CN103035443A - Relay contact on-off control circuit with phase regulatory function - Google Patents
Relay contact on-off control circuit with phase regulatory function Download PDFInfo
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- CN103035443A CN103035443A CN 201210508774 CN201210508774A CN103035443A CN 103035443 A CN103035443 A CN 103035443A CN 201210508774 CN201210508774 CN 201210508774 CN 201210508774 A CN201210508774 A CN 201210508774A CN 103035443 A CN103035443 A CN 103035443A
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Abstract
The invention discloses a relay contact on-off control circuit with a phase regulatory function. The relay contact on-off control circuit with the phase regulatory function comprises a relay, a relay coil, a power supply phase detection circuit, a microprocessor and an adjustable delay circuit provided with preset delay time. The relay is provided with two contacts connected between an alternating current power supply and a load in a series mode, and the power supply phase detection circuit is used for detecting a power supply zero-cross point of the alternating current power supply. When the microprocessor receives a opening signal or a closing signal, a driving signal is produced or stopped producing at the power supply zero-cross point of the alternating current power supply to the adjustable delay circuit, after delay time is preset, the adjustable delay circuit produces or stops producing a coil control signal, excitation or loss of excitation of the relay can be achieved, and therefore closing or opening of the contacts of the relay is controlled. The relay contact on-off control circuit with the phase regulatory function enables a user to control the contacts of the relay to close or open at any predetermined phase.
Description
Technical field
The present invention relates to a kind of relay tip and open and close control circuit, particularly open and close control circuit about a kind of relay tip with phase adjusting function.But this relay tip opens and closes contact closed or unlatching at any predetermined phase of control circuit control relay.
Background technology
Relay generally is applied in electrical home appliances and the various electrical apparatus control equipment.The main member of relay includes coil, mechanical contacts and casing of relay, via the control of relay, can be used for driving the purposes such as electric power, isolated signal.
Although in most electric equipment now, can use the thyristor (for example SCR, TRIAC) of contactless to replace the function of relay.But in some occasion, still using traditional relay as main, and since relay have low contact resistance, cost low, control easy advantage, so the use of relay is still very general.
Yet, the mechanical contacts of relay closed circuit, when opening, if without suitable phase control, then between two contacts, have moment contact sparking generation, and the generation of spark not only can produce the interference of signal, also can shorten useful life of relay, especially also may produce high danger in the chemical plant.
Summary of the invention
In view of the problems referred to above that prior art exists, technical problem to be solved by this invention is to provide a kind of relay tip with phase adjusting function to open and close control circuit, and purpose is to solve the problems referred to above that prior art exists.
To achieve these goals, a kind of relay tip with phase adjusting function provided by the invention opens and closes control circuit, comprising:
One relay has two contacts between the AC power of being connected in series in and the load;
One relay coil is in order to the closed of the contact of controlling described relay or open;
One power phase circuit for detecting in order to the power supply zero-crossing point in each cycle of detecting AC power, and is respectively sent a power supply zero-crossing signal when each power supply zero-crossing point;
One microprocessor has a switching signal input, and drives signal output part and a power supply zero-crossing signal input, and wherein said power supply zero-crossing signal input is connected in described power phase circuit for detecting, in order to receive described power supply zero-crossing signal;
One can modulate delay circuit, is connected between the driving signal output part and described relay coil of described microprocessor, and the described delay circuit of modulating has default time of delay and a coil control signal output;
After the switching signal input of described microprocessor receives an enabling signal or shutdown signal, produce or stop to produce one when the power supply zero-crossing point of described AC power by the driving signal output part of described microprocessor and drive signal to the described delay circuit of modulating, after described default time of delay of modulating delay circuit, produce or stop to produce a coil control signal by the described coil control signal output of modulating delay circuit and make the excitatory or loss of excitation of described relay coil, and then control junction closure or the unlatching of described relay.
As preferably, described power phase circuit for detecting is a supply voltage detecting phase circuit, and described power supply zero-crossing signal is a supply voltage zero-crossing signal.
