Answer Posted / vinit92
transistor is a semiconductor device
it has a three terminal -collector , emitter and base
out of base is a control terminal .
a signal of small amplitude applied to the base is available
in the magnified form at the collector of the transistor.
this is the amplification.the word transfer + resistor is
called transistor .""" which is the transfer of an input
signal current from a low resistance circuit to high
resistance circuit """ before invention of transistor vaccum
tube was used for amplification .
transistor is more desirable than the vaccum tube because
it has a
- small size and ruggedness
-operate at low voltage
-higher frequency
-don't require any filament power
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