User:Saidi sosoush

OP AMP HISTORY

The op-amp's history begins back in the vacuum tube era and continues until today. While most of today's op-amp users are probably somewhat familiar with integrated circuit (IC) op-amp history, considerably fewer are familiar with the non-IC solid-state op-amp. And, even more likely, very few are familiar with the origins of the op-amp in vacuum tube form, even if they are old enough to have used some of those devices in the 50's or 60's.