It used the Wien bridge oscillator circuit, that had been the subject of Bill Hewlett ‘s Masters thesis. This page was last edited on 16 October , at From Wikipedia, the free encyclopedia. Read a story on the 60th anniversary of the patent for the A originally published on hp NOW, an internal HP web site. Retrieved from ” https: Frequency and amplitude stabilization of an oscillator with no tube overloading. You can help Wikipedia by expanding it.
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Bill had the innovative, elegant and practical idea of using a light bulb in a Wein bridge oscillator circuit to solve the problem of how to regulate the output of the circuit without causing distortion. The Model A was HP ‘s first product. Retrieved from ” https: From Wikipedia, the free encyclopedia.
It used the Wien bridge oscillator circuit, that had been the subject of Bill Hewlett auudio Masters thesis. The latter is a key technique for achieving a low distortion oscillator. Earlier, Meacham had used light bulbs in bridge ho to stabilize and linearize oscillators in It was a low-distortion audio oscillator used for testing sound equipment. Views Read Edit View history. Uses tungsten lamp to balance bridge. By the clever use of the light bulb, Bill was able to simplify the circuit, improve the oscillator’s performance and reduce the price.
HP Virtual Museum: Model A audio oscillator,
You can help Wikipedia by expanding it. You can download the latest version or download a version with accessibility features. Frequency and amplitude stabilization of an oscillator with no tube overloading.
Ho QuickTime plug-in is needed to view this presentation. This electronics-related article is a stub. The product code was chosen to give the impression that HP was an established company.
The circuit diagram is shown in Hewlett’s patent. Bill and Dave made the first of these in the garage behind Dave’s house and baked the paint on the panels in Lucile Packard’s oven. In other projects Wikimedia Commons. The CD became a ubiquitous audio generator in engineering laboratories worldwide from the s to the s.
An audio audik is an instrument that generates one pure tone or frequency at a time. Dubbed the A to make it seem like the company had been around for a while, this instrument represented the first low-cost method of measuring audio frequencies.
Acrobat Reader is a free plug-in. Read a story on the 60th anniversary of the patent for the A originally published on hp NOW, an internal HP web site. Other oscillators that were available at that time were costly and unstable.
It was also the first such commercial oscillator to use a simple light bulb as the temperature-dependent ho in its feedback network.
Free download hp audio drivers windows 7 – Hewlett Packard – Laptop Tech Support
Using this site means you accept its terms. In a letter, Dave described Hewlett’s audio oscillator as “the foundation on which Hewlett-Packard Company was able to grow into the largest manufacturer of electronic instruments in the world, the keystone that allowed four and one-half decades of major contributions to electronic measurement technology and equipment.
Through the s and into the s, the subsequent versions of the A covered different and wider frequency ranges. About us All of HP U.
Lucile claimed the roast beef never tasted right after Bill and Dave started using the oven as HP’s first ajdio facility.
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