CN2798491Y - Controlling circuit for colour lamp - Google Patents
Controlling circuit for colour lamp Download PDFInfo
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- CN2798491Y CN2798491Y CN 200420120190 CN200420120190U CN2798491Y CN 2798491 Y CN2798491 Y CN 2798491Y CN 200420120190 CN200420120190 CN 200420120190 CN 200420120190 U CN200420120190 U CN 200420120190U CN 2798491 Y CN2798491 Y CN 2798491Y
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- flip flop
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Abstract
The utility model relates to a control circuit, particularly a control circuit for color lamps, which can reduce electromagnetic interference. In the utility model, a D trigger (1) is connected between a driving circuit and a thyristor component of a traditional control circuit for color lamps. The D end of the D trigger (1) is connected with the driving circuit, and inputs control signals for color lamps. The clock end of the D trigger (1) inputs power synchronous signals, and the power synchronous signals are rectified by an RC filtering circuit (5), a Schmitt trigger (4) and a phase inverter (3) before entering the clock end of the D trigger (1). The Q end of the D trigger (1) is connected with the thyristor component, and outputs thyristor control signals. By the use of the utility model, the voltage of an electric network can be prevented from generating subsidence and high harmonic wave when the color lamps are switched on; electromagnetic interference is prevented from generating on other electric equipment and communication systems when the color lamps are switched on. Thereby, the control circuit for color lamps meets national electromagnetic standard.
Description
Technical field the utility model relates to a kind of control circuit, a kind of color light control circuit that reduces electromagnetic interference of saying so more specifically.
Background technology is present, and the consideration of electromagnetic compatibility aspect has become domestic electronic product 3C and authenticated a very important aspect, and in this case, domestic many main flow electronic products have all run into suchlike difficulty when countries such as outlet America and Europe.For example, mainly be used in the color lamp that Christmas tree etc. plays decoration function, it is global more than 90% that the present annual production of China accounts for, and has very large market occupancy volume.But present color light control circuit is more remarkable to the electromagnetic interference of electrical network and the generation of other electrical equipment, and this mainly is the control silicon controlled signal that the color light control circuit is sent, and also is that the signal of control color lamp switch is asynchronous with the power supply AC signal caused.Existing color lamp circuit is after control circuit sends Continuity signal, no matter which kind of state power supply signal is in, controllable silicon is conducting immediately.Open constantly, voltage vanishing immediately on the controllable silicon, and corresponding power voltage differs and is decided to be zero, so, often make line voltage occur subsiding in the moment of controllable silicon conducting, produce high order harmonic component, these harmonic components will cause the line voltage distortion, power factor descends, and other power consumption equipment and communication system are produced extremely bad influence.
Utility model content the purpose of this utility model provides a kind of color light control circuit, it compared with prior art, the silicon controlled firing point can be controlled at behind the alternating voltage zero-crossing near, thereby reduced the harmonic components that produces in opening, solved preferably owing to the controllable silicon uncertain electromagnetic interference problem that brings of service time.
In order to achieve the above object, be connected a d type flip flop between the drive circuit of the utility model in traditional color light control circuit and the silicon-controlled device, the D end of d type flip flop is connected with drive circuit, input color light control signal, the power synchronization signal that the clock end end input of d type flip flop is drawn from the color lamp power supply, the Q end of d type flip flop is connected with silicon-controlled device, output SCR control signal.
In order to guarantee the d type flip flop operate as normal, the utility model can also carry out step-down to it in the clock end that power synchronization signal enters d type flip flop, makes its voltage magnitude within the working range of d type flip flop.
For better synchro source signal and color light control signal, can also before entering d type flip flop, power synchronization signal put in order ripple to it.
After using the utility model, can produce following beneficial effect:
1. the moment of avoiding color lamp to connect makes line voltage occur subsiding, and produces high order harmonic component;
2. the moment of avoiding color lamp to connect produces extremely bad electromagnetic interference to other power consumption equipment and communication system.
3. make the color light control circuit meet domestic electromagnetism standard.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
Description of drawings
Fig. 1 is the fundamental diagram of existing color light control circuit;
Fig. 2 is a circuit structure diagram of the present utility model, and the CLK end among the figure is clock end.
Fig. 3 is a simplification circuit structure diagram of the present utility model.
Embodiment
Below with reference to accompanying drawings, be described in detail specific embodiments of the present utility model.
