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IC/IB where IC is Collector Current and IB is Base Current
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∙ 11y ago
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What is the mechanism of digitized sound?
A chip called an Analogue to digital converter (ADC) is used to convert sound waves in the form of analogue electrical impulses, into numeric values which can then be processed by the computer. Conversely, a chip called a digital to analog converter (DAC) does the reverse. The quality of the sound recorded is goverend by two constants , this is the sample rate and the bit depth. The sample rate is the number of samples of a sound taken per second. For instance a CD is sampled at 44kHz or 44,000 samples per second. The bit depth describes the maximum value of a number used to store the amplitude of a sound. The greater this value the greater the change between silence and the maximum sound value stores or greater dynamic resolution. In the case of CD's 16 bit or a value between 0 and 65535.
How does a vending machine know if the coin is real or fake?
Original coin slots used a system of weight and thickness tests to check to see if a coin was valid.In a vertical mechanical slot a coins initial size is tested by the slot guard which is a metal plate keyed to he vertical size of the coin. It then drops into a cradle which has a counter balance which tilts at a calculated speed dependant of the weight of the coin. After this it rolls down a guide which has a gap which is slightly smaller than the width of the coin passing a magnet on the way. The magnet will pick up iron based slugs but will also slow coins of other materials as well. Then the coin rolls off the end of the guide jumping a gap and hitting a nylon angle. The speed at which this impacts determines how far it bounces off the nylon into one of two slots. the closest slot is the reject return and the farthest the accept slot. If the coin is to light it won't bounce far enough to be accepted. Once the coin has been accepted it will pass by an anti-strimming latch which prevents the old coin on a string trick. Further to this some slots use dual micro-switches that time the decent of a coin and trip an alarm if the coin drop is too fast or slow. Finally the coin drops through a microswitch to register the coin to the CPU. There are various other designs of mechanical slot but the vertical type are the most frequently used.On a modern electronic slot this process is more simple and more complex at the same time. On these slots weight and size are irrelevant. what is important here is metal composition. Using the principle of back EMF effect a coin is passed down a slope at a known speed determined by its mass past a number of coils. The interaction of the coin and the coil creates a voltage which is read by a ADC and compared by a microprocessor to a set of known values stored in a ROM. If the coin does not produce the correct values a signal is sent by the microprocessor to open a section of the rail and drop the coin out of the reject slot. If the coin is accepted it continues down and past a pair of opto-sensors which look for strings, nylon strimmers etc. If the second opto is tripped and the drop time between the pair is right for that coin it will be registered as accepted.Needless to say that the electronic slot is very resistant to fraud since it not only tests the size & mass of the coin but also its metal composition as different metals produce different back EMF values. It also has the advantage of being able to accept any size or shape of coin made in any country through a quick ROM change.
What is full form of ADC?
Applied Direct Current By Saurabh :)
Will the output of ADC be an integer or will it be a decimal also?
You will have to determine its scaling factor. The output of the ADC is a number, you can interpret it anyway that is necessary for the system it is in.
What is need to go with adc converters you are having rectifiers?
<p><p> ADC Converters are those converters which converts continuous quantity to discrete time digital representation.Typically, an ADC is an electronic device that converts an input analog voltage or current to a digital number proportional to the magnitude of the voltage or current. * ADC is converting Analog to Digital,but Rectifiers converts from ALTERNATING CURRENT to DIGITAL CURRENT. ANALOG and ALTERNATING are different concepts. But , Rectifiers are totally different issue, they convert Alternating Current(AC) to Direct Current(DC). They cut the negative waveform from AC wave and make it uni- directional which is called Direct Current(DC) wave.
What are the types of ADC?
Types Of ADC Are As follows: 1.Counter type ADC 2.Successive approximation type ADC 3.Flash Type ADC 4.Wilkinson type ADC
What is a reference voltage of an adc?
The voltage at which the adc converts the signal.... it can also be called a limit of an ADC.
When was ADC Airlines created?
ADC Airlines was created in 1984.
When was ADC Theatre created?
ADC Theatre was created in 1881.
When was ADC Telecommunications created?
ADC Telecommunications was created in 1935.
What is ADC Telecommunications's population?
ADC Telecommunications's population is 9,047.
When was ADC Aircraft created?
ADC Aircraft was created in 1920.
When did ADC Airlines end?
ADC Airlines ended in 2007.
How will be the pin diagram to interface adc to pic?
It depends on the ADC and PIC
