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Q. Explain about Diodes?
A single pn-junction with appropriate contacts for connecting the junction to external circuits is called a semiconductor pn-junction diode. The fundamental building block upon which all semiconductor devices are based is the pn-junction. The most common two-terminal nonlinear resistor is the semiconductor diode, whose symbol is shown in Figure (a). The terminal voltage and current are denoted by vD and iD, respectively. The physical structure of the pn junction is shown in Figure (b). The junction is made by doping the two sides of the crystal with different impurities. Figure (c) shows the volt-ampere curve (or static characteristic) of the ideal (or perfect) diode. Note that when vD is zero, iD is not and vice versa, a condition corresponding to a switch. A diode acts like a switch that closes to allow current flow in the forward direction, but opens to prevent current flow in the reverse direction. The diode thus acts like a unilateral circuit element providing an on-off characteristic.
Explain Hybrid Network in Standard Telephone hand set. Hybrid network: The hybrid network (sometimes termed as a duplex coil or hybrid coil) in a telephone set is a particula
what is cardinality ratio?
Cache-Only Memory Access Model (COMA) As we have discussed previous, shared memory multiprocessor systems may use cache memories with each processor for deducting the execution
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A header in CGI script can specify? A header into CGI script can give format of document and New location of perticular the document.
What is co-operative process? A process is co-operating if it can affect or be affected by the other processes implementing in the system. Any process that share data with othe
SMTP Simple Mail Transfer Protocol, a protocol for sending e-mail messages among servers. Most e-mail systems that send mail over the Internet use SMTP to send messages from si
Q. Programming with loops and comparisons? This segment deals with more practical illustrations employing comparison, loops and shift instructions. Simple Program Loops
What are the Process states? By the courses of implementation, processes change state. Status of a process is express by its present activity. Dissimilar practical states of
What is the purpose of guard bits used in floating point operations? The guard bits are the extra bits which are used to retain the in-between steps to enhance the accuracy in
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