audio-frequency oscillator
Date1940-1945
Inventory NumberWJ1073
ClassificationOscillator
Subject
Maker
Hewlett-Packard Company
1939-present
User
Psycho-Acoustic Laboratory, Harvard University
1940 - 1962
Cultural Region
Place of Origin
Place of Use
Dimensions17.6 x 23.1 x 38.8 cm (6 15/16 x 9 1/8 x 15 1/4 in.)
Material
DescriptionModel 200B oscillator. A metallic box with three dials: frequency range, frequency, and volume. An on/off switch, a control light and two sockets. Its nominal frequency range is 0-20,000 Hz.
P.A.L. Serial # 110 has plug written on top in red: "76-8-737 Tr-HU-2/7/61"
P.A.L. Serial # 110 has plug written on top in red: "76-8-737 Tr-HU-2/7/61"
Signedon plaque: AUDIO OSCILLATOR / MODEL 200B / HEWLETT PACKARD / PALO ALTO / CALIFORNIA
FunctionThis device generates an audio signal of a specific frequency that the user sets on the knobs.
According to the HP website, "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. Disney ordered eight of the Model 200B at $71.50 each.
Disney engineers used HP 200B oscillators to test the various channels, recording equipment and speaker systems in the 12 specially equipped theaters that showed Fantasia in 1940."
For more information, see the official HP website.
According to the HP website, "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. Disney ordered eight of the Model 200B at $71.50 each.
Disney engineers used HP 200B oscillators to test the various channels, recording equipment and speaker systems in the 12 specially equipped theaters that showed Fantasia in 1940."
For more information, see the official HP website.
Hewlett-Packard Company
Date: circa 1957
Accessories: Power cord protruding from back
Object number: WJ1054
General Radio Company
Date: circa 1935
Accessories: power cord
Object number: 1997-1-0355
General Radio Company
Date: 1939
Object number: RS0452
Hewlett-Packard Company
Date: circa 1970
Accessories: Power cord, 3-pronged plug and socket.
Object number: WJ1098
Weston Electrical Instrument Corporation
Date: circa 1923
Accessories: tapping key; notebook by F. A. Pattie
Object number: WJ0142
Date: 1890-1930
Object number: RS0505
General Radio Company
Accessories: 1 battery (removed during FAE inventory, 2011).
Object number: RS0260