CN2328048Y

CN2328048Y - Special time delay socket for audio computer

Info

Publication number: CN2328048Y
Application number: CN 97243832
Authority: CN
Inventors: 周立杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-30
Filing date: 1997-10-30
Publication date: 1999-07-07
Anticipated expiration: 2007-10-30

Abstract

The utility model relates to a special time delay socket for audio computers. The special time delay socket is composed of a socket body and jacks. A time delay control circuit is arranged in the socket body to respectively control each jack. A switch is led out from the socket body by a wire lead. The utility model has the advantages of simple structure of the socket and convenient operation, and is capable of protecting the safety of audio devices. The special time delay socket can avoid surge signals generated by signal sources inputting to a power amplifier and damaging inner original components, and can simultaneously lighten instantaneous overloads on electric networks.

Description

The special-purpose time-delay of sound equipment computing machine socket

The utility model belongs to the electrical connector socket, the special-purpose time-delay of particularly a kind of sound equipment computing machine socket.

Present existing supply socket does not have time-delay mechanism.To present combined household cinema equipment, it generally has three groups or four groups, these televisors, video recorder, video disc player, the VCD machine, the power amplifier stereo set is connected on the socket simultaneously, sometimes for easy to use, directly use the switch in the supply socket, produce electric current and the voltage that exceeds the normal value manyfold at energising moment device interior circuit like this, at this moment can produce surging signal, amplification so to received signal returns to say, on its internal circuit everywhere voltage do not reach normal value yet, if any strong signal (surging signal) input, be easy to inner original paper is damaged or shortens serviceable life, cause unnecessary loss.

The purpose of this utility model provides the special-purpose time-delay of a kind of sound equipment computing machine socket, overcomes the above-mentioned general socket shortcoming and defect of not delaying time.

The purpose of this utility model is achieved in that

The special-purpose time-delay of a kind of sound equipment computing machine socket, by socket, jack is formed, it is characterized in that: delay control circuit is arranged in socket, its control circuit is that city's electrical connection transformer T is elementary, transformer time utmost point output low-voltage AC, connection is by diode D1, D2, D3, the bridge rectifier that D4 forms, the current rectifying and wave filtering circuit that the output-parallel capacitor C 1 of bridge rectifier is formed, back output 12V DC voltage, one the tunnel through the positive 5V voltage of three terminal regulator (7805) output, resistance R 2, R3, R4, the be connected in series positive pole of a termination 5V voltage of R5, another termination negative pole, by R2, R3, R4, the stepped-up voltage that R5 produces, respectively with voltage comparator A1, A2, the negative terminal of A3 links to each other, the anode of voltage comparator also connects together, with K switch 1, R1, C2 forms charge circuit, comparer A1, A2, the A3 output terminal is respectively through current-limiting resistance R7, R8, R9 connects triode VT1, VT2, the VT3 base stage, VT1, VT2, the VT3 emitter connects the negative pole of 5V voltage, VT1, VT2, the VT3 collector connects relay J 1 respectively, J2, J3 coil one end, relay J 1, J2, another termination of J3 coil 12V DC voltage; Relay J 1, J2, J3 normal opened contact are connected on the 200V power supply respectively with after jack P1, P2, P3 connect.

Socket can be for a plurality of, and corresponding circuit increases to a plurality of.

K switch can be drawn from socket by lead-in wire.

The utility model has the advantages that:

This socket is simple, and is easy to use, uses the time-delay socket can protect the safety of stereo set.The surging signal of avoiding signal source to produce inputs to power amplifier, damages inner original paper, alleviates instantaneous overload on the electrical network simultaneously.

Below in conjunction with description of drawings embodiment:

Fig. 1 is the special-purpose time-delay of a sound equipment computing machine socket synoptic diagram

Fig. 2 is the special-purpose time-delay of sound equipment computing machine socket control circuit figure

