Loudspeaker overload protection circuit

Details Loudspeaker overload protection circuit Loudspeaker overload protection circuit

1979-01-05

1981-10-20

Morrison, Malcolm A.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307558, 340661, 361 93, H04R 300, H03K 508

Patent

active

042962781

ABSTRACT:
The output of an audio power amplifier fed to a loudspeaker driver is sensed and when this output exceeds a predetermined level, a switch control circuit operates to place a current limiting device, such as a power resistor, in series with one of the driver feed lines, thereby reducing the power fed thereto. An indicator may also be provided to indicate when the overload condition exists. Operation is made more accurate and distortion minimized by employing separate sensing and power channels in the circuit, the first of these channels operating to sense the overload while the second of these channels utilizes a portion of the amplifier output for driving the switch control circuit for placing the power limiter in the speaker line. The sensing channel is designed to sense the average voltage of the amplifier output, thus providing control more directly responsive to power. The power channel is designed to use audio power from the amplifier output only occasionally, thus producing a minimum of distortion.

REFERENCES:
patent: 3544720 (1970-12-01), Corderman
patent: 3794765 (1974-02-01), Goodwater

Affiliated with

Also associated with

Rating

Loudspeaker overload protection circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Loudspeaker overload protection circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Loudspeaker overload protection circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1492521