Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1990-02-09
1991-07-30
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307310, 307493, 330289, 330105, 330112, H03K 3013, H03K 3023, H03K 1714
Patent
active
050362283
ABSTRACT:
A temperature compensation circuit used in a negative impedance driving apparatus such as an amplifier for driving a speaker as a load. A current flowing through the load is detected by a detection element connected to the load, and fed back therefrom, so that negative impedance driving is effected on the load. The detection element is set its temperature coefficient to be equal to or slightly larger than a temperature coefficient of the load, thereby the positive feedback gain is changed upon changing the temperature of the load so that negative impedance driving state is compensated. In another aspect of the invention, a temperature sensitive element or temperature detecting element for sensing or detecting the temperature of the detection element is arranged to change the positive feedback gain and compensate the negative impedance driving state.
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Miller Stanley D.
Tran Toan
Yamaha Corporation
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