As preferably, described microprocessor has a modulation signal output, in order to send the extremely described delay circuit of modulating of a modulation signal to adjust described default time of delay of modulating delay circuit, so that the closed or unlatching in a predetermined phase of the contact of described relay.
As preferably, described relay coil has coil time of delay, described relay coil in receive the coil control signal that the described output of modulating delay circuit produces and be subjected to excitatory after, just make the junction closure of described relay time of delay through described coil, and when the described output of modulating delay circuit stops to produce this coil control signal and after making described relay coil loss of excitation, passes through the contact unlatching of described coil described relay after time of delay.
As preferably, also include one drive circuit, described drive circuit is connected between the described coil control signal output and described relay coil of modulating delay circuit, with so that described relay coil is subject to excitatory.
As preferably, the enabling signal that the switching signal input of described microprocessor receives or shutdown signal are logic control signal.
Be compared to prior art, open and close control circuit via the relay tip with phase adjusting function of the present invention, can make contact closed or unlatching at any predetermined phase of user's control relay.
Description of drawings
Fig. 1 is the control circuit figure that the relay tip with phase adjusting function of the present invention opens and closes the embodiment one of control circuit;
Fig. 2 is that embodiments of the invention one get the coherent signal oscillogram when the junction closure of control relay or unlatching;
Fig. 3 is that the excitatory characteristic of the relay among Fig. 2 produces the coherent signal oscillogram when changing;
After Fig. 4 is the excitatory characteristic changing of relay of embodiments of the invention one, closure or open-interval coherent signal oscillogram that the closure of relay tip or opening time are regulated back the relay tip among Fig. 2;
Fig. 5 is the control circuit figure of embodiments of the invention two;
Fig. 6 be among Fig. 5 the embodiment of the invention two at the junction closure of control relay or the coherent signal oscillogram when opening;
Fig. 7 is that the excitatory characteristic of Fig. 5 repeat circuit produces the coherent signal oscillogram when changing;
After Fig. 8 is the excitatory characteristic changing of relay of the embodiment of the invention two, closure or open-interval coherent signal oscillogram that the closure of relay tip or opening time are regulated back the relay tip among Fig. 6.
Embodiment
Below in conjunction with accompanying drawing structure of the present invention is further described in detail:
Embodiment one
As depicted in figs. 1 and 2, relay tip with phase adjusting function of the present invention opens and closes control circuit 100, be supplied to the phase place of a load 1 in order to control an AC power ACV, or be supplied to the phase place of a load 1 in order to stop an AC power ACV, include a relay 2, a relay coil 3, a power phase circuit for detecting 4, a microprocessor 5, a mnemon 6, one and can modulate delay circuit 7, one drive circuit 8 and a switch element 9.Relay 2 has two contact 2a, 2b, and is connected in series between AC power ACV and the load 1, and relay coil 3 is in order to the closed or unlatching of contact 2a, the 2b of control relay 2.Load 1 is connected in output T1, the T2 of AC power ACV, when relay coil 3 is subjected to excitatory and when making contact 2a, the 2b of relay 2 closed, the voltage V1 of AC power ACV can become output voltage V 2 and be supplied to load 1 at its output T1, T2.And relay coil 3 has coil t2 time of delay, t4, when relay coil 3 be subjected to excitatory after or or loss of excitation after, process coil t2 time of delay or t4 just make the closed or unlatching of contact 2a, the 2b of relay 2, and coil t2 time of delay, t4 are variant according to the difference of relay coil 3 element materials.
Power phase circuit for detecting 4 is connected in parallel in the two ends of AC power ACV, in order to the power supply zero-crossing point in each cycle of detecting AC power ACV, and respectively sends a power supply zero-crossing signal S1 to microprocessor 5 when each power supply zero-crossing point.In the present embodiment, power phase circuit for detecting 4 is supply voltage detecting phase circuit, include a voltage detection circuit 41 and a supply voltage zero-crossing testing circuit 42, in order to the mains voltage zero crossover point in each cycle of detecting AC power ACV, and power supply zero-crossing signal S1 is the supply voltage zero-crossing signal.Those skilled in the art can learn easily, power phase circuit for detecting 4 also can be source current detecting phase circuit, and source current detecting phase circuit includes a source current testing circuit and a source current zero-crossing testing circuit, and this moment, power supply zero-crossing signal S1 then was the source current zero-crossing signal.
