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soljon (Aeronautics)
12 Jan 03 7:12
Dear sir,
what is diode characteristics?
and why it is forward biased for proper functioning?
IRstuff (Aerospace)
12 Jan 03 13:16
The diode, as a zero-order approximation, can be considered to be a one-way current flow device that allows current to flow from the anode to the cathode but not in reverse.
As first-order model, the diode forward current is modeled as I=Is*exp(V/kt), and therefore has a logarithmic current vs. voltage characteristic. For currents in the range of >1uA in typical diode, this results in an apparent voltage threshold of around 0.5 to 0.7 volts.
Typical diodes have reverse breakdown voltages anywhere from 5 to 100 volts, depending on the application and construction of the diode. Reverse breakdown is the reverse-bias threshold above which the diode experiences avalanche multiplication of carriers in the depletion region. 字串3
TTFN
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