Electronics Engineering

Carrier signal is of high frequencies, it gives strength to the original signal because original signal cannot travel long distances so it needs to be strengthen a bit for transmitting.

The carrier signal is a high frequency signal, called an RF. Radio Frequency signal, it is to high for the human or animal ear to detect it, so its outside the audible spectrum and can easily be transmitted over the air to receivers that is tuned to receive that frequency and detect any modulation on that signal.

stub

Check the links! Microchip's Application Notes are a good place to start.

A rectifier is an electronic device that changes an AC voltage to a DC voltage.

x/3+y/4=1 slope and y-intercept is it vector, then it is a quantity with both magnitude and direction,e.g velocity, displacement and a scaler: then it is a quantity only with magnitude. e.g peed, distance

The emitter, the base, and the collector are parts of a transistor.

ASCII is very common. EMBDIC is hardly so.

However, ASCII has been almost completely replaced by Unicode, which is by far the most common encoding scheme anywhere. Unicode comes with several variations (UTF-8, UTF-16, UTF-32, etc). UTF-8 is an 8-bit extension of the 7-bit ASCII coding scheme and allows the encoding of any arbitrary character available in Unicode. The different formats UTF-16 and on are primarily used to encode characters in a different language that will almost always require subsequent bytes.

There are dozens of different types of antennae. To see a list and get more details about individual types, see the related link.

The easiest way is by using an FET

Ground is a base point in every circuit.we define it's potential to 0.so GND=0 Volts.

We know that logical circuits build up with transistors and use those in saturation mode. in saturation mode we need 5 volts voltage in input to we have this mode.5 volt voltage is IC working voltage(Vcc) too. so 3-5 volt is 1 logic

A triode pentode is a thermionic valve, also known as a vacuum tube (USA). It comprises a triode which has three electrodes and a pentode which has five electrodes, both sections of the valve are enclosed in a single glass envelope.

They were often used in domestic audio amplifiers in the 'valve era' where the triode section acted as a preamplifier to increase the amplitude of the low level signal from the input source such as a tape head or a crystal pick-up; and the pentode section provided sufficient power amplification to drive a small loudspeaker.

Minimising the number of valves in such designs significantly reduced the overall power consumption, heat dissipation and manufacturing cost of the equipment. It also reduced the retail price, making record players more affordable to the domestic consumer.

Triode pentodes are still used in some current production, British built Hi Fi amplifiers because, with careful attention to the design, they can be configured to out-perform double triodes (two triodes in a single envelope) in the driver stages.

Submitted by Graham Stannett (Croxley Audio). I would be grateful if you would be kind enough to contact me if you wish to amend this WikiAnswer or if you would like more information regarding valve amplifiers.

I bought:

reed switch

LED

Buzzer

Button (On/Off)

Resistor (if necessary)

I connected:

<---Button------Reed switch------Resistor (if necessary)------LED------Buzzer---Batteries--->

Typical D cell batteries NiCad or otherwise are 1.2 volts.

that is called solar cell which converts light(photons) to D.C voltage .the amplitude of voltage depend on how many solar cell are you joined in seies a solar cell normally produce 0.6-0.7 V D.C

Enameled copper wire is copper wire coated by a insulating paint usually colored red. The paint is much thin rubber/plastic sleeves that other wires have, yet provide almost the same amount of insulation. Enameled wire is primarily used in the construction of electromagnets since it allows more loops to be packed into a smaller volume.

Essentially yes, this is the reason why many electronic cables are surrounded by a metal mesh. This mesh acts as a Faraday cage and helps prevents the wires inside it from acting as an antenna and picking up unwanted noise.

In an analogy, Generated EMFs can be considered as the speed or force at which the boat is moving, while Induced EMFs can be considered as a standyby boat with no engine, when the moving boat with an engine passes. Generated EMFs, considered as the boat with an engine, is the voltage which is generated by a source, by which in this case is the engine, while the Induced EMF, considered as the boat with no engine, is affected by the moving boat with an engine, thereby also moving the Induced EMF. In a sense, Generated EMFs have their own source while Induced are only 'moved' by other external forces. Like wise when electrons flow on a wire the ripples or magnetic flux will induce or generate motion on any wire or conductor next to it. That's how transformers work.

It should be marked, either on the diode or on the box it came in. If you can't find the mark, then you have to measure it yourself. Take the zener diode, a battery or DC power supply, and a resistor. Wire them all in series, with the NEG (cathode) end of the diode closer to the POSitive side of the battery or power supply. Connect your voltmeter across the diode, and slowlyincrease the power supply output voltage while watching the meter. You'll see the voltage across the diode increase slowly, tracking the power supply, until you reach the Zener voltage. At that point, the voltage across the diode won't increase any more; it'll just stay there at its 'reverse breakdown' voltage, which is the Zener voltage. (If the voltage across the diode goes to around a volt and won't go any higher, the polarity is wrong. Reverse either the diode or else the power supply.) You probably want a wild guess at what the value of the resistor should be. That's difficult to specify if I don't know the power rating of the Zener diode you're testing. I'm going to make the following suggestion completely in the blind: Select the resistor to limit the series current to 30 mA even if you have to crank the power supply up to 50 volts. R = 50/.03 = 1.5 to 2 K-ohms, rated for a couple of watts.

A Griffin itrip transmitter uses the power supply provided by your Ipod, so you are using that battery. There is no battery source in the Itrip I own.

Capacitance is an ability to store an electric charge.

"If we consider two same conductors as capacitor,the capacitance will be small even the conductors are close together for long time." this effect is called Stray Capacitance.

First of all, in an active circuit, there are voltages flowing through various nodes. If you try to measure the resistor, those voltages will cause error in your meter, or may damage your meter. Second of all, even if you cut the power, any loop in the circuit around the resistor will affect the measured impedance. Unless you are certain that only the resistor will see the current introduced by the meter, you must take the resistor out of circuit to measure it.

preset and clear

Current in amperes is coulombs per second, so 2 coulombs per second is 2 amperes.