Microprocessor 5 has a switching signal input 51, and drives signal output part 52, a power supply zero-crossing signal input 53 and a modulation signal output 54, wherein zero-crossing signal input 53 is connected in power phase circuit for detecting 4, the power supply zero-crossing signal S1 that sends in order to receive power phase circuit for detecting 4.Mnemon 6 is connected in microprocessor 5, uses for microprocessor 5 in order to store microprocessor 5 required data.Can modulate between the driving signal output part 52 and relay coil 3 that delay circuit 7 is connected in microprocessor 5, can modulate delay circuit 7 cordings have one default time of delay t1, one default time of delay a t3 and coil control signal output 71, and between the coil control signal output 71 that can modulate delay circuit 7 and relay coil 3, being connected with drive circuit 8, drive circuit 8 usefulness are so that relay coil 3 is subject to excitatory.And the modulation signal output 54 of microprocessor 5 is in order to sending a modulation signal S5 to can modulating delay circuit 7, adjusting default time of delay of t1, the t3 that can modulate delay circuit 7, so that contact 2a, the 2b of relay 2 are closed or open in a predetermined phase.
Switch element 9 is connected in the switching signal input 51 of microprocessor 5, but user's push switch unit 9 and send an enabling signal (On) or a shutdown signal (Off) to microprocessor 5, wherein enabling signal (On) and shutdown signal (Off) are logic control signal.
After the switching signal input 51 of microprocessor 5 receives the enabling signal (On) that switch element 9 sends, the driving signal output part 52 of microprocessor 5 can produce one and drive signal S2 to modulating delay circuit 7 when the power supply zero-crossing point V0 of AC power ACV, drive the default time of delay of signal S2 through modulating delay circuit 7 behind the t 1, the coil control signal output 71 that can modulate delay circuit 7 can produce a coil control signal S3 to drive circuit 8 so that relay coil 3 is excitatory, relay coil 3 be subjected to excitatory after through coil t2 time of delay, the contact 2a of relay 2,2b is just closed (such as the S4 of Fig. 2, the proper position of the voltage V1 of AC power ACV is at the power supply zero-crossing point in next cycle or in a tolerance scope at this moment), so that the voltage V1 of AC power ACV is supplied to the two ends of load 1, as output voltage V 2.Wherein power supply zero-crossing point V0 is the mains voltage zero crossover point of AC power ACV.
After the switching signal input 51 of microprocessor 5 receives the shutdown signal (Off) that switch element 9 sends, the driving signal output part 52 of microprocessor 5 can stop to produce driving signal S2 to modulating delay circuit 7 when the power supply zero-crossing point of AC power ACV, behind default time of delay t3 that can modulate delay circuit 7, the coil control signal output 71 that can modulate delay circuit 7 stops to produce coil control signal S3 to drive circuit 8 so that relay coil 3 losss of excitation, then pass through coil t4 time of delay, the contact 2a of relay 2,2b just opens (the proper position of the voltage V1 of AC power ACV is at the power supply zero-crossing point in next cycle or in a tolerance scope at this moment), is supplied to the output voltage V 2 at the two ends of load 1 with the voltage V1 that stops AC power ACV.
Desirable, coil t2 time of delay, the t4 of relay coil 3 levels off to zero, perhaps in the ideal situation, coil t2 time of delay, t4 immobilize, still, and when relay coil 3 is using day long afterwards, its magnetic force has the situation of degenerating or changing, as shown in Figure 3.
