CN204242952U - A kind of time relay - Google Patents
A kind of time relay Download PDFInfo
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- CN204242952U CN204242952U CN201420827428.9U CN201420827428U CN204242952U CN 204242952 U CN204242952 U CN 204242952U CN 201420827428 U CN201420827428 U CN 201420827428U CN 204242952 U CN204242952 U CN 204242952U
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Abstract
The utility model provides a kind of time relay, comprises the rectification circuit external ac power source inputted from input being converted to DC power supply; Produce the timer circuit of time delayed signal; Relay circuit, comprises relay K 1 and relay K 2, and relay K 1 power positive end connects the output head anode of rectification circuit, and power-extremely connects the output of timer circuit; Relay K 2 power positive end connects the output head anode of rectification circuit; Three end selector switch S2, its first end connects the output of timer circuit, and it is extreme that the second end connects relay K 2 power-, 3rd end ground connection, when three end selector switch S2 are placed in primary importance, its first end is communicated with the second end, when being placed in the second place, its second end is communicated with the 3rd end.The time relay solving prior art thus can not meet after being powered up, one part contact deferred action or return, and the technical problem that the instantaneous operation practical application of another part contact needs.
Description
Technical field
The utility model relates to relay technical field, relates in particular to a kind of time relay.
Background technology
Along with the development of science and technology; electronic product is more and more universal and more and more intelligent; but, often can run in the process of the use of electronic product because battery is taken off or the situation of unexpected shutdown by unexpected, often preserve owing to not having enough time and lose the data processed.In order to avoid the generation of this situation, computer user is connected by uninterrupted power supply (UPS) with computer or arranges power storage cell in computer-internal and connects computer motherboard, thus when unexpected power-off, by the supply of electric power of pre-stored to computer, buffer-stored backup is when the time of pre-processing data.But, for the smart electronics product that emphasis is at present frivolous, connect a uninterrupted power supply (Uninterruptible PowerSystem/Uninterruptible Power Supply, monitoring UPS) or power storage cell be set in inside obviously improper.In addition, also by setting up electric capacity in circuit to realize the object of accumulation of energy, but the electric energy that an electric capacity or several electric capacity are saved often cannot provide time enough to preserve by the mainboard backup of electronic product the data processed, when using more electric capacity, not only increasing volume and not meeting cost benefit.In prior art, in order to realize delay cut-off, usually adopt mechanical type time delay or the power cut off delay time relay etc.
The time relay refers to after adding the actuating signal that (or removing) input, and its output circuit need just produce through the correct time of regulation a kind of relay that great-jump-forward changes (or contact action).Be on a kind of circuit being used in lower voltage or small electric stream, be used for switching on or off the electric component of circuit of high voltage, larger current.Meanwhile, the time relay is also a kind of control apparatus utilizing electromagnetic principle or theory of mechanics to realize delays time to control.
But the time relay of prior art only provides the mode of operation of on-delay, after instant relay switches on power, its contact deferred action or return.But, in actual applications, often require relay after being powered up, one part contact deferred action or return, and another part contact only needs instantaneous operation.The time relay of prior art can not meet these needs.
Utility model content
For this reason, technical problem to be solved in the utility model is that the time relay of prior art can not meet after being powered up, one part contact deferred action or return, and the practical application of another part contact instantaneous operation needs.
For solving the problems of the technologies described above, the technical solution adopted in the utility model comprises:
A kind of time relay, comprising: the rectification circuit external ac power source inputted from input being converted to DC power supply, its output exports described DC power supply; Produce the timer circuit of time delayed signal, its power end connects the output of described rectification circuit, and its output exports described time delayed signal; Relay circuit, comprises relay K 1 and relay K 2, and relay K 1 power positive end connects the output head anode of described rectification circuit, and power-extremely connects the output of described timer circuit; Relay K 2 power positive end connects the output head anode of described rectification circuit; Three end selector switch S2, its first end connects the output of described timer circuit, and it is extreme that the second end connects relay K 2 power-, 3rd end ground connection, when three end selector switch S2 are placed in primary importance, its first end is communicated with the second end, when being placed in the second place, its second end is communicated with the 3rd end.
Thus, when three end selector switch S2 are placed in primary importance, if after external ac power source connected by described rectification circuit, it is low level signal that described timer circuit exports time delayed signal, relay K 1, relay K 2 energized action, if it is high level signal that described timer circuit exports time delayed signal, relay K 1, relay K 2 dead electricity return, thus after meeting and switching on power, contact deferred action or the requirement of application scenarios returned; When three end selector switch S2 are placed in the second place, after external ac power source connected by described rectification circuit, relay K 2 instantaneous operation, the time delayed signal action that relay K 1 exports according to described timer circuit or return, thus meet switch on power after the contact deferred action or return, the application request of another part contact instantaneous operation of a relay part.
