JPH02106792U

JPH02106792U -

Info

Publication number: JPH02106792U
Application number: JP1510789U
Authority: JP
Priority date: 1989-02-10
Filing date: 1989-02-10
Publication date: 1990-08-24
Anticipated expiration: 2004-02-10
Also published as: JPH0718232Y2

Description

[Brief explanation of drawings]

第１図は本考案による音響振動装置の一実施例
の回路図、第２図は同実施例の機械部分の部分省
略縦断面図である。１０……筒状体、１４……加振手段、２０，２
２，２４……トランジスタ（可変抵抗手段）、３
２……制御手段、３４，３６，３８……制御信号
発生手段、４０……ＩＣ（比較手段）。 FIG. 1 is a circuit diagram of an embodiment of an acoustic vibration device according to the present invention, and FIG. 2 is a partially omitted vertical sectional view of a mechanical portion of the same embodiment. 10... Cylindrical body, 14... Vibration means, 20, 2
2, 24...transistor (variable resistance means), 3
2...control means, 34, 36, 38...control signal generation means, 40...IC (comparison means).

Claims

[Claims for Utility Model Registration] (1) A cylindrical body, an excitation means provided within the cylindrical body whose vibration is changed according to the magnitude of the supplied current, and a cylindrical body connected in series with the excitation means. are connected to each other and each has a control terminal, and when a first control signal is supplied to this control terminal, the first resistance state is set, and when the second control terminal is supplied to the control terminal, the first resistance state is set. a parallel circuit in which at least two first and second variable resistance means are connected in parallel to reach a second resistance state in which the resistance value is smaller than the first variable resistance when the audio signal is smaller than the first threshold; supplying a first control signal to a control terminal of the first variable resistance means; and supplying a second control signal to a control terminal of the first variable resistance means when the audio signal is greater than a first threshold and less than a second threshold;
and when the audio signal is greater than a second threshold value and less than a third threshold value, a second control signal is supplied to the control terminal of the first variable resistance means, and the second variable resistance means is supplied with a control signal. the first to the control terminal of the means;
control means configured to supply a control signal to the control terminals of the first and second variable resistance means when the audio signal is greater than a third threshold; Acoustic vibration device. (2) The control means includes a comparison means and a control signal generation means, and the comparison means has at least four output terminals, first to fourth, and the audio signal is higher than the first threshold. When the audio signal is smaller than the first threshold, the first output terminal is in the first state and the second to fourth output terminals are in the second state, and when the audio signal is larger than the first threshold and smaller than the second threshold. Second
The output terminals of the first, third and fourth
The output terminal of the output terminal is set to a second state, and when the audio signal is larger than the second threshold value and smaller than the third threshold value, the second and third output terminals are set to the first state, and the first and fourth output terminals are set to the first state. The output terminal is set to a second state, and when the audio signal is larger than a third threshold, the second and fourth output terminals are set to the first state, and the first and third output terminals are set to the second state. The control signal generating means is configured such that the control signal generating means is connected to the first and second
a first current-carrying element connected between the output terminals of the first variable resistance means and the control terminal of the first variable resistance means; and between the third and fourth output terminals of the comparison means and the control terminal of the second variable resistance means. a second energizing element connected to
at least a first control signal for supplying a first control signal to a control terminal of the first variable resistance means when the first output terminal is in the first state; supplying a second control signal to the control terminal of the variable resistance means; supplying the first control signal to the control terminal of the second variable resistance means when the third control terminal is in the first state; and supplying the first control signal to the control terminal of the second variable resistance means; 2. The acoustic vibration device according to claim 1, wherein the second control signal is supplied to the control terminal of the second variable resistance means when the control terminal is in the first state.