In Fig. 3, after the switching signal input 51 of microprocessor 5 receives the enabling signal (On) that switch element 9 sends, the driving signal output part 52 of microprocessor 5 can produce equally one and drive signal S2 to modulating delay circuit 7 when the power supply zero-crossing point V0 of AC power ACV, drive the default time of delay of signal S2 through modulating delay circuit 7 behind the t1, the coil control signal output 71 that can modulate delay circuit 7 can produce a coil control signal S3 equally to drive circuit 8 so that relay coil 3 is excitatory, but relay coil 3 be subjected to excitatory after through originally coil t2 time of delay, the contact 2a of relay 2,2b is also not closed, it is again through just closed after one section transition time Δ t, this moment, the voltage V1 of AC power ACV was not in the mains voltage zero crossover point, so it can produce spark when closed.
Similarly, after the switching signal input 51 of microprocessor 5 receives the shutdown signal (Off) that switch element 9 sends, the driving signal output part 52 of microprocessor 5 can stop to produce driving signal S2 equally to modulating delay circuit 7 when the power supply zero-crossing point of AC power ACV, through the default time of delay that can modulate delay circuit 7 behind the t3, the coil control signal output 71 that can modulate delay circuit 7 stops equally producing coil control signal S3 to drive circuit 8 so that relay coil 3 losss of excitation, but behind coil t4 time of delay originally, the contact 2a of relay 2,2b does not open, it is again through just opening after one section transition time Δ t, this moment, the voltage V1 of AC power ACV was not in the mains voltage zero crossover point, so it can produce spark when opening.
When if relay coil 3 has the situation of above-mentioned magnetic force degeneration or change, the modulation signal output 54 of microprocessor 5 can be sent modulation signal S5 to modulating delay circuit 7 to adjust default time of delay of the t1 can modulate delay circuit 7, t3, so that the contact 2a of relay 2,2b is just closed or open during at the mains voltage zero crossover point in the voltage V1 position of AC power ACV, so, can be so that the contact 2a of relay 2,2b is when each time closure or unlatching, can both be at the voltage V1 of AC power ACV in mains voltage zero crossover point place, to reduce the contact 2a of relay 2, the spark that 2b produces when closed or unlatching, as shown in Figure 4.
In Fig. 4, microprocessor 5 can have been modulated default time of delay of the t1 of delay circuit 7, t3 is adjusted into t1 ', t3 ', wherein t1 ' equals original t1 and deducts transition time Δ t, t3 ' equals original t3 and deducts transition time Δ t, so, after the switching signal input 51 of microprocessor 5 receives the enabling signal (On) that switch element 9 sends, the driving signal output part 52 same driving signal S2 that produce when the power supply zero-crossing point V0 of AC power ACV of microprocessor 5 are to modulating delay circuit 7, drive signal S2 through behind the adjusted default time of delay t1 ', the coil control signal output 71 that can modulate delay circuit 7 can produce a coil control signal S3 to drive circuit 8 so that relay coil 3 is excitatory, relay coil 3 be subjected to excitatory after through coil t2 time of delay and transition time Δ t, the contact 2a of relay 2,2b is closed (the proper position of the voltage V1 of AC power ACV is at the power supply zero-crossing point in next cycle or in a tolerance scope at this moment).Similarly, after the switching signal input 51 of microprocessor 5 receives the shutdown signal (Off) that switch element 9 sends, the driving signal output part 52 of microprocessor 5 stops to produce driving signal S2 equally to modulating delay circuit 7 when the power supply zero-crossing point of AC power ACV, through behind the adjusted default time of delay t3 ', the coil control signal output 71 that can modulate delay circuit 7 stops to produce coil control signal S3 to drive circuit 8 so that relay coil 3 losss of excitation, then pass through coil t4 time of delay and transition time Δ t, the contact 2a of relay 2,2b just opens (the proper position of the voltage V1 of AC power ACV is at the power supply zero-crossing point in next cycle or in a tolerance scope at this moment).
The rest may be inferred, if the magnetic force of relay coil 3 has been strengthened, so that shorten coil time of delay (deducting one section transition time Δ t by original coil t2 time of delay, t4), then microprocessor 5 can be sent modulation signal S5 to prolong the default time of delay that can modulate delay circuit 7 (t1, t3 add transition time Δ t by original default time of delay) via its modulation signal output 54.
