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HP Archive
http://hparchive.com/Manuals/HP-201C-Manual.pdf
The Hewlett-Packard Company certifies that this instrument was ... The Model 201C Audio Oscillator (Figure 1-l), has been designed for a general purpose, audio testing and ... Refer to the schematic diagram and proceed as follows: a. Remove the two bare wire jumpen from the
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.
Audio & Test Oscillator - HP Memory Project
https://www.hpmemoryproject.org/wb_pages/wall_b_page_10a.htm
The HP 204B, First Full Transistor Audio Oscillator . Introduced in the 1961 catalog, the 204B was the very first fully transistorized and battery-operated HP audio oscillator.
Early Audio Oscillators - HP Memory Project
http://www.hpmemoryproject.org/wa_pages/wall_a_page_01.htm
The lowest-frequency HP oscillator using the RC, Wien-bridge tuning circuit concept of Bill Hewlett is the Model 202B which operates from 1/2 Hertz to 50 kHz, in four ranges. To tune down to 0.5 Hertz, using a variable capacitor as the tuning element, requires a very large value for this capacitor in the oscillator circuit.
Free HP Agilent Diagrams, Schematics, Service Manuals ...
https://www.schematicsunlimited.com/h/hp-agilent
HP Agilent Diagrams, Schematics and Service Manuals - download for free! Including: 87204 87206a 252cb 252cc multiport coaxial switches dc to 4 ghz 252c dc to 20 ghz 252c dc to 26.5 ghz technical ov 5965 3309e c20140623, agilent 2000x 3000x series oscilloscope readme 0237 release notes for 2000 3000 x series oscilloscope firmware (version 2.37) c20140702, agilent …
Hewlett-Packard HP-200C audio oscillator - Ohio University
https://people.ohio.edu/postr/bapix/HP200C.htm
So -hp- engineers set out to design and perfect an audio-frequency oscillator which would combine the high stability and very wide range of the coil-condenser type with the flexibility of operation of the best frequency type. The result is the basically new Resistance-tuned Audio-frequency Oscillator, based on a new fundamental circuit and ...
Model 200A Audio Oscillator, 1939 | HPE
https://www.hpe.com/us/en/about/history/innovation-gallery/002-product.html
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. The Model 200A began as the subject of Bill Hewlett's master's thesis at Stanford University in the late 1930s.
Hewlett-Packard HP-200A audio oscillator - Ohio University
https://people.ohio.edu/postr/bapix/HP200A.htm
Hewlett-Packard's first product, the HP-200A audio oscillator. After repairing several other Hewlett Packard oscillators such as the HP-200C , the HP-200CD , and the HP-200AB , I chanced upon this HP-200A which is the company's original product. (Link is …
Three New hp Audio Oscillators - Vintage 1956-02
https://www.radioexperimenter.us/1956-02/three-new-hp-audio-oscillators.html
Three New hp Audio Oscillators. Last Updated on Sun, 20 Dec 2020 | Vintage 1956-02. YEAR after year the simple, reliable ~hp-R-C audio oscillator remains one of the work horses of the electronics laboratory. The Hewlett-Packard Company has always taken special pride in the R-C oscillator and has always striven to see that suitable R-C oscillators.
HP Equipment Manuals - The Hewlett Packard Archive
http://hparchive.com/hp_equipment
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