CN2309024Y - Loudspeaker high-pass filter of unpassing capacitor - Google Patents

Abstract

The utility model relates to a loudspeaker high-pass filter without capacitors, which is mainly composed of resistors and inductances, wherein, the resistors are connected to the input end of a circuit in series, the inductances are connected to the output ends of the resistors in parallel, and the resistors and the inductances completely replace capacitors in an original circuit. As capacitance elements which influence the efficiency of a sound splitter and the tone of a whole sound box system are not adopted and the high-pass filtering circuit is adopted, the utility model has the advantages that the audio electric signals seldom generate drifting, the audio signals which are output to loudspeakers are complete, the tone quality of the sound box system is good, the circuit is simple, the price is low, etc. The utility model overcomes the defects of the prior art.

Description

A kind of loud speaker high pass filter that does not pass through electric capacity

The utility model relates to the filter circuit of loud speaker in a kind of audio amplifier, specifically refers to a kind of loud speaker high pass filter that does not pass through electric capacity.

Sound equipment partial device is used in the sound box system, bearing audio signal is being separated, be sent to high pitch and bass unit or high pitch, middle pitch and bass unit respectively, traditional partial device extensively utilizes the logical high frequency of capacity cell, the performance of resistance low frequency, by being connected on high pitch or the mediant trumpet to cut off low frequency signal.But because capacity cell is to be connected on the loudspeaker unit, the different poles earth effect of the inherent characteristic of its capacity cell and quality the performance of whole speaker system, as drift owing to capacity cell signal phase that electric charge accumulation effect causes, the disappearance and the dyeing of the details that the capacity loss effect is caused, all the quality of sound reproduction is subjected to deterioration inevitably.Raising along with people's living standard and appreciation level, this defective more and more is difficult to stand, some Fanciers are attempted by the method for changing high-quality element (buy your valency fever element) original equivalent element that replaces, and in the hope of improving its performance, but fail really to deal with problems after all.

The purpose of this utility model just is to provide a kind of loud speaker high pass filter that does not pass through electric capacity, with by abandoning the capacity cell that influences sound equipment partial device usefulness and whole sound box system tonequality, and when effectively keeping the function of use and advantage of prior art, advantages such as the sound signal that have the less generation of audio signal drift, exports loud speaker to is complete, sound box system tonequality is good and circuit is simple, cheap have overcome the deficiencies in the prior art preferably.

The purpose of this utility model realizes in the following manner: a kind of loud speaker high pass filter that does not pass through electric capacity, it is characterized in that above-mentioned high-pass filtering circuit is made up of resistance and inductance, wherein resistance string is coupled to circuit input end, and inductance then is parallel to the output of above-mentioned resistance.

Adopt the loud speaker high pass filter that does not pass through electric capacity of the present utility model, owing to adopted and thoroughly abandoned the capacity cell that influences sound equipment partial device usefulness and whole sound box system tonequality, and when effectively keeping the function of use and advantage of prior art, advantages such as the sound signal that also have the less generation of audio signal drift, exports loud speaker to is complete, sound box system tonequality is good and circuit is simple, cheap have overcome the deficiencies in the prior art preferably.

Description of drawings:

Fig. 1 is an embodiment circuit diagram of the present utility model;

Fig. 2 is the prior art circuits schematic diagram.

The 1-high-pass filtering circuit, 2-resistance, 3-inductance, 4-electric capacity.

Below in conjunction with drawings and Examples the utility model is described in detail.

As shown in Figure 1, a kind of loud speaker high pass filter that does not pass through electric capacity, it is characterized in that above-mentioned high-pass filtering circuit (1) is made up of resistance (2) and inductance (3), wherein resistance (2) is series at circuit input end, inductance (3) then is parallel to the output of above-mentioned resistance (2), and this resistance (2) and inductance (3) replace the electric capacity (4) in the primary circuit fully.

In primary circuit, the electric capacity that is adopted has the electrical characteristics of logical high frequency, resistance low frequency, thereby in sound equipment partial device, play a part the tonequality that stops low frequency signal to enter high pitch or mediant trumpet, pure high pitch or mediant trumpet, but because the capacity loss effect will cause the disappearance and the dyeing of audio frequency details, and capacity cell also is easy to generate electric charge accumulation effect and cause the drift of signal phase, and these all make the quality of sound reproduction be subjected to deterioration inevitably.The then less signal frequency phase place of passing through that makes of resistance circuit produces change or drift, inductive circuit characteristic in parallel then very little to the low frequency signal impedance, and high frequency or intermediate-freuqncy signal are produced bigger impedance, the combination of the two has reached the logical high frequency of original condenser network, the circuit characteristic of resistance low frequency fully, and has overcome the deficiency of original condenser network effectively.

Claims (1)

1. A kind of not loud speaker high pass filter by electric capacity is characterized in that above-mentioned high-pass filtering circuit (1) is made up of resistance (2) and inductance (3), the circuit input end that is series at of resistance (2) wherein, and inductance (3) then is parallel to the output of above-mentioned resistance (2).

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