Among Fig. 1, have three input signal: clock signal C P, beat selection signal S and reset signal K in traditional color light control circuit, clock signal C P is input to beat generator by the outside, beat selects signal S to be input to controller earlier, select control signal Y to beat generator by controller output again, control the conversion of speed beat at any time.The cadence signal CLK that beat generator produces outputs to controller, coding circuit and drive circuit respectively.The coding circuit output feedback signal is given controller, and each submodule alternation of controller output signal control coding circuit produces the type that do not suit, and by drive circuit signal is outputed to silicon-controlled device again, and the control color lamp flickers.K is a reset signal, is input to controller by the outside, and during K=0, wait state is got back to by system, and color lamp goes out entirely; During K=1, system works.After but control circuit sent Continuity signal, no matter which kind of state power supply signal is in, controllable silicon is conducting immediately.Open constantly, voltage vanishing immediately on the controllable silicon, and corresponding power voltage differs and is decided to be zero, so, often make line voltage occur subsiding in the moment of controllable silicon conducting, produce high order harmonic component, these harmonic components will cause the line voltage distortion, power factor descends, and other power consumption equipment and communication system are produced extremely bad influence.
Fig. 2 is a circuit structure diagram of the present utility model.The utility model comprises controller, coding circuit, beat generator, drive circuit, the output of controller is connected with coding circuit with beat generator respectively, beat generator is connected with coding circuit, beat generator is connected with drive circuit respectively with coding circuit, drive circuit is connected with the D end of d type flip flop 1, the clock end input power synchronization signal of d type flip flop 1, the Q end of d type flip flop 1 is connected with silicon-controlled device.
Power synchronization signal is before the clock end that enters d type flip flop 1, earlier by a RC filter circuit 5, the input input power synchronization signal of RC filter circuit 5, the output of RC filter circuit 5 is connected with the input of Schmidt trigger 4, the earth terminal ground connection of RC filter circuit 5, the output of Schmidt trigger 4 is connected with the input of inverter 3, and the output of inverter 3 is connected with the clock end of d type flip flop 1.Thus, power synchronization signal is being handled through Schmidt trigger 4 and inverter 3, become square-wave signal, clock control signal as d type flip flop 1, the D end input color light control signal of d type flip flop 1, after d type flip flop 1 was with two signal Synchronization, the output of the Q of d type flip flop 1 end was exactly the SCR control signal of zero cross fired.So just the silicon controlled firing point is controlled at behind the alternating voltage zero-crossing near, thereby reduced the harmonic components that produces in opening, solved preferably owing to the controllable silicon uncertain electromagnetic interference problem that brings of service time.
Fig. 3 is a simplification circuit structure diagram of the present utility model.In order to control cost, the utility model can also fall the RC filter circuit 5 among Fig. 2, Schmidt trigger 4 and inverter 3 all or part of simplification.
Fig. 3 A is the clock end that power synchronization signal is directly inputted to d type flip flop 1.
Fig. 3 B showed before power synchronization signal is input to 1 clock end of d type flip flop, can use resistance 6 that it is carried out step-down, made its voltage magnitude within the working range of d type flip flop 1.
Fig. 3 C, Fig. 3 C and Fig. 3 E showed before power synchronization signal is input to 1 clock end of d type flip flop, can use RC filter circuit 5, Schmidt trigger 4, inverter 3 that it is put in order ripple respectively, and will mix to dial filters.
Fig. 3 F showed before power synchronization signal is input to 1 clock end of d type flip flop, can use Schmidt 4 and inverter 3 that it is put in order ripple simultaneously, and will mix to dial filters.
Fig. 3 G showed before power synchronization signal is input to 1 clock end of d type flip flop, can use resistance 6 that it is carried out step-down earlier, used Schmidt 4 and inverter 3 that it is put in order ripple then, and will mix to dial filters.
In addition, the electronic device that signal is carried out step-down, whole ripple has many, because the specification length is limit, can't enumerate one by one, but those skilled in the art can find the alternative device of same function very easily, therefore, step-down described in the utility model or whole wave device are not limited to the above-mentioned various devices of mentioning.
Claims (10)
1. color light control circuit, comprise controller, coding circuit, beat generator, drive circuit, the output of controller is connected with coding circuit with beat generator respectively, beat generator is connected with coding circuit, beat generator is connected with drive circuit respectively with coding circuit, drive circuit is connected with silicon-controlled device, it is characterized in that: between drive circuit and silicon-controlled device, be connected a d type flip flop (1), the D end of d type flip flop (1) is connected with the output of drive circuit, the power synchronization signal that the input of the clock end of d type flip flop (1) is drawn from the color lamp power supply, the Q end of d type flip flop (1) are connected with silicon-controlled device and export the SCR control signal.
2. a kind of color light control circuit according to claim 1 is characterized in that: power synchronization signal can drop to its voltage magnitude within the working range of d type flip flop (1) earlier to its step-down before the clock end that enters d type flip flop (1).
