Paz first started his career at Bell Labs as an intern from December 1950 to April 1952 as an Engineering Aid.
Paz was assigned to determine the effects of several variables on a transistor's noise factor at various radio frequencies.
RCA took interest in Paz's design and made their subsidiary National Broadcasting Company aware of the new microphone.
It was after understanding the theory of the switching circuits that Paz invented the direct-coupled "Triplet", which is a three-stage linear amplifier which uses only one resistor per transistor amplification stage.
The direct-coupled amplifier is also the basis for Philco's Mark I hearing aid, which used the circuit built with silicon alloy transistors.
This research resulted in new circuitry that Paz designed and was featured in RCA's internal academic journal, the Industry Service Laboratory.
[2] Paz later on published his design with the International Radio Engineers and presented his findings at the IRE convention in 1957.
The low distortion transistor power amplifier was published in the Electronics Industries magazine and Paz presented his findings at the National Convention of IRE in 1959.