1947
me!!
The sound amplifier was invented by Lee de Forest.
Dominic Zacchanino invented the first amplifier for the accordion in New Jersey. He is my second cousin and the name of the amplifier was shortened to "Sano".
Nobody invented the op-amp but manufactures decided that an amplifier can be more efficient as opposed to building the same amplifier out of discreet components
I dont know his first name but his last name was harker.
An audion tube is an electric amplifier device invented in 1906, as the forerunner of the triode.
He is an American electrical engineer and he invented the negative feedback amplifier in 1927.
Lee de Forest was born in Council Bluffs Iowa on Aug 26 1873 he invented the audion in 1906
Darlington amplifier has more gain when compared to cascade amplifier .
1.differential amplifier 2.operational amplifier 3.instrumentation amplifier 4.chopper amplifier 5.isolation amplier
current series feedback amplifier=series parallel feedback amplifier or voltage to current amplifier,or TRANS CONDUCTANCE AMPLIFIER.
Selective amplifier is an RF amplifier which selects particular frequency and amplifier so it can operate at fixed frequency.