3. a kind of color light control circuit according to claim 2, it is characterized in that: power synchronization signal is before the clock end that enters d type flip flop (1), by a resistance (6), an end of resistance (6) is imported power synchronization signal earlier, and the other end is connected with the clock end of d type flip flop (1).
4. a kind of color light control circuit according to claim 1 is characterized in that: power synchronization signal can also be put in order ripple to its waveform, so that clutter is filtered before the clock end that enters d type flip flop (1).
5. a kind of color light control circuit according to claim 4 is characterized in that: can use in RC filter circuit (5), Schmidt trigger (4) and the inverter (3) any one, any two or use above-mentioned three devices that power synchronization signal is put in order ripple simultaneously.
6. a kind of color light control circuit according to claim 5, it is characterized in that: power synchronization signal is before the clock end that enters d type flip flop (1), can be earlier to its step-down, then its waveform is put in order ripple, so that the amplitude of power synchronization signal is in d type flip flop (1) working range, and clutter filtered.
7. a kind of color light control circuit according to claim 5, it is characterized in that: power synchronization signal is before the clock end that enters d type flip flop (1), earlier by a RC filter circuit (5), the input input power synchronization signal of RC filter circuit (5), the output of RC filter circuit (5) is connected with the input of Schmidt trigger (4), the output of Schmidt trigger (4) is connected with the clock end of d type flip flop (1), the output of drive circuit is connected with the D end of d type flip flop (1), and the Q end of d type flip flop (1) is connected with silicon-controlled device.
8. a kind of color light control circuit according to claim 5, it is characterized in that: power synchronization signal is before the clock end that enters d type flip flop (1), earlier by a RC filter circuit (5), the input input power synchronization signal of RC filter circuit (5), the output of RC filter circuit (5) is connected with the input of inverter (3), the output of inverter (3) is connected with the clock end of d type flip flop (1), the output of drive circuit is connected with the D end of d type flip flop (1), and the Q end of d type flip flop (1) is connected with silicon-controlled device.
9. a kind of color light control circuit according to claim 5, it is characterized in that: power synchronization signal is before the clock end that enters d type flip flop (1), be introduced into the input of Schmidt trigger (4), the output of Schmidt trigger (4) is connected with the input of inverter (5), the output of inverter (5) is connected with the clock end of d type flip flop (1), the output of drive circuit is connected with the D end of d type flip flop (1), and the Q end of d type flip flop (1) is connected with silicon-controlled device.
10. a kind of color light control circuit according to claim 5, it is characterized in that: power synchronization signal is before the clock end that enters d type flip flop (1), earlier by a RC filter circuit (5), the input input power synchronization signal of RC filter circuit (5), the output of RC filter circuit (5) is connected with the input of Schmidt trigger (4), the output of Schmidt trigger (4) is connected with the input of inverter (3), the output of inverter (3) is connected with the clock end of d type flip flop (1), the output of drive circuit is connected with the D end of d type flip flop (1), and the Q end of d type flip flop (1) is connected with silicon-controlled device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420120190 CN2798491Y (en) | 2004-12-27 | 2004-12-27 | Controlling circuit for colour lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420120190 CN2798491Y (en) | 2004-12-27 | 2004-12-27 | Controlling circuit for colour lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2798491Y true CN2798491Y (en) | 2006-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420120190 Expired - Fee Related CN2798491Y (en) | 2004-12-27 | 2004-12-27 | Controlling circuit for colour lamp |
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| CN (1) | CN2798491Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877484A (en) * | 2010-04-06 | 2010-11-03 | 瑞声声学科技(深圳)有限公司 | Filter circuit |
| CN102520624A (en) * | 2011-12-09 | 2012-06-27 | 中国科学院长春光学精密机械与物理研究所 | Programmed instruction receiving circuit suitable for on-board load |
| CN104375550A (en) * | 2014-11-12 | 2015-02-25 | 苏州大学 | Circuit structure for improving interference resistance of input port |
| CN105706531A (en) * | 2013-11-20 | 2016-06-22 | 欧司朗有限公司 | Controlling a lamp having at least two semiconductor light sources |
-
2004
- 2004-12-27 CN CN 200420120190 patent/CN2798491Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877484A (en) * | 2010-04-06 | 2010-11-03 | 瑞声声学科技(深圳)有限公司 | Filter circuit |
| CN102520624A (en) * | 2011-12-09 | 2012-06-27 | 中国科学院长春光学精密机械与物理研究所 | Programmed instruction receiving circuit suitable for on-board load |
| CN105706531A (en) * | 2013-11-20 | 2016-06-22 | 欧司朗有限公司 | Controlling a lamp having at least two semiconductor light sources |
| CN104375550A (en) * | 2014-11-12 | 2015-02-25 | 苏州大学 | Circuit structure for improving interference resistance of input port |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |