file.
Orthomode transducer
From Wikipedia, the free encyclopedia
Orthomode transducer, VSAT Kuband
Outdoor unit, includes feed horn, OMT, LNB and BUC
Orthomode transducer (Portenseigne, France)
Orthomode transducer, vertical and horizontal polarity
Antenna side of OMT
An orthomode transducer is a microwave duct component of the class of microwave circulators. It is commonly referred to as an OMT, and commonly referred as a polarisation duplexer. Such device may be part of a VSAT antenna feed Orthomode transducers serve either to combine or to separate two microwave signal paths. One of the paths forms the uplink, which is transmitted over the same waveguide as the received signal path, or downlink path. For VSAT modems the transmission and reception paths are at 90° to each other, or in other words, the signals are orthogonally polarised with respect to each other. This orthogonal shift between the two signal paths provides approximately an isolation of 40dB in the Ku band and Ka band radio frequency bands.
Hence this device serves in an essential role as the junction element of the outdoor, unit (ODU) of a VSAT modem. It protects the receiver front-end element (thelow-noise block converter, LNB) from burn-out by the power of the output signal generated by the block up converter (BUC). The BUC is also connected to thefeed horn through a wave guide port of the OMT junction device.
Orthomode transducers are used in dual-polarised Very small aperture terminals (VSATs), in sparsely populated areas, radar antennas, radiometers, and communications links. They are usually connected to the antenna's down converter or LNB and to the High Power Amplifier (HPA) attached to a transmittingantenna.
Wherever there are two polarisations of radio signals (Horizontal and Vertical), the transmitted and received radio signal to and fro the antenna are said to be "orthogonal". This means that the modulation planes of the two radio signal waves are at 90 degrees angles to each other. The OMT device is used to separate two equal frequency signals, of high and low signal power. Protective separation is essential as the transmitter unit would seriously damage the very sensitive low (µV) micro-voltage, front-end receiver amplifier unit at the antenna.
The transmission signal of the up-link, of relatively high power (1, 2,or 5 watts for common VSAT equipment) originating from BUC,(block up converter) and the very low power received signal power (µ-volts) coming from the antenna (aerial) to the LNB receiver unit, in this case are at an angle of 90° relative to each other, are both coupled together at the feed-horn focal-point of the Parabolic antenna. The device that unites both up-link and down-link paths, which are at 90° to each other, is known as an Orthogonal Mode Transducer OMT.
In the VSAT Ku band of operation case, a typical OMTOrthomode Transducer provides a 40dB isolation between each of the connected radio ports to the feed horn that faces the parabolic dish reflector (40dB means that only 0.01% of the transmitter's output power is cross-fed into the receiver's wave guide port). The port facing the parabolic reflector of the antenna is a circular polarizing port so that horizontal and vertical polarity coupling of inbound and outbound radio signal is easily achieved.
The 40dB isolation provides essential protection to the very sensitive receiver amplifier against burn out from the relatively high-power signal of the transmitter unit. Further isolation may be obtained by means of selective radio frequency filtering to achieve an isolation of 100dB (100dB means that only a 10−10 fraction of the transmitter's output power is cross-fed into the wave guide port of the receiver).
The second image demonstrates two types of outdoor units, a 1-watt Hughes unit and a composite configuration of a 2-watt BUC/OMT/LNB Andrew, Swedish Microwave units.
The following images show a Portenseigne & HirschmannKu band configuration, that highlights the horizontal the vertical, and circular polarized wave-guide ports that join to the Feed-horn, the LNB or BUC elements of an outdoor unit
It is a game on the App Store on the Iphone, Ipad and Ipod touch. It is a game.
Trying to charge tablet with computer can you leave computer off while charging or turn it back on?
In order to charge the tablet from the computer - you need to leave the computer switched on.
Is there any Brother Printer tech support number around us?
The best support for Brother printers is Brother themselves, as they are the manufacturer. To get in touch with them, go to http://www.brother.com and there you can find a local phone number, send them an email, or even get into an Internet chat with someone who can help you with whatever problem you are having.
Filter is an electronic device which passes specific frequency and attenuates all other.There are 4 types of filters:
1) Highpass - passes only high frequencies
2)Lowpass - passes only low frequencies
3)bandpass-passes only specefic band of frequencies
4)band reject-passes all frequencies excepting desired band
When I plug in my Zune my computer doesn't register that it's plugged in what's wrong?
Nothings wrong, it's just your computer's way of telling you you're a retard for buying a zune.
What is the salary of electrical engineer in Pakistan?
the avg salary of a trainee chem eng is about 10000-15000
Where and how do moral problems arise in engineering?
In case Engineer A signs the contract but later discovers dangers to the public, what will be the ethical dilemma facing the engineer? In this case, what are the options available to the engineer?
How do you get someone you prank texted to stop calling you?
If a person is habitually sending you prank or any type of undesirable texts or emails, ALWAYS delete that person's messages without opening or reading (if you don't have the ability to block). Don't discuss this person or their messages with anyone; in other words, totally ignore that person's existence. If others try to discuss this person, their messages or especially what this person "said" about you, very matter of factly say something like, "He/she wouldn't say such a thing", or "I don't believe that he/she is that stupid", then move to another subject.
Leave the prankster without the satisfaction of hitting a "target", and the point of sending these messages altogether.
How do i build electronic enclosures?
There are several online sources that offer directions for building electronic enclosures. You can also buy the building materials on these websites.
Which companies offer electronic fax services?
There are numerous companies who offer Electronic Fax Services. Such companies include eFax, which is thought to be one of the best; but is expensive, Myfax, and Ring Central also offer such a service.
What is the function of the iron core in a transformer?
The iron core is there to provide a path for the magnetic flux to link both the primary and the secondary with as little flux as possible linking only one of the windings.
The cross-section area of the core determines how much magnetic flux there is, because transformer iron has a fixed maximum flux density, usually 1 Weber per square metre.
The amount of flux determines how many volts per turn there are on both windings.
What are the qualities of an electronic records keeping solution?
current process uses the windows explorer directory
storage area networks (san) space may be used to maintain electronic records
a requirement exists for a means to control electronic records
Primary Batteries are non-rechargeable devices that are manufactured with a one-time charge built into them. Secondary batteries are rechargeable, and are manufactured with no inbuilt charge, so they must be charged before use.
Note: Car batteries are nowadays built with coated plates so that they have an apparent charge when first installed. This is because cars do not have starter handles no, so installing an empty battery would present a problem in that the engine cannot be started to charge the battery.
