Electronics Engineering

wireless communication block diagram

It looks like any other low voltage cable, such as a CAT-5 Internet cable. There are several variants to the RS-232 standard. The standard defines a 25 pin configuration for serial data communications. In many cases fewer conductors are used. Google RS-232 standard for definition of the connectors, cable length, restrictions, baud rates and voltage levels.

A: Absolutely while the voltage can be changed the current is limited by the design or kva

If the potential across the junction is high enough, then it could cause it to conduct. This is with all diodes and is the forward voltage. If it is not high enough, it will just sit there and not conduct.

The Sanskrit word for electronic device: विद्युत्पत्र उपकरण vidyutpatra upakaraNa

nothing

the log rollers are lumberjacks

RF Optimization means radio frequency optimization and it means improving and optimizaing the mobile or GSM network using the exixted and available components only and RF optimization is a department in any mobile operator company.

Run DMC

The difference in the electron and hole mobilities is responsible for the small negative Hall coefficient of intrisic semiconductors.

Refs: C.M.Hurd : Hall effect in metals and alloys

R.Asokamani :solid state physics

Busch& Schade; Solid state Physics

A: Every device is built to perform into an operating region. which means environment like temperature and/or electrical region. outside of the region it will self destruct

Metallic bonds are able to conduct electricity only when they are dissolved in a liquid substance or when in molten, this is because these conditions cause the metallic bond to break down and allow the electrons used in the bond to be delocalised and disposited around the molten or liquid. This sea of free electrons is then able to pass through a current and conduct electricity.

how about: moist, dank or humid.

Another word for 'less damp' is 'drier'.

AC RMS Value x 1.414

It has been a long time since I worked in the industry, but I seem to recall that the values marked on the caps is in "MICROFARADS," when not marked otherwise. In the "old" days we used a benchtop AC powered "IMPEDENCE BRIDGE" to characterize the value of caps. I think I remember reading somewhere that there is now a battery powered, handheld device called an "LCR METER," which does the same thing. I checked with a couple of my local Radio Shack stores, and they don't even know what an impedence bridge is, let alone an LCR meter so if you want to get one, you'll have to go to an electronics supply house used by professionals. Another possibility for characterizing the values is to take the caps to a local TV/electronics repair shop and a technician might be able to help. Another possible source for help may be a local "Ham" radio club, or an operator.

You don't, you read the tolerance markings. If you measure the resistor and it is outside the marked tolerance it is bad.

Very simple to install if you are somewhat handy with splicing electrical wires. There is a Red wire that needs to be taped into the radio ACC power line and a black wire that needs to be grounded to the chassis. If you don't have a manual/wire diagram on hand... easy way to check which wire is the ACC is to (1) unplug the harnesses on the back of the factory radio, (2) ground the MOD02, (3) turn the vehicle key all the way to "off", (4) insert the MOD02 red wire into one wire of the harness at a time and turn the key to "on". Remember to turn the key to off again after you are done checking that specific wire to start over. The wire that makes the power switch on the MOD02 glow only when the key is turned is your ACC wire. You will need to splice into this. After this it's pretty much plug and play. Some vehicles (my Infiniti for example) require an antenna adaptor because they don't utilize the standard Motorola connection that the MOD02 needs as your radio antenna wire now plugs into the MOD02 and the MOD02 plugs into your radio. These are relatively inexpensive.

Nothing. The motor is not doing work. A voltage needs to be switched between the coils for it to go.

Capacitance is measured in Farads. "The unit... in ohm and meter" does not make sense.

Radar emissions are electromagnetic radiation that travel at the speed of light.

It simply means that the DC component of diode output is proportional to the square

of the AC input voltage. So if you reduce RF input voltage by half, you'll get one quarter as much DC output.

Or if you apply ten times as much RF input, you get 100 times as much DC output as you did before. An

increase of 3dB results in twice as much output voltage.All diodes will follow

the square-law rule for small signals. We

should choose one that is fast, so 1N4000-

series power diodes are out. Any diode with a

lot of capacitance is out. Diodes with a sharp

I vs. V curve will give more output, so silicon

diodes are less desirable. Schottky diodes are

great, but they require DC biasing to get into

the really curved part of the I vs.V curve.

With zero bias, a germanium diode has very

decent qualities (apart from nasty

temperature effects). When Hewlett Packard

makes square-law diodes using exotic

semiconductors like gallium arsenide with

molecular-beam-epitaxy machines, the result

looks remarkably similar to a simple pointcontact

germanium diode like a 1N34A.

A type of hybrid integrated circuit. Hybrid integrated circuits use individual components mounted on a ceramic circuit board. The circuit board traces can be placed on the ceramic in a variety of different ways. For film hybrid integrated circuits metal vapor deposition is used and either thin films or thick films of the metal can be deposited. The components can be connected to the traces using either surface mount or welded individual wires.

You would connect them in series to double the output voltage.

SRAM based FPGAs cant be used for space application But we can go for Radiation tollerant Anti fuse FPGA.

Arduino is a physical computing platform based on a simple I/O board and a development environment that implements the Processing/Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g., Macromedia Flash, Processing, Max/MSP, Pure Data, SuperCollider). Currently shipping versions can be purchased pre-assembled; hardware design information for older versions is available for those who would like to assemble an Arduino by hand.