Because among the present invention, the modulation signal output 54 of microprocessor 5 can be sent modulation signal S5 to modulating delay circuit 7, adjusting default time of delay of t1, the t3 can modulate delay circuit 7, but so that contact 2a, the 2b of control relay 2 are closed or open (not necessarily just position at power supply zero-crossing point) in any predetermined phase.
Embodiment two
As shown in Figure 5 and Figure 6, the embodiment of the invention two is roughly the same with the control circuit of embodiment one, so identical member marks with same label.Difference is, dispose one in the microprocessor 5 of 100a among the embodiment two and can modulate delay cell 7a, and microprocessor 5 has a coil control signal output 55.And be connected in parallel in AC power ACV two ends for supply voltage zero-crossing testing circuit 42, in order to the mains voltage zero crossover point in each cycle of detecting AC power ACV, and when each mains voltage zero crossover point, respectively send a supply voltage zero-crossing signal S1 to microprocessor 5.
After the switching signal input 51 of microprocessor 5 receives the enabling signal (On) that switch element 9 sends, microprocessor 5 can be according to default time of delay of the t1 that can modulate delay cell 7a, and produce a coil control signal S3 when the Preset Time point of AC power ACV by the coil control signal output 55 of microprocessor 5, to drive circuit 8 so that relay coil 3 is excitatory, relay coil 3 be subjected to excitatory after through coil t2 time of delay, the contact 2a of relay 2,2b is closed (referring to the S4 among Fig. 6, the proper position of the voltage V1 of AC power ACV is at the mains voltage zero crossover point in next cycle or in a tolerance scope at this moment).
After the switching signal input 51 of microprocessor 5 receives the shutdown signal (Off) that switch element 9 sends, microprocessor 5 can be according to default time of delay of the t3 that can modulate delay cell 7a, and by the coil control signal output 55 of microprocessor 5 when another Preset Time point of AC power ACV, stop to produce coil control signal S3, to drive circuit 8 so that relay coil 3 losss of excitation, then pass through coil t4 time of delay, the contact 2a of relay 2,2b just opens (the proper position of the voltage V1 of AC power ACV is at the mains voltage zero crossover point in next cycle or in a tolerance scope at this moment).
As shown in Figure 7, after the switching signal input 51 of microprocessor 5 receives the enabling signal (On) that switch element 9 sends, microprocessor 5 equally can be according to default time of delay of the t1 that can modulate delay cell 7a, and produce coil control signal S3 when the Preset Time point of AC power ACV by the coil control signal output 55 of microprocessor 5, to drive circuit 8 so that relay coil 3 is excitatory, but relay coil 3 be subjected to excitatory after through originally coil t2 time of delay, the contact 2a of relay 2,2b is also not closed, it is again through just closed after one section transition time Δ t, this moment, the voltage V1 of AC power ACV was not in the mains voltage zero crossover point, so it can produce spark when closed.
Similarly, after the switching signal input 51 of microprocessor 5 receives the shutdown signal (Off) that switch element 9 sends, microprocessor 5 equally can be according to default time of delay of the t3 that can modulate delay cell 7a, and by the coil control signal output 55 of microprocessor 5 when another Preset Time point of AC power ACV, stop to produce coil control signal S3, to drive circuit 8 so that relay coil 3 losss of excitation, but behind coil t4 time of delay originally, the contact 2a of relay 2,2b does not open, it is again through just opening after one section transition time Δ t, this moment, the voltage V1 of AC power ACV was not in the mains voltage zero crossover point, so it can produce spark when opening.
