Inventor of the operational amplifier
Karl Dale Swartzel Jr. (June 19, 1907 – April 23, 1998) was the inventor of the operational amplifier (or 'opamp'). He filed the patent for the 'summing amplifier' in 1941 when working at Bell Labs.
Karl Swartzel: The Father of the Operational Amplifier
Karl Dale Swartzel Jr. is credited with inventing the operational amplifier, commonly known as the op-amp. While working at Bell Labs in 1941, he filed a patent for the 'summing amplifier', which laid the foundation for this ubiquitous electronic component.