Process and device for converting a periodic LF electric voltage

Details Process and device for converting a periodic LF electric voltage Process and device for converting a periodic LF electric voltage

1982-05-12

1984-07-17

Pellinen, A. D.

179111R, H04R 1902

Patent

active

044608098

ABSTRACT:
A process and a device for converting a periodic LF voltage into sound waves, or vice versa. The electro-acoustic transducer device has two groups of substantially parallel points which are separated by insulating screens. The points of each group are respectively connected to the positive terminal and to the negative terminal of a source of DC voltage, of the order of 10,000 volts, which renders the points emitters of an ion plasma. The DC voltage is modulated by a periodic LF voltage. The ion plasma oscillates and creates sound waves which analogically reproduce the LF voltage. This technology is particularly applicable to the construction of loud-speakers.

REFERENCES:
patent: 1758993 (1930-05-01), Wolff
patent: 3018394 (1962-01-01), Brown
patent: 3476887 (1969-11-01), Seligson et al.
patent: 4308431 (1981-12-01), Hanbicki
G. Shirley, "The Corona Loudspeaker", Radio and Television News, Oct. 1956, pp. 57-59.

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