CN207518583U - A kind of mobile phone circuit with reply of uttering long and high-pitched sounds - Google Patents

Abstract

The utility model provides a kind of mobile phone circuit with reply of uttering long and high-pitched sounds, voicefrequency circuit provides power supply to receiver MIC, and audio signal is handled, capacitance C1, capacitance C3, capacitance C4 is power filtering capacitor, capacitance C5, capacitance C6 is signal filter capacitor, capacitance C2 is signal coupled capacitor, voltage-stabiliser tube DZ plays clamping action, by Send button, the howling of the 18K hertz of sinusoidal generation circuit output, power amplification and A/D conversions are completed in voicefrequency circuit, form audio digital signals, re-form baseband signal, electromagnetic wave is coupled by antenna after radio circuit is handled, to Base Transmitter, harassing and wrecking person or swindler is made to receive whistler.By above-mentioned in this way, harassing and wrecking person or swindler is made not to feel well, so as to reduce or terminate harassing and wrecking and swindle.

Description

A kind of mobile phone circuit with reply of uttering long and high-pitched sounds

Technical field

The utility model is related to field of mobile phones, specifically a kind of mobile phone circuit with reply of uttering long and high-pitched sounds.

Background technology

In the routine use of mobile phone, harassing call or fraudulent call are usually received, user is pestered beyond endurance, therefore develops A kind of mobile phone circuit with reply of uttering long and high-pitched sounds is very necessary.

Invention content

The purpose of this utility model is to provide a kind of mobile phone circuits with reply of uttering long and high-pitched sounds, and are generated using sine

Circuit, voicefrequency circuit, receiver and send button utter long and high-pitched sounds a kind of mobile phone electricity with reply of uttering long and high-pitched sounds of reply Road.This mobile phone circuit with reply of uttering long and high-pitched sounds can send whistler, harassing and wrecking person or swindler be made not to feel well, so as to reduce Or terminate harassing and wrecking and swindle.

The utility model includes sinusoidal generation circuit, voicefrequency circuit, receiver and send button, used technical solution It is：The P9 ends of voicefrequency circuit IC1 and one end of capacitance C1, one end of capacitance C3, one end of capacitance C4, receiver MIC 4 ends Be connected, the other end of capacitance C1 is connected and is grounded with the other end of the other end of capacitance C3, capacitance C4,1 end of receiver MIC and One end of analog switch IC3 is connected, the other end of analog switch IC3 and one end of analog switch IC5, voltage-stabiliser tube D_ZCathode, One end of capacitance C6, one end of capacitance C5, capacitance C2 one end be connected, the other end of capacitance C2 and the T9 ends of voicefrequency circuit IC1 It is connected, voltage-stabiliser tube D_ZAnode be connected and be grounded with the other end of the other end of capacitance C6, capacitance C5, analog switch IC5's is another One end and the U in sinusoidal generation circuit IC2_outEnd is connected, and one end of the R7 in sinusoidal generation circuit IC2 is with analog switch IC5's Control terminal, one end of resistance R1, the input terminal of NAND gate circuit IC4, send button one end be connected, NAND gate circuit IC4's Output terminal is connected with the control terminal of analog switch IC3, and the other end ground connection of resistance R1, the other end of send button is with resistance R2's One end, resistance R3 one end be connected, the other end of resistance R2 ground connection, the other end and the power supply+V of resistance R3_ccIt is connected.

The utility model makes harassing and wrecking person or swindleness by using sinusoidal generation circuit, voicefrequency circuit, receiver and send button The person of deceiving does not feel well, so as to reduce or terminate harassing and wrecking and swindle.

Description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is the structure diagram of the utility model.

Specific embodiment

Shown in Fig. 1：The P9 ends of voicefrequency circuit IC1 and one end of capacitance C1, one end of capacitance C3, capacitance C4 one end, by 4 ends of words device MIC are connected, and the other end of capacitance C1 is connected and is grounded with the other end of the other end of capacitance C3, capacitance C4, called 1 end of device MIC is connected with one end of analog switch IC3, the other end of analog switch IC3 and one end of analog switch IC5, voltage stabilizing Pipe D_ZCathode, one end of capacitance C6, one end of capacitance C5, capacitance C2 one end be connected, the other end and audio-frequency electric of capacitance C2 The T9 ends of road IC1 are connected, voltage-stabiliser tube D_ZAnode be connected and be grounded with the other end of the other end of capacitance C6, capacitance C5, simulate The other end and the U in sinusoidal generation circuit IC2 for switching IC5_outEnd is connected, one end of the R7 in sinusoidal generation circuit IC2 and mould Intend the switch control terminal of IC5, one end of resistance R1, the input terminal of NAND gate circuit IC4, send button one end be connected, it is and non- The output terminal of gate circuit IC4 is connected with the control terminal of analog switch IC3, the other end of resistance R1 ground connection, send button it is another End is connected with one end of resistance R2, one end of resistance R3, the other end ground connection of resistance R2, the other end and the power supply+V of resistance R3_cc It is connected.