The special-purpose time-delay of a kind of sound equipment computing machine socket, by socket, jack is formed, delay control circuit is arranged in socket, its control circuit is that city's electrical connection transformer T is elementary, transformer time utmost point output low-voltage AC, connection is by diode D1, D2, D3, the bridge rectifier that D4 forms, the current rectifying and wave filtering circuit that the output-parallel capacitor C 1 of bridge rectifier is formed, back output 12V DC voltage, one the tunnel through the positive 5V voltage of three terminal regulator (7805) output, resistance R 2, R3, R4, the be connected in series positive pole of a termination 5V voltage of R5, another termination negative pole, by R2, R3, R4, the stepped-up voltage that R5 produces, respectively with voltage comparator A1, A2, the negative terminal of A3 links to each other, the anode of voltage comparator also connects together, with K switch 1, R1, C2 forms charge circuit, when the closed after-current of K1 through K1, R1 gives capacitor C 2 chargings, after capacitor C 2 both end voltage surpass comparer A3 negative terminal voltage, A3 exports positive voltage, comparer A3 output terminal connects triode VT3 base stage through current-limiting resistance R9, VT3 utmost point electrode connects relay J 3 coils one end, another termination of relay J 3 coils 12V DC voltage, close conducting when VT3 is full, electric current is through the J3 coil, and VT3 utmost point electrode flows to negative pole, the relay J 3 adhesives connection of often making war makes to be connected the 200V power supply and to be connected in jack P3 energized on relay J 3 normal opened contacts; At this moment charging is continued at capacitor C 2 two ends, and is same, and when the C2 both end voltage surpassed the A2 negative terminal voltage, A2 exported positive voltage, after the R8 current limliting, gives the VT2 base stage, positive voltage VT2 conducting J2 adhesive, and the P2 energized, same, J1 adhesive after delaying time, P1 energized.

After K1 closed, when at the bottom of the voltage during in the A1 negative terminal voltage, A1 is output as zero VT1 to be ended the C2 both end voltage through R6 discharge, and J1 discharges J1 often makes war and disconnect the outage of P1 jack, and the C2 two ends are continued discharge A2 and are output as zero VT2 and end, and J2 discharges, and the P2 jack cuts off the power supply.Through the outage of time-delay P3 jack.

This time-delay socket designs at the combined household cinema equipment, it has the jack of three or four order time-delay energisings, generally connect televisor with a normal open jack, time-delay jack general sequence connection is VCD machine, deck, power amplifier successively, is turning on the power switch the energising earlier of back VCD machine like this, and time-delay is waited for a period of time, after circuit signal is all stablized, connect the deck power supply again, the power amplifier power supply is connected in time-delay at last again.Design avoids the surging signal of signal source generation to input to power amplifier like this, damages inner original paper, alleviates instantaneous overload on the electrical network simultaneously, is to close the power amplifier power supply earlier successively in the process of shutting down, and time-delay is closed the deck power supply again, delayed time and close VCD electromechanics source at last again.

It is exactly the line traffic control switch that this time-delay socket also has a special electricity, and its extracts switch of being contained on the socket, generally all much seems very irregular and all socket is placed on the frame rear that the switch on the socket is very inconvenient in use being inserted in plug on the socket.Can only take away socket out from the machine rear, put back to again after opening switch.Often cause plug loosening easily, loose contact damages machinery and equipment, and socket switch is extracted from socket, links to each other with the black lead.Switch is placed on by the machine, promptly seems attractive in appearance just together, use and very convenient.

This socket also can be applicable on computing machine and its peripherals display, the printer.

Claims

1, the special-purpose time-delay of a kind of sound equipment computing machine socket, by socket, jack is formed, it is characterized in that: delay control circuit is arranged in socket, its control circuit is that city's electrical connection transformer T is elementary, transformer time utmost point output low-voltage AC, connection is by diode D1, D2, D3, the bridge rectifier that D4 forms, the current rectifying and wave filtering circuit that the output-parallel capacitor C 1 of bridge rectifier is formed, back output 12V DC voltage, one the tunnel through the positive 5V voltage of three terminal regulator (7805) output, resistance R 2, R3, R4, the be connected in series positive pole of a termination 5V voltage of R5, another termination negative pole, by R2, R3, R4, the stepped-up voltage that R5 produces, respectively with voltage comparator A1, A2, the negative terminal of A3 links to each other, the anode of voltage comparator also connects together, with K switch 1, R1, C2 forms charge circuit, comparer A1, A2, the A3 output terminal is respectively through current-limiting resistance R7, R8, R9 connects triode VT1, VT2, the VT3 base stage, VT1, VT2, the VT3 emitter connects the negative pole of 5V voltage, VT1, VT2, the VT3 collector connects relay J 1 respectively, J2, J3 coil one end, relay J 1, J2, another termination of J3 coil 12V DC voltage; Relay J 1, J2, J3 normal opened contact are connected on the 200V power supply respectively with after jack P1, P2, P3 connect.

2, the special-purpose time-delay of sound equipment computing machine according to claim 1 socket is characterized in that: socket can be for a plurality of, and corresponding circuit increases to a plurality of.

3, the special-purpose time-delay of sound equipment computing machine according to claim 1 and 2 socket, it is characterized in that: K switch is drawn from socket by lead-in wire.