Regulating device for a telephone loud-speaker

Details Regulating device for a telephone loud-speaker Regulating device for a telephone loud-speaker

1993-01-28

1996-07-30

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

327172, 327178, 327132, 327131, 379394, 379398, 332109, H03K 708, H03K 501

Patent

active

055415431

ABSTRACT:
A fixed impedance load is provided with a signal having a variable frequency F from a line capable of supplying a variable available power. The device comprises a pulse width modulator that operates at frequency F and supplies the load with pulses, the width of which varies in the same way as the available power, so that the consumed power on the line remains lower than the available power.

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