When if relay coil 3 has the situation of above-mentioned magnetic force degeneration or change, microprocessor 5 can be set default time of delay of t1, the t3 that adjustment can be modulated delay cell 7a, so that contact 2a, the 2b of relay 2 are just closed when the voltage V1 of AC power ACV is in the mains voltage zero crossover point or unlatching, so, can so that contact 2a, the 2b of relay 2 closed or when opening each time, can both be positioned at the voltage V1 of AC power ACV mains voltage zero crossover point place, with the contact 2a, the 2b that reduce relay 2 at spark closed or that produced when opening, as shown in Figure 8.In the 8th figure, microprocessor 5 can have been modulated default time of delay of the t1 of delay cell 7a, t3 is adjusted into t1 ', t3 ', wherein t1 ' equals original t1 and deducts transition time Δ t, t3 ' equals original t3 and deducts transition time Δ t, so, after the switching signal input 51 of microprocessor 5 receives the enabling signal (On) that switch element 9 sends, microprocessor 5 can be according to default time of delay of the t1 ' that can modulate delay cell 7a, and produce coil control signal S3 ' to drive circuit 8 so that relay coil 3 is excitatory by the coil control signal output 55 of microprocessor 5 when the Preset Time point of AC power ACV, relay coil 3 be subjected to excitatory after through coil t2 time of delay and transition time Δ t, the contact 2a of relay 2,2b just closed (this moment AC power ACV voltage V1 just be in the power supply zero-crossing point in next cycle or in a tolerance scope).Similarly, after the switching signal input 51 of microprocessor 5 receives the shutdown signal (Off) that switch element 9 sent, microprocessor 5 can be according to default time of delay of the t3 ' that can modulate delay cell 7a, and by the coil control signal output 55 of microprocessor 5 when another Preset Time point of AC power ACV, stop to produce coil control signal S3 ' to drive circuit 8 so that relay coil 3 losss of excitation, then pass through coil t4 time of delay and transition time Δ t, the contact 2a of relay 2,2b just open (this moment AC power ACV voltage V1 just be in the power supply zero-crossing point in next cycle or in a tolerance scope).
Claims (10)
1. the relay tip that has phase adjusting function opens and closes control circuit, comprising:
One relay has two contacts between the AC power of being connected in series in and the load;
One relay coil is in order to the closed of the contact of controlling described relay or open;
One power phase circuit for detecting in order to the power supply zero-crossing point in each cycle of detecting AC power, and is respectively sent a power supply zero-crossing signal when each power supply zero-crossing point;
One microprocessor has a switching signal input, and drives signal output part and a power supply zero-crossing signal input, and wherein said power supply zero-crossing signal input is connected in described power phase circuit for detecting, in order to receive described power supply zero-crossing signal;
One can modulate delay circuit, is connected between the driving signal output part and described relay coil of described microprocessor, and the described delay circuit of modulating has default time of delay and a coil control signal output;
After the switching signal input of described microprocessor receives an enabling signal or shutdown signal, produce or stop to produce one when the power supply zero-crossing point of described AC power by the driving signal output part of described microprocessor and drive signal to the described delay circuit of modulating, after described default time of delay of modulating delay circuit, produce or stop to produce a coil control signal by the described coil control signal output of modulating delay circuit and make the excitatory or loss of excitation of described relay coil, and then control junction closure or the unlatching of described relay.
2. as claimed in claim 1 have the phase adjusting function relay tip and open and close control circuit, it is characterized in that described power phase circuit for detecting is a supply voltage detecting phase circuit, and described power supply zero-crossing signal is a supply voltage zero-crossing signal.
3. the relay tip with phase adjusting function as claimed in claim 1 opens and closes control circuit, it is characterized in that, described microprocessor has a modulation signal output, in order to send the extremely described delay circuit of modulating of a modulation signal to adjust described default time of delay of modulating delay circuit, so that the closed or unlatching in a predetermined phase of the contact of described relay.
4. the relay tip with phase adjusting function as claimed in claim 1 opens and closes control circuit, it is characterized in that, described relay coil has coil time of delay, described relay coil in receive the coil control signal that the described output of modulating delay circuit produces and be subjected to excitatory after, just make the junction closure of described relay time of delay through described coil, and when the described output of modulating delay circuit stops to produce this coil control signal and after making described relay coil loss of excitation, passes through the contact unlatching of described coil described relay after time of delay.
5. the relay tip with phase adjusting function as claimed in claim 1 opens and closes control circuit, it is characterized in that, also include one drive circuit, described drive circuit is connected between the described coil control signal output and described relay coil of modulating delay circuit, with so that described relay coil is subject to excitatory.
