CN201742312U - Single-voltage switch state converting circuit - Google Patents
Single-voltage switch state converting circuit Download PDFInfo
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- CN201742312U CN201742312U CN2010202360583U CN201020236058U CN201742312U CN 201742312 U CN201742312 U CN 201742312U CN 2010202360583 U CN2010202360583 U CN 2010202360583U CN 201020236058 U CN201020236058 U CN 201020236058U CN 201742312 U CN201742312 U CN 201742312U
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- photoelectrical coupler
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- 239000003990 capacitor Substances 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 6
- 230000011664 signaling Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 230000005693 optoelectronics Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model discloses a single-voltage switch state converting circuit. The input of a single power supply voltage is connected with a bridge rectifier consisting of D1 to D4 by a switch S and a false load capacitor C1; the rectified voltage is filtered by voltage-dividing resistors R1 and R2, is subsequently connected in series with a voltage-stabilizing tube ZD1 and a photoelectric coupler U; the photoelectric coupler load R4 is connected with a low voltage Vcc; and low-level digital signals 0/1 are output by the photoelectric coupler load. The single-voltage switch state converting circuit has the advantages of effectively converting the on/off states of the power supply switch into direct-current low-voltage 0/1 digital control signals, and simultaneously realizing the aim of electric insulation (namely electric insulation between the output terminal and the input terminal) by the photoelectric coupler.
Description
Technical field
The utility model relates to a kind of control signal converting circuit, particularly a kind of Univoltage switch status conversion circuit.
Background technology
Utilize the electric equipment or the utensil of grid ac voltage power supply, the most basic control is to utilize a mains switch directly to control the on-off of power supply.
The supply voltage that electric equipment or utensil adapt to has the branch of what is called " univoltage " and " wide voltage " usually.So-called univoltage is meant that electric equipment or utensil can only adapt to certain fixing line voltage of fluctuation in electric power system prescribed limit (as ± 10%), is 220V as China, and Japan is 100V, and Europe is 240V, and the U.S. is 120V or 277V or the like.The electric equipment or the utensil that adapt to univoltage, when using under the condition beyond the regulation line voltage normal fluctuation range, not only performance is difficult to guarantee the adverse consequences that also can cause damage that has.
As the switch of Switching power break-make, except using the most general armstrong's patent formula switch, also have the automatic control switch that constitutes with semiconductor device (as controllable silicon) or electromagnetic device (as relay contact), for example be used to respond to the optoelectronic switch that human body moves.These switch roles only are electric equipment or the utensil work of making when mains switch is connected, and quit work when power supply disconnects.
When the action that requires this switch makes electric equipment or utensil is not to switch between " work " and " not working ", but when between " normally " and " derate " two states, switching, the on/off two states of switch will be changed, be converted to the signal that the operating state control circuit of electric equipment or utensil can be discerned, the most general is low-voltage direct digital signaling zero/1.One also requires between low-voltage dc circuit and the ac power supply circuit good electric insulation is arranged.
A typical example is, the optoelectronic switch that a kind of induction human body that is made of controllable silicon or relay moves, when in the bias light condition that can set up and the photosensitive region scope that can set up, mobile object occurring, the switch connection lighting apparatus, through after a period of time that can set up, switch disconnects, and closes lighting apparatus.What will do now is when above-mentioned optoelectronic switch is in " disconnection " state, is not to close lighting apparatus fully, but makes it to reduce brightness., at first the on/off two states of mains switch to be changed for this reason, that the intednsity circuit that making becomes lighting apparatus can be discerned, with low-voltage direct digital signaling zero/1 of AC power electric insulation.
In order to reduce active power loss, the method for obtaining information from supply voltage with the pure resistance voltage divider must be used the resistance of high value.Doing with controllable silicon under the situation of switching device, the electric current of the divider resistance of flowing through often is not enough to reach the necessary electric current of keeping of controllable silicon work.
The utility model content
Technical problem to be solved in the utility model be to provide a kind of both satisfied when adopting controllable silicon to make switch element enough electric currents of keeping can be arranged, avoid producing the Univoltage switch status conversion circuit of big active power loss again.
In order to solve above technical problem, the utility model provides a kind of Univoltage switch status conversion circuit, the single-power voltage input is through the dummy load capacitor C 1 of switