CN2643589Y

CN2643589Y - A capacitance resistance coupling frequency-divider for treble

Info

Publication number: CN2643589Y
Application number: CN 03266960
Authority: CN
Inventors: 方晓林
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-26
Filing date: 2003-06-26
Publication date: 2004-09-22
Anticipated expiration: 2013-06-26

Abstract

The utility model is an alt RCCPLD (capacitive resistance coupling) frequency demultiplier. The alt part of the frequency demultiplier of the stereo system of the prior art adopts capacity coupling, and thereby having the shortcoming of phase-shift distortion, which leads to unclear sound. The utility model is characterized in using the capacitive resistance coupling instead of the capacity coupling in connection of frequency dividing circuit, and thereby having the advantage of removing phase-shift distortion and making the tone of the sound box pure and clear.

Description

A kind of high pitch frequency divider of resistance-capacitance coupling

Technical field:

The utility model relates to a kind of high pitch frequency division part of loudspeaker enclosure divider.

Background technology:

Existing sound equipment frequency divider high pitch partly adopts capacitive coupling, and the shortcoming of this mode is to bring phase-shift distortion, phase-shift distortion to cause sound unintelligible easily.

The utility model content:

The purpose of this utility model provides a kind of elimination phase-shift distortion, makes the pure transparent frequency divider of high pitch of audio amplifier.

The purpose of this utility model is achieved like this:

The utility model is to adopt resistance-capacitance coupling to substitute capacity coupled frequency dividing circuit annexation, and the specific design principle is as follows:

Signal uses R2 and L1 filtering low frequency partly through resistance capacitance R1, C1 coupling then, and remaining medium-high frequency is partly taken out on R2 top, passes to L2 filtering intermediate-freuqncy signal through R3, and last signal is given loudspeaker through decaying to the designing requirement rear feed.

Because high pitch frequency division particular job condition partly must add external radiator, the heat when working with the element that leaves could guarantee the audio amplifier operate as normal like this.

C2, C3, R5 are fine adjustment tone color and frequency curve, and adjusting C2, C3, R5 can change tone color, to satisfy the requirement of different sound styles.

Compare with existing technology, the utlity model has following advantage:

Can eliminate phase-shift distortion, make the high pitch of audio amplifier pure transparent, be provided with the circuit of fine adjustment tone color and frequency curve in addition.

Description of drawings:

Fig. 1 is the heat spreader structures schematic diagram;

Fig. 2 is the utility model circuit theory diagrams;

Embodiment:

According to accompanying drawing the utility model is further described below:

Referring to Fig. 1, Fig. 2, be fixed with radiator 2 on the audio amplifier backboard 1 in the present embodiment, under the radiator audio amplifier terminal box 3.R1, C1 and tie-point and R3, R2 contact mutually connect, the L1 R5 and in parallel that connects with C2 and interface string R2, C3 with L2, and R4 connects with loudspeaker.

Claims

1, a kind of high pitch is made up of resistance R 1, R2, R3, R4, R5 capacitor C 1, C2, C3 inductance L 1, L2 with the frequency divider of resistance-capacitance coupling, and it is characterized in that: the input at circuit is provided with the resistance R 1 that is in parallel with capacitor C 1.

2, a kind of high pitch according to claim 1 is characterized in that: be outside equipped with radiator (2) at audio amplifier with the frequency divider of resistance-capacitance coupling.