6. the relay tip with phase adjusting function as claimed in claim 1 opens and closes control circuit, it is characterized in that the enabling signal that the switching signal input of described microprocessor receives or shutdown signal are logic control signal.
7. the relay tip that has phase adjusting function opens and closes control circuit, comprising:
One relay has two contacts between the AC power of being connected in series in and the load;
One relay coil is in order to the closed of the contact of controlling described relay or open;
One power phase circuit for detecting in order to the power supply zero-crossing point in each cycle of detecting described AC power, and is respectively sent a power supply zero-crossing signal when each power supply zero-crossing point;
One microprocessor has a switching signal input, a coil control signal output and a power supply zero-crossing signal input, and wherein said power supply zero-crossing signal input is connected in this power phase circuit for detecting, in order to receive described power supply zero-crossing signal;
One can modulate delay cell, is disposed in the described microprocessor, and the described delay cell of modulating has a default time of delay;
After the switching signal input of described microprocessor receives an enabling signal or shutdown signal, by described microprocessor according to described default time of delay of modulating delay cell, make the excitatory or loss of excitation of described relay coil and produce or stop to produce a coil control signal when the Preset Time point of described AC power by the coil control signal output of described microprocessor, and then control junction closure or the unlatching of described relay.
8. the relay tip with phase adjusting function as claimed in claim 7 opens and closes control circuit, it is characterized in that described power phase circuit for detecting is a supply voltage detecting phase circuit, and described power supply zero-crossing signal is a supply voltage zero-crossing signal.
9. the relay tip with phase adjusting function as claimed in claim 7 opens and closes control circuit, it is characterized in that, described microprocessor can be set described default time of delay of modulating the delay range formula, so that the closed or unlatching in a predetermined phase of the contact of described relay.
10. the relay tip with phase adjusting function as claimed in claim 7 opens and closes control circuit, it is characterized in that, described relay coil has coil time of delay, described relay coil coil control signal that the coil control signal output that receives this microprocessor produces and be subjected to excitatory after, just make the junction closure of this relay time of delay through described coil, and when the coil control signal output of described microprocessor stops to produce described coil control signal and after making described relay coil loss of excitation, passes through the contact unlatching of described coil described relay after time of delay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210508774 CN103035443A (en) | 2012-12-04 | 2012-12-04 | Relay contact on-off control circuit with phase regulatory function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210508774 CN103035443A (en) | 2012-12-04 | 2012-12-04 | Relay contact on-off control circuit with phase regulatory function |
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| CN103035443A true CN103035443A (en) | 2013-04-10 |
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| CN 201210508774 Pending CN103035443A (en) | 2012-12-04 | 2012-12-04 | Relay contact on-off control circuit with phase regulatory function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327214A (en) * | 2017-08-01 | 2019-02-12 | 深圳光峰科技股份有限公司 | A kind of power on-off control circuit and projector |
| CN109787601A (en) * | 2019-01-19 | 2019-05-21 | 深圳市沃特沃德股份有限公司 | Control method, device, computer equipment and the storage medium of relay switch |
| US10983149B2 (en) | 2019-09-06 | 2021-04-20 | Chicony Power Technology Co., Ltd. | Inrush current test device |
-
2012
- 2012-12-04 CN CN 201210508774 patent/CN103035443A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327214A (en) * | 2017-08-01 | 2019-02-12 | 深圳光峰科技股份有限公司 | A kind of power on-off control circuit and projector |
| CN109327214B (en) * | 2017-08-01 | 2021-06-08 | 深圳光峰科技股份有限公司 | Power switch control circuit and projector |
| CN109787601A (en) * | 2019-01-19 | 2019-05-21 | 深圳市沃特沃德股份有限公司 | Control method, device, computer equipment and the storage medium of relay switch |
| CN109787601B (en) * | 2019-01-19 | 2023-08-29 | 深圳市沃特沃德信息有限公司 | Relay switch control method and device, computer equipment and storage medium |
| US10983149B2 (en) | 2019-09-06 | 2021-04-20 | Chicony Power Technology Co., Ltd. | Inrush current test device |
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Application publication date: 20130410 |