CN2167492Y - Remote control device for colour TV sets for turning off power supply when switched out - Google Patents

Abstract

The utility model relates to a remote control device for a colour TV for turning off a power supply when switched off, comprising a housing, a power circuit, a status testing circuit, a delay circuit, an on-off discriminating circuit, an overvoltage testing circuit and a main circuit. In the power circuit, the serially connected regulated power supply of a transformer is used; in the on-off discriminating circuit, three inverter are used; the power switch of a TV can be replaced with the on-off discriminating circuit; the controller is provided with an extending socket. Compared with the prior art, the utility model has the advantages of electricity saving, reliability, multifunction, a wide range of application, etc.

Description

Remote control device for colour TV sets for turning off power supply when switched out

The utility model relates to a kind of remote control colour TV set shutdown circuit breaking controller, is applicable to remote control colour TV set, stereo set and video tape recorder, game machine, the antenna amplifier antennafire etc. of all size model and the electrical equipment of remote control colour TV set associated.

Remote control colour TV set is behind remote-control closedown, because power supply does not cut off, the remote control receiving unit still is in charged operating state, power consumption on the one hand, quickens the receiving unit component ageing on the other hand.For this reason, the user must the hand off TV set power switch when no longer watching, remote-control closedown loses meaning.Remote control colour TV set shutdown auto-power-off device by power circuit, input, comparison circuit, delay circuit, main circuit are formed has solved pass tester in power-down state problem.But existing remote control colour TV set shutdown auto-power-off device adopts the resistance-capacitance depressurization power circuit more, does not have overvoltage protection, and load (remote control colour TV set) is had certain requirement, exist power consumption greatly, deficiencies such as reliable, function singleness, restricted application inadequately.

The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, provides a kind of power saving, reliable, diverse in function, the scope of application wide, the remote control colour TV set that can substitute the mains switch on the television set fully circuit breaking controller that shuts down.

The purpose of this utility model is achieved through the following technical solutions: the load current when utilizing the remote control colour TV set operate as normal with off-mode is different, carries out state-detection, switching on and shutting down differentiation, and the control remote control colour TV set closes tester in power-down state.Constitute remote control colour TV set shutdown circuit breaking controller by shell, power circuit, state detection circuit, delay circuit, switching on and shutting down judging circuit, main circuit.Its power circuit is by transformer B and is connected to the diode D that B pays the limit ₁, D ₂, capacitor C ₁, voltage-stabiliser tube DW, triode BG ₁, resistance R ₁, R ₂, LED ₁The series connection stabilized voltage power supply of forming; State detection circuit is by the diode connected in parallel D that is connected to the former limit of B ₃, D ₄, resistance R ₁₄And triode BG ₃, diode D ₁₀, resistance R ₅, R ₁₀, R ₁₁, R ₁₅, capacitor C ₅, inverter U _1:E, LED ₂Form; Delay circuit is by capacitor C ₂, resistance R ₄And inverter U _1:DForm; The switching on and shutting down judging circuit is by inverter U _1:A, U _1:B, U _1:C, resistance R ₆, R ₇, R ₈, R ₉, R ₁₂, capacitor C ₃, C ₄, diode D ₆, D ₇, D ₈, D ₉Form; Main circuit is by resistance R ₃, triode BG ₂, relay J, button switch K form; Load (remote control colour TV set) socket TU one is terminated at the former limit of B, the other end and BG ₁Emitter, D ₃, D ₄, R ₁₄Link to each other.

Description of drawings:

Fig. 1 is the utility model embodiment circuit theory diagrams.

Fig. 2 is the utility model embodiment shell front elevational schematic.

Fig. 3 is the utility model embodiment shell schematic rear view.