As the further improvement of the technical solution of the utility model, described relay circuit also comprises: resistance R7, and its one end connects the output head anode of described rectification circuit; Light-emitting diode HL1, the other end of its positive terminal contact resistance R7, negative pole end connects the output of described timer circuit.
Thus, during relay K 1 action, light-emitting diode HL1 lights, and then the operating state of indicating relay K1, visual good.
As the further improvement of the technical solution of the utility model, described relay circuit also comprises voltage-stabiliser tube D8, and the 3rd end of three end selector switch S2 is by voltage-stabiliser tube D8 ground connection.
Thus, when three end selector switch S2 are placed in the second place, can avoid relay K 2 after external ac power source connected by rectification circuit 100 during instantaneous operation, instantaneous voltage, to the impact of relay K 2 coil, improves the Reliability of Microprocessor of relay K 2.
As the further improvement of the technical solution of the utility model, described relay circuit also comprises diode D7, and the power-that its positive terminal connects relay K 1 is extreme, and negative pole end connects the power positive end of relay K 1.
Like this, because relay K 1 is when dead electricity, coil two ends produce larger induced voltage, by diode D7 afterflow effect, the coil of relay K 1 can be prevented damaged.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the structural representation of a kind of time relay of the utility model embodiment 1;
Fig. 2 is the structural representation of a kind of time relay of the utility model embodiment 2.
Embodiment
Embodiment 1
Fig. 1 shows a kind of time relay of the utility model embodiment, comprises rectification circuit 100, timer circuit 200 and relay circuit 300.
Rectification circuit 100 is for being converted to DC power supply by the external ac power source inputted from input, and this DC power supply is exported by its output.
Timer circuit 200 is for generation of time delayed signal, and described time delayed signal is exported by its output, and its power end connects the output of rectification circuit 100.
Relay circuit 300 comprises relay K 1, relay K 2, three end selector switch S2.The power positive end of relay K 1 connects the output head anode of rectification circuit 100, and power-extremely connects the output of timer circuit 200.The power positive end of relay K 2 connects the output head anode of rectification circuit 100.The first end 1 of three end selector switch S2 connects the output of timer circuit 200, and it is extreme that the second end 2 connects relay K 2 power-, the 3rd end 3 ground connection.When three end selector switch S2 are placed in primary importance, its first end 1 is communicated with the second end 2; When being placed in the second place, its second end 2 is communicated with the 3rd end 3.
When three end selector switch S2 are placed in primary importance, if it is low level signal that timer circuit 200 exports time delayed signal, relay K 1, relay K 2 energized action; If it is high level signal that timer circuit 200 exports time delayed signal, relay K 1, relay K 2 dead electricity return.The on-delay mode of operation of this time relay being this enforcement, namely after external ac power source connected by rectification circuit 100, the time delayed signal action that relay K 1, relay K 2 export according to timer circuit 200 or return, thus after meeting and switching on power, contact deferred action or the requirement of application scenarios returned.
When three end selector switch S2 are placed in the second place, after external ac power source connected by rectification circuit 100, relay K 2 instantaneous operation, the time delayed signal action that relay K 1 exports according to timer circuit 200 or return.The on-delay band momentary mode operation of this time relay being this enforcement, thus after meeting and switching on power, the contact deferred action or return, the application requirement of another part contact instantaneous operation of a relay part.
Embodiment 2
Below in conjunction with specific embodiment, the time relay in embodiment 1 is described in further detail.
Going out as shown in Figure 2, for implementing a kind of time relay of the present embodiment, comprising rectification circuit 100, timer circuit 200 and relay circuit 300.
Rectification circuit 100 is for being converted to DC power supply by the external ac power source inputted from input, and this DC power supply is exported by its output.Rectification circuit 100 comprises: transformer T1, and its input connects external ac power source end; One end of diode D1, its positive terminal connection transformer T1 output; The other end of diode D2, its positive terminal connection transformer T1 output, negative pole end connects the negative pole end of diode D1; Diode D3, the positive terminal of its negative pole end diode D1; Diode D4, the positive terminal of its negative pole end diode D2, positive terminal connects the positive terminal of diode D3; Electrochemical capacitor C1, its positive terminal connects the negative pole end of diode D2, and negative pole end connects the positive terminal of diode D4; Electric capacity C2, in parallel with electrochemical capacitor C1; Resistance R1, its one end connects one end of electric capacity C2; Voltage-stabiliser tube D5, the other end of its negative pole end contact resistance R1, provides the positive pole of described DC power supply, and positive terminal connects the other end of electric capacity C2, provides the negative pole of described DC power supply.
