HP200A

The HP200A was the first product that has been manufactured by Hewlett- Packard in the garage of David Packard in Palo Alto in 1939. It is an audio frequency generator, which was used for the testing of electronic audio systems. A special feature of this oscillator used in the circuit, a light bulb as a temperature -stabilized electrical resistance in order to minimize thermal interference effects to the generated tone frequencies.

The product HP200A was chosen to give the impression that HP is already an established company. The first customer of Walt Disney Studios, which purchased eight HP200A audio frequency and appeared in the production of 1940, first recorded in multi -channel sound system animated film Fantasia are inserting.