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The HP 200A, first built in 1938, was the first product [1] made by Hewlett-Packard and was manufactured in David Packard's garage in Palo Alto, California. It was a low-distortion audio oscillator used for testing sound equipment. It used the Wien bridge oscillator circuit, that had been the subject of Bill Hewlett's masters thesis.
Bill Hewlett and Dave Packard were proud of their company culture which came to be known as the HP Way. The HP Way is a corporate culture that claimed to be centered not only on making money but also on respecting and nurturing its employees. Hewlett was president of the Institute of Radio Engineers in 1954. [5]
Hewlett and Packard began to use the one-car garage, with $538 (equivalent to $11,645 in 2023) in capital. In 1939, Packard and Hewlett formed their partnership with a coin toss, creating the name Hewlett-Packard. Hewlett-Packard's first product, built in the garage, was an audio oscillator, the HP200A. [8]
HP was founded way back in 1939, and Jobs admired the innovation that the company stood for back in his day, even saying he idolized Bill Hewlett and Dave Packard. Apple wouldn't be founded until ...
Hewlett and Packard's first financially successful product was a precision audio oscillator known as the HP 200A, which used a small incandescent light bulb (known as a "pilot light") as a temperature dependent resistor in a critical portion of the circuit, and a negative feedback loop to stabilize the amplitude of the output sinusoidal waveform.
David Packard (/ ˈ p æ k ər d / PAK-ərd; September 7, 1912 – March 26, 1996) was an American electrical engineer and co-founder, with Bill Hewlett, of Hewlett-Packard (1939), serving as president (1947–64), CEO (1964–68), and chairman of the board (1964–68, 1972–93) of HP.
Hewlett’s big breakthrough was to stabilize the amplitude of his oscillator by servoing the gain to keep the amplifier in its linear range. Hewlett’s use of a light bulb was an inspired example of lateral thinking. The light bulb served as a detector, low pass filter and a gain-controlling element and you can say that.
In this version of the oscillator, Rb is a small incandescent lamp. Usually R1 = R2 = R and C1 = C2 = C. In normal operation, Rb self heats to the point where its resistance is Rf/2. A Wien bridge oscillator is a type of electronic oscillator that generates sine waves. It can generate a large range of frequencies.