Timer circuit 200 is for generation of time delayed signal, and described time delayed signal is exported by its output, and its power end connects the output of rectification circuit 100.Timer circuit 200 comprises: resistance R2, and its one end connects the output head anode of described rectification circuit; Switch S 1, the other end of its one end contact resistance R2; Diode D6, the other end of its positive pole connecting valve S1; Electrochemical capacitor C3, its positive terminal connects the negative pole end of diode D6, and negative pole end connects the negative pole of output end of described rectification circuit; Resistance R3, in parallel with diode D6; Resistance R4, its one end connects the positive terminal of diode D6; Electric capacity C4, the other end of its one end contact resistance R4, the other end connects the negative pole of output end of described rectification circuit; Resistance R5, it is in parallel with electric capacity C4; 555 timers, its power positive end, negative pole end connect the output positive and negative electrode of described rectification circuit respectively, the described other end of low triggering end, high-triggering end difference contact resistance R4, control voltage end connects the negative pole of output end of described rectification circuit by resistance R6, and output provides described time delayed signal.
Relay circuit 300 comprises relay K 1, relay K 2, three end selector switch S2.The power positive end of relay K 1 connects the output head anode of rectification circuit 100, and power-extremely connects the output of timer circuit 200.The power positive end of relay K 2 connects the output head anode of rectification circuit 100.The first end 1 of three end selector switch S2 connects the output of timer circuit 200, and it is extreme that the second end 2 connects relay K 2 power-, the 3rd end 3 ground connection.When three end selector switch S2 are placed in primary importance, its first end 1 is communicated with the second end 2; When being placed in the second place, its second end 2 is communicated with the 3rd end 3.
When three end selector switch S2 are placed in primary importance, civil power is through the DC power supply of rectification circuit 100 to follow-up circuit with stable, and when switch S 1 is not pressed, relay K 1, relay K 2 do not work.If press switch S 1, because resistance R2, diode D6 resistance are very little, then electrochemical capacitor C3 is charged rapidly, electric capacity C4 is also charged simultaneously, when electric capacity C4 reaches 2/3Vcc (Vcc is the DC power supply of 555 timer IC1), 555 timer IC1 set, output 3 output low level, relay K 1, relay K 2 conducting are in running order.Decontrol switch S 1, electrochemical capacitor C3, electric capacity C4 are by resistance R5, resistance R4, resistance R3 discharge lag; Although electrochemical capacitor C3, electric capacity C4 charging interval are identical, because diode D6 forward resistance is far smaller than the resistance of resistance R4, so the charging voltage of electrochemical capacitor C3 is far longer than the charging voltage of electric capacity C4, realize pressure reduction charging.And resistance R3, resistance R5 all adopt large resistance, and then effectively can reach the object of long delay, when on electric capacity C4, voltage is down to 1/3Vcc, 555 timer IC1 outputs 3 export high level, and relay K 1, K2 turn off, and depart from operating state.The on-delay mode of operation of this time relay being this enforcement, namely after external ac power source connected by rectification circuit 100, the time delayed signal action that relay K 1, relay K 2 export according to timer circuit 200 or return, thus after meeting and switching on power, contact deferred action or the requirement of application scenarios returned.
Similarly, when three end selector switch S2 are placed in the second place, after external ac power source connected by rectification circuit 100, relay K 1 is according to the time delayed signal action of 555 timer IC1 outputs 3 or return; And relay K 2 instantaneous operation after external ac power source connected by rectification circuit 100.The on-delay band momentary mode operation of this time relay being this enforcement, thus after meeting and switching on power, the contact deferred action or return, the requirement of the application scenarios of another part contact instantaneous operation of a relay part.
As preferred embodiment, relay circuit 300 also comprises: resistance R7, and its one end connects the output head anode of described rectification circuit; Light-emitting diode HL1, the other end of its positive terminal contact resistance R7, negative pole end connects the output of described timer circuit.
Thus, during relay K 1 action, light-emitting diode HL1 lights, and then the operating state of indicating relay K1, visual good.
As further preferred embodiment, relay circuit 300 also comprises voltage-stabiliser tube D8, and the 3rd end of three end selector switch S2 is by voltage-stabiliser tube D8 ground connection.