The operation principle of the utility model is as follows：Sinusoidal generation circuit IC2 generates 18K hertz of howling, voicefrequency circuit IC1 is handled audio signal by T9 ends, voicefrequency circuit IC1 by P9 ends to receiver MIC provide power supply, capacitance C1, Capacitance C3, capacitance C4 are power filtering capacitor, and capacitance C5, capacitance C6 are signal filter capacitor, and capacitance C2 is signal coupled capacitor, Voltage-stabiliser tube D_ZClamping action is played, reasonably selects the size of resistance R2 and resistance R3, makes send button and the company of resistance R2, resistance R3 The level of contact is high level.

When send button is not closed, since one end of R1 is grounded, sine generation circuit IC2 does not work, and simulates Switch IC5 is not turned on, and NAND gate circuit IC4 input terminals are low level, and NAND gate circuit IC4 exports high level, therefore simulation is opened IC3 conductings are closed, the sound of people becomes analog electrical signal from receiver MIC, the T9 ends of voicefrequency circuit IC1 are coupled to through capacitance C2. Power amplification and A/D conversions are completed in voicefrequency circuit IC1, audio digital signals is formed, baseband signal is re-formed, through radio frequency electrical Electromagnetic wave is coupled by antenna after the processing of road, to Base Transmitter, so as to complete normally to converse.

During mobile phone use, when the phone for finding to be connected to is harassing and wrecking or fraudulent call, cellie presses immediately Send button.At this point, the input terminal of NAND gate circuit IC4 becomes high level, output becomes low level, makes analog switch The control terminal of IC3 is low level, and analog switch IC3 is disconnected.The high level come simultaneously through send button transmission is applied to sinusoidal production One end of resistance R7 in raw IC circuit 2, makes sinusoidal generation circuit IC2 work, and 18K hertz of sine wave of uttering long and high-pitched sounds is generated, by just The U of string generation circuit IC2_outEnd output.Since the control terminal of analog switch IC5 becomes high level, analog switch IC5 is connected, just The U of string generation circuit IC2_outHold the T9 that is coupled to voicefrequency circuit IC1 of the acoustical signal through capacitance C2 that utter long and high-pitched sounds of the 18K hertz of output End completes power amplification and A/D conversions in voicefrequency circuit IC1, forms audio digital signals, baseband signal is re-formed, through penetrating Electromagnetic wave is coupled by antenna after frequency circuit processing, to Base Transmitter, harassing and wrecking person or swindler is made to receive whistler, so as to feel To discomfort.

In this way, by using sinusoidal generation circuit, voicefrequency circuit, receiver and send button, make harassing and wrecking person or swindler It does not feel well, so as to reduce or terminate harassing and wrecking and swindle.

During implementation, voicefrequency circuit IC1, capacitance C1, capacitance C2, capacitance C3, capacitance C4, capacitance C5, capacitance C6, voltage-stabiliser tube D_Z Model and parameter and document（Zhang Xueyi is edited, mobile phone detection and maintenance items study course, China Machine Press, 2015 6 Month, page number P116-P117）Identical, i.e. voicefrequency circuit IC1 is the U900 in L7 mobile phones, and capacitance C1 is 4.7 μ f, and capacitance C2 is 0.1 μ f, capacitance C3 are 33pf, and capacitance C4 is 10pf, and capacitance C5 is 10pf, and capacitance C6 is 33pf, voltage-stabiliser tube D_ZFor the steady of 6.93V Pressure pipe, resistance R1 are 200K, and resistance R2 is 200K, and resistance R3 is that 20K, analog switch IC3 and analog switch IC5 are integrated electricity Road CD4066, NAND gate circuit IC4 are using integrated circuit CD4011, the circuit that sinusoidal generation circuit IC2 is used and technology and text Circuit and the technology for offering patent publication No. CN103326667A are consistent.

Claims (1)

1. a kind of have the mobile phone circuit of reply of uttering long and high-pitched sounds, including sinusoidal generation circuit IC2, voicefrequency circuit IC1, receiver MIC and Send button, it is characterised in that：The P9 ends of voicefrequency circuit IC1 and one end of capacitance C1, one end of capacitance C3, capacitance C4 one End, receiver MIC 4 ends be connected, the other end of capacitance C1 is connected and connects with the other end of the other end of capacitance C3, capacitance C4 Ground, 1 end of receiver MIC are connected with one end of analog switch IC3, the other end of analog switch IC3 and the one of analog switch IC5 End, voltage-stabiliser tube D_ZCathode, one end of capacitance C6, one end of capacitance C5, capacitance C2 one end be connected, the other end of capacitance C2 with The T9 ends of voicefrequency circuit IC1 are connected, voltage-stabiliser tube D_ZAnode be connected and connect with the other end of the other end of capacitance C6, capacitance C5 Ground, the U of the other end of analog switch IC5 and sinusoidal generation circuit IC2_outEnd is connected, the resistance R7 in sinusoidal generation circuit IC2 One end and the control terminal of analog switch IC5, one end of resistance R1, the input terminal of NAND gate circuit IC4, send button one end It is connected, the output terminal of NAND gate circuit IC4 is connected with the control terminal of analog switch IC3, and the other end ground connection of resistance R1, transmission is pressed The other end of button is connected with one end of resistance R2, one end of resistance R3, the other end of resistance R2 ground connection, the other end of resistance R3 with Power supply+V_ccIt is connected.