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Main History About Op Amp

a. The first Op-Amps were invented during the time of the Second World War

b. Dr. C. A. Lovell of Bell Telephone Laboratories introduced the Op-Amp

c. George A. Philbrick independently introduced a single vacuum tube operational amplifier in 1948

d. The ever-popular 741 monolithic Op-Amp was designed by Dave Fullagar in 1967


The First "Real" OpAmp -> The K2-W


The K2-W Tube OpAmp

a. Invented by Julie Loebe and George Philbrick (early 1950's)

b. The first "mass production" OpAmp

c. Cost (in 1950's) approximately $22.00

d. Basic specifications comparison to 741 and LT1037

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Main History About Op Amp