With reference to the accompanying drawings, in conjunction with the embodiments the utility model is described in further detail: a kind of remote control colour TV set shutdown circuit breaking controller has shell, power circuit, state detection circuit, delay circuit, switching on and shutting down judging circuit, over-voltage detection circuit, main circuit to constitute.Its power circuit is by transformer B and is connected to the diode D that B pays the limit ₁, D ₂, capacitor C ₁, voltage-stabiliser tube DW, triode BG ₁, resistance R ₁, R ₂, LED ₁The series connection stabilized voltage power supply of forming; State detection circuit is by the diode connected in parallel D that is connected to the former limit of B ₃, D ₄, sample resistance R ₁₄And triode BG ₃, diode D ₁₀, resistance R ₅, R ₁₀, R ₁₁, R ₁₅, capacitor C ₅, inverter U _1:E, LED ₂Form; Delay circuit is by capacitor C ₂, resistance R ₄And inverter U _1:DForm; The switching on and shutting down judging circuit is by inverter U _1:A, U _1:B, U _1:C, resistance R ₆, R ₇, R ₈, R ₉, R ₁₂, capacitor C ₃, C ₄, diode D ₆, D ₇, D ₈, D ₉Form; Inverter U _1:AInput connecting resistance R ₁₂, capacitor C ₄, button switch K normally-closed contact N, output connecting resistance R ₉, the series connection R ₆, D ₆Inverter U _1:BInput termination capacitor C ₃, resistance R ₈, diode D ₅, output terminating diode D ₉, resistance R ₇, R ₁₃Inverter U _1:CInput connecting resistance R ₉, diode D ₉, output connecting resistance R ₈, diode D ₈Over-voltage detection circuit is by potentiometer W, inverter U _1:F, diode D ₅, resistance R ₁₃Form; Main circuit is by resistance R ₃, triode BG ₂, relay J, button switch K form.Load (remote control colour TV set) socket TU one is terminated at former limit, the other end and the BG of B ₁Emitter, D ₃, D ₄, R ₁₄Link to each other.Also there is extension socket UID on the former limit of transformer B.Inverter in state detection circuit, delay circuit, switching on and shutting down judging circuit, the over-voltage detection circuit adopts a slice CMOS hex inverter.Power line inlet S, button switch K, start indicator light LED, status indicator lamp LED are housed on the shell ₂, load socket TU, extension socket UID.

During use, earlier this controller power source plug is inserted commercial power socket, more main load (remote control colour TV set, stereo set etc.) attaching plug is inserted load socket TU, open the load power source switch simultaneously.Click K during start, S is communicated with e, N and e disconnect, and D is passed through on the former limit of transformer B ₃, D ₄, R ₁₄Parallel circuits add the 220V civil power, pay limit D through B ₁D ₂Rectification, C ₁After the filtering by DW voltage stabilizing, R ₁, BG ₁Export a burning voltage, LED ₁Bright.Because C during start ₂Voltage can not suddenly change, so U _1:EInput be high potential, be output as electronegative potential, through R ₃Current limliting, BG ₂Conducting, the relay J coil gets electric, and the normally opened contact adhesive guarantees that the former limit of B gets.Simultaneously, the work of switching on and shutting down judging circuit, U _1:AInput high level, output low level is through R ₉Make U _1:CInput low level, output high level are through D ₈Clamp A point makes its high level, through R ₈Make U _1:BInput high level, output low level, D ₉End D ₆Conducting is because C ₂There is not the approach of discharge rapidly, U ₁: the E state is constant.When K unclamps, recover N and e and connect U _1:AInput low level, output high level, D ₆End, through R ₉Make U _1:CInput high level, output low level, D ₈End, but through R ₈Make U _1:BInput low level, output high level are through R ₇Make the A point still keep high level, D ₉Conducting, clamp U ₁: C is input as high level, guarantees D ₈End, make U _1:EState is constant, BG ₂Conducting, the former limit of J adhesive B gets electric, and load socket TU and extension socket UID have 220V output, load operate as normal.Click K during shutdown, the work of switching on and shutting down judging circuit, U _1:ABe input as high level, be output as low level, D ₆Conducting is because D ₉Clamp and R ₉Step-down makes U _1:CInput still keeps high level, output low level, D ₈End C ₂Through D ₇, D ₆, R ₆Charging makes U _1:EInput voltage descends, during to threshold values, and U _1:ECounter-rotating is output as high level, BG ₂End, the J coil losing electricity, normally opened contact discharges, and after K unclamped, TU, UID promptly cut off the power supply.The C of switching on and shutting down judging circuit among Fig. 1 ₃Effect is to make U _1:BInput high level when start, C ₄For eliminating contact chatter, R ₆, R ₇Be current-limiting resistance.

