H - Electricity – 03 – G
Patent
H - Electricity
03
G
330/103, 179/38
H03G 3/04 (2006.01) H03G 3/00 (2006.01) H03G 5/00 (2006.01) H03G 5/04 (2006.01)
Patent
CA 1175505
PHD 80141C 14 ABSTRACT: The invention relates to a control device cir- cuit, specifically a low-noise treble or bass-control device, which is digitally controllable in a simple man- ner. It comprises an amplifier, whose output is connected to the series arrangement of a capacitor and a tapped resistor chain, the taps of said resistor chain being con- nected to an inverting input of the amplifier via a first switch and to the output of the control device via a second switch.
387125
Dijkmans Eise C.
Graffenberger Wilhelm
Kilian Ernst-August
Van de Plassche Rudy J.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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