Thus, when three end selector switch S2 are placed in the second place, can avoid relay K 2 after external ac power source connected by rectification circuit 100 during instantaneous operation, instantaneous voltage, to the impact of relay K 2 coil, improves the Reliability of Microprocessor of relay K 2.
As further preferred embodiment, relay circuit 30 also comprises diode D7, and the power-that its positive terminal connects relay K 1 is extreme, and negative pole end connects the power positive end of relay K 1.
Like this, because relay K 1 is when dead electricity, coil two ends produce larger induced voltage, by diode D7 afterflow effect, the coil of relay K 1 can be prevented damaged.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range that the utility model creates.
Claims (6)
1. a time relay, is characterized in that, comprising:
The external ac power source inputted from input is converted to the rectification circuit of DC power supply, its output exports described DC power supply;
Produce the timer circuit of time delayed signal, its power end connects the output of described rectification circuit, and its output exports described time delayed signal;
Relay circuit, comprises relay K 1 and relay K 2, and relay K 1 power positive end connects the output head anode of described rectification circuit, and power-extremely connects the output of described timer circuit; Relay K 2 power positive end connects the output head anode of described rectification circuit;
Three end selector switch S2, its first end connects the output of described timer circuit, and it is extreme that the second end connects relay K 2 power-, 3rd end ground connection, when three end selector switch S2 are placed in primary importance, its first end is communicated with the second end, when being placed in the second place, its second end is communicated with the 3rd end.
2. a kind of time relay according to claim 1, is characterized in that, described relay circuit also comprises:
Resistance R7, its one end connects the output head anode of described rectification circuit;
Light-emitting diode HL1, the other end of its positive terminal contact resistance R7, negative pole end connects the output of described timer circuit.
3. a kind of time relay according to claim 1, is characterized in that: described relay circuit also comprises voltage-stabiliser tube D8, and the 3rd end of three end selector switch S2 is by voltage-stabiliser tube D8 ground connection.
4. a kind of time relay according to claim 1, is characterized in that: described relay circuit also comprises diode D7, and the power-that its positive terminal connects relay K 1 is extreme, and negative pole end connects the power positive end of relay K 1.
5. a kind of time relay according to any one of claim 1-4, is characterized in that, described rectification circuit comprises:
Transformer T1, its input connects external ac power source end;
One end of diode D1, its positive terminal connection transformer T1 output;
The other end of diode D2, its positive terminal connection transformer T1 output, negative pole end connects the negative pole end of diode D1;
Diode D3, the positive terminal of its negative pole end diode D1;
Diode D4, the positive terminal of its negative pole end diode D2, positive terminal connects the positive terminal of diode D3;
Electrochemical capacitor C1, its positive terminal connects the negative pole end of diode D2, and negative pole end connects the positive terminal of diode D4;
Electric capacity C2, in parallel with electrochemical capacitor C1;
Resistance R1, its one end connects one end of electric capacity C2;
Voltage-stabiliser tube D5, the other end of its negative pole end contact resistance R1, provides the positive pole of described DC power supply, and positive terminal connects the other end of electric capacity C2, provides the negative pole of described DC power supply.
6. a kind of time relay according to any one of claim 1-4, is characterized in that, described timer circuit comprises:
Resistance R2, its one end connects the output head anode of described rectification circuit;
Switch S 1, the other end of its one end contact resistance R2;
Diode D6, the other end of its positive pole connecting valve S1;
Electrochemical capacitor C3, its positive terminal connects the negative pole end of diode D6, and negative pole end connects the negative pole of output end of described rectification circuit;
Resistance R3, in parallel with diode D6;
Resistance R4, its one end connects the positive terminal of diode D6;
Electric capacity C4, the other end of its one end contact resistance R4, the other end connects the negative pole of output end of described rectification circuit;
Resistance R5, it is in parallel with electric capacity C4;
555 timers, its power positive end, negative pole end connect the output positive and negative electrode of described rectification circuit respectively, the described other end of low triggering end, high-triggering end difference contact resistance R4, control voltage end connects the negative pole of output end of described rectification circuit by resistance R6, and output provides described time delayed signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420827428.9U CN204242952U (en) | 2014-12-23 | 2014-12-23 | A kind of time relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420827428.9U CN204242952U (en) | 2014-12-23 | 2014-12-23 | A kind of time relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204242952U true CN204242952U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420827428.9U Expired - Fee Related CN204242952U (en) | 2014-12-23 | 2014-12-23 | A kind of time relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204242952U (en) |
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2014
- 2014-12-23 CN CN201420827428.9U patent/CN204242952U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151223 |
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| EXPY | Termination of patent right or utility model |