After the remote control colour TV set operate as normal, because R ₁₄Be serially connected in the load circuit, load current is at the sample resistance R of state detection circuit ₁₄On pressure drop make BG ₃Conducting is through BG ₃, C ₅, R ₁₀Filtering makes U behind the removal Alternating Component _1:DBe input as low level, be output as high level, LED ₂Oppositely end U _1:EBe input as high level, delay time and do not work, guarantee the positive often-have-electricity of J coil.When remote control colour TV set standby (shutdown), R flows through ₁₄Electric current reduce, when being lower than BG ₃During conducting voltage, BG ₃End U _1:DBe input as high level, be output as low level, LED ₂Bright, the C of delay circuit ₂Pass through R ₄Slowly charging (time-delay), U _1:EThe input current potential descends gradually, during to threshold voltage, and U _1:ECounter-rotating makes BG ₂End, the J coil blackout reaches the purpose of shutdown, LED ₂Go out.If start shooting again, then can keep normal detected state at the time delay internal burden.R among Fig. 1 in the state detection circuit ₁₅, D ₁₀Be protection component, avoid just in case sampling part is opened a way and cause fault to enlarge; R ₁₁Be feedback resistance, state detection circuit is operated in the bistable state state of certain return difference; D ₃, D ₄Be protection sample resistance R ₁₄.

Over-voltage detection circuit work is: adjust potentiometer W, make U _1:FWhen operate as normal, be in the high level input, JD ₅End.When line voltage rose to set point, W connect the negative power end current potential and reduces U _1:FCounter-rotating, D ₅Conducting, U _1:BThe input electrical level rising, to threshold values, U _1:BCounter-rotating, output low level is passed through R ₁₃Feed back to U _1:FInput, make U _1:BOutput reaches low level, C rapidly ₂Pass through D ₇, R ₇Quick charge makes U _1:EInput terminal voltage descends, during to threshold values, and U _1:ECounter-rotating makes BG ₂End, make the J coil losing electricity, discharge outage, play the overvoltage protection effect.

The utility model compared with prior art because power circuit has adopted transformer, has been used sampling protecting component R in the state detection circuit₁₅、D ₁₀、D ₃、D ₄, designed over-voltage detection circuit, switching on and shutting down judging circuit and extension socket UID; And have the several functions such as little power consumption, reliable, overvoltage protection, at once shutdown, be suitable for all size model remote control colour TV set and with the electrical equipment of three associated, the advantages such as power switch that can complete replacing TV.

Claims (5)

1, a kind of remote control colour TV set shutdown circuit breaking controller, shell, power circuit, input, comparison circuit, delay circuit, main circuit are arranged, it is characterized in that: input, comparison circuit are state detection circuit and switching on and shutting down judging circuit, and its power circuit is by transformer B and is connected to the diode D that B pays the limit ₁, D ₂, capacitor C ₁, voltage-stabiliser tube DW, triode BG ₁, resistance R ₁, R ₂, LED ₁The series connection stabilized voltage power supply of forming, state detection circuit is by the diode connected in parallel D that is connected to the former limit of B ₃, D ₄, resistance R ₁₄And triode BG ₃, diode D ₁₀, resistance R ₅, R ₁₀, R ₁₁, R ₁₅, capacitor C ₅, inverter U _{1: E}, LED ₂Form, delay circuit is by capacitor C ₂, resistance R ₄And inverter U _{1: D}Form, the switching on and shutting down judging circuit is by inverter U _{1: A}, U _{1: B}, U _{1: C}, resistance R ₅, R ₇, R ₈, R ₉, R ₁₂, capacitor C ₃, C ₄, diode D ₆, D ₇, D ₈, D ₉Form, main circuit is by resistance R ₃, triode BG ₂, relay J, button switch K form, load socket TU one is terminated at former limit, the other end and BG emitter, the D of B ₃, D ₄, R ₁₄Link to each other.

2, remote control colour TV set shutdown circuit breaking controller according to claim 1 is characterized in that: over-voltage detection circuit is arranged, by potentiometer W, inverter U behind the power circuit _1:F, diode D ₅, resistance R ₁₃Form.

3, remote control colour TV set shutdown circuit breaking controller according to claim 2 is characterized in that: adopt a slice CMOS hex inverter as the inverter in state detection circuit, delay circuit, switching on and shutting down judging circuit, the over-voltage detection circuit.

4, according to the described remote control colour TV set shutdown of claim 2 circuit breaking controller, it is characterized in that: also there is extension socket UID on the former limit of transformer B.

5, according to the described remote control colour TV set shutdown of claim 4 circuit breaking controller, it is characterized in that: power line inlet S, button switch K, start indicator light LED, status indicator lamp LED are housed on the shell ₂, load socket TU, extension socket UID.

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