CN2096173U - Automatic talking audio amplifier telephone - Google Patents

Abstract

The utility model relates to an automatic talking audio amplifier telephone, belonging to the field of telephonic communication. The utility model avoids the problem that in the case of people sharing a telephone when a telephone bell rings, the situation of repeating answer happens because of unable to predicting who callers want to speak to. The automatic talking audio amplifier telephone is composed of a telephone, a bell sensing circuit, a fork spring analog circuit and a sound indicating circuit; the automatic talking audio amplifier telephone adopts an automatic switching on conversation circuit to send out the indicating sound to users automatically, and the indicating sound and the sound of callers can be broadcast by a loudspeaker simultaneously for the convenience of people sharing one telephone; if the telephone is not picked up for a period of set time, the conversation circuit is cut down automatically so as to realize on hook.

Description

Automatic talking audio amplifier telephone

A kind of automatic conversation public address phone is the utility model that belongs to the telephonic communication field.

During the shared phone of many people, behind the ring, require and whose conversation owing to can't predict the calling party, often duplicate the situation of answering, realization of the present utility model can be avoided this situation that repeats to answer.

Accompanying drawing 1 is the schematic diagram (referring to " telephone exchange principle ", Anhui Province posts ﹠ telecommunications school compiles) of homemade HD665-III type telephone set.L wherein ₁, L ₂Connecting telephone exchange, is example with JZB-1A type dial exchange, and the DC power supply voltage that it provides is 60 volts, and ringing-current is 33～43V, and frequency is the interchange of 25HZ.During the calling of switchboard called subscriber, electric bell DL rings, if called subscriber's off-hook at this moment, hook switch H ₁H ₂Closure has been finished the dc loop circuit of switch to the called subscriber, and ringing-current stops, L ₁, L ₂Between voltage reduce to 6～10 volts by 60 volts, can converse.

Accompanying drawing 2 is theory diagrams of the present utility model.The utility model is by telephone set D, ringing-current perception circuit 1., hook switch action simulation circuit 2., timing circuit 1 3., timing circuit 2 4., prompting sound generation amplifying circuit 5., loud speaker Y etc. partly form.When the phone receiver is placed on the support, hook switch H ₁H ₂Be in off-state, if switch sends ringing-current to the user, electric bell DL rings, 1. ringing-current perception circuit receives ringing signal simultaneously, send signal enabling timing circuit 1 3., 3. timing circuit 1 sends signal at setting-up time makes hook switch action simulation circuit 2. produce action, the hook switch H of analog telephone D ₁H ₂Action finish the dc loop circuit of switch to the called subscriber, ringing-current is stopped.Simultaneously timing circuit 1 3. also send signal enabling prompting sound generation amplifying circuit 5. with timing circuit 2 4..5. prompting sound generation amplifying circuit adopts language IC(such as T6668) or sound equipment IC formation, after receiving the signal that 3. timing circuit 1 send, this circuit promptly sends " you are good; whom you look for? " send into circuit Deng voice signal or other acoustic signal as prompting sound and reach calling party telephone, prompting calling subscriber dialogue, simultaneously loud speaker Y being delivered in prompting sound and calling subscriber's speech plays back, so that require the people who converses to answer by the calling subscriber, if unmanned after a while off-hook, then send voice signals such as " sorry; that the people does not exist " or other acoustic signal and notify the other side on-hook, then timing circuit 2 4. send signal to hook switch action simulation circuit 2., cut off the dc loop circuit of switch, realize on-hook to the called subscriber.If someone off-hook, the hook switch H of telephone set D ₁H ₂2. closure is promptly cut off, 3., 4., 5. circuit and loud speaker Y, above circuit is no longer had an effect.

Can avoid the trouble that repeats to answer when advantage of the present utility model is the shared telephone set of many people, and reduce the required time of conversation, alleviate the busy of telephone network.

Description of reference numerals:

L ₁, L ₂Telephone wire joint Terminal DL magneto bell SH receiver

S transmitter H ₁H ₂Hook switch D ₁D ₂Dial contact

R ₁～R ₂₁Resistance L inductance C ₁～C ₁₁Electric capacity

The D telephone set is 2. hook switch action simulation circuit of ringing-current perception circuit 1.

3. 4. 5. prompting sound generation amplifying circuit of timing circuit 2 of timing circuit 1

Y loud speaker J ₁～J ₆Relay BG ₁～BG ₅Triode

IC ₁, IC ₂Base IC IC during TLC555C ₃CIC285 music IC

Accompanying drawing 3 is that the applicant is to a kind of implementation of the present utility model.

J ₁And C ₂Constitute ringing-current perception circuit.J ₂Adopt the very little relay of coil working electric current, like this J ₂Because line current is very little, can not make the switch action during connection, ringing-current does not stop.J ₃And R ₄Constitute hook switch action simulation circuit.Timing circuit 1 and timing circuit 2 adopt two 555 o'clock base IC to constitute.C1C285 music IC and BG ₅Constitute prompting sound generation amplifying circuit.This circuit preferably adopts language IC(such as T6668) because applicant's condition restriction adopts music IC to substitute here.During someone off-hook, H ₁H ₂Closure, J ₆Contact action, the function of promptly excising above circuit.

Claims (1)

1. Claim 1, a kind of automatic conversation public address phone, by telephone set D, ringing-current perception circuit 1., hook switch action simulation circuit 2., timing circuit 1 3., timing circuit 2 4., prompting sound generation amplifying circuit 5., loud speaker Y constitutes.L1, L2 connects telephone exchange, and contact J3 and resistance R 4 constitute hook switch action simulation circuit.After it is characterized in that said contact J3 closure, said prompting sound generation amplifying circuit and loud speaker are connected in L1, L2 simultaneously.

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