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Model 200A Audio Oscillator, 1939 | HPE
https://www.hpe.com/us/en/about/history/innovation-gallery/002-product.html
Model 200A audio oscillator, 1939 An audio oscillator is an instrument that generates one pure tone or frequency at a time. Through the years, HP oscillators were used to design, produce and maintain telephones, stereos, radios and other audio equipment.
HP Virtual Museum: Model 200A audio oscillator, 1939 …
https://www.hp.com/hpinfo/abouthp/histnfacts/museum/earlyinstruments/0002/0002history.html
They built the first Hewlett-Packard oscillators in Dave's rented garage on Addison Avenue in Palo Alto, California. Their initial product was the 200A audio oscillator; It sold for $54.40. Similar equipment built by competitors cost between $200 and $600, a whopping price difference that generated a buzz very quickly.
Hewlett-Packard HP-200A audio oscillator
https://people.ohio.edu/postr/bapix/HP200A.htm
Like the other HP oscillators, the HP200A is a Wien bridge resistance-tuned audio oscillator using the light-bulb stabilized negative feedback circuit designed by William Hewlett while doing graduate work at Stanford. (Patent #2268872. Application filed in 1939 and granted in 1942).
Audio Oscillator 200A Equipment Hewlett-Packard, HP;
https://www.radiomuseum.org/r/hp_audio_oscillator_200a.html
The 200A audio oscillator of 1939 is the first product of Hewlett Packard (HP). A US patent Nr. 2268872 was granted to W.R. Hewlett in January 6th 1942, filed in July 11th 1939. An audio oscillator is an instrument that generates one pure tone or frequency at a time.
HP Virtual Museum: Model 200A audio oscillator, 1939
https://hp.com/hpinfo/abouthp/histnfacts/museum/earlyinstruments/0002/0002threeqtr.html
HP Virtual Museum: Model 200A audio oscillator, 1939 We use cookies to personalize content and ads, to provide social media features and to analyse our traffic. We also share information …
Model 200B audio oscillator, 1939 | HPE
https://www.hpe.com/us/en/about/history/innovation-gallery/008-product.html
Through the years, HP oscillators were used to design, produce and maintain telephones, stereos, radios and other audio equipment. In 1938, when the sound engineer for the movie Fantasia from the Walt Disney Studios saw the Model 200A audio oscillator in action, he asked Bill Hewlett to make some modifications to it, and the Model 200B was born.
hewlett-pa: The HP 200 Audio Oscillators Series
https://www.radiomuseum.org/forum/hewlett_pa_the_hp_200_audio_oscillators_series.html
The Model 200I is an oscillator of the band spread type. It is intended for interpolation work and for applications where it is necessary that the frequency of oscillation be known very accurately. These oscillators are supplied in a relay rack mounting, as the 200AR, 200BR, 200CR, 200DR, 202DR, and 200IR. Frequency Range:
the first computer was called the HP 200A Audio …
https://prezi.com/6yb_bg7r18jk/the-first-computer-was-called-the-hp-200a-audio-oscillator/
The first computer was called the HP 200A Audio Oscillator. It was made by David Packard and Bill Hewlett. The HP 200A Audio Oscillator, which rapidly becomes a popular piece of test equipment for engineers. Walt Disney Pictures ordered eight of the 200B model to use as sound effects generators for the 1940 movie “Fantasia.”
HP 200A Manual - The Hewlett Packard Archive
http://www.hparchive.com/Manuals/HP-200A-Manual-1951.pdf
The Model 200A Audio Oscillator is a general purpose oscillator which uses the resistance-tuned circuit to generate alternating current voltages from 35 to 35,000 cycles/sec. This audio oscillator provides a source of voltage for amplifier testing, audio response &-Ea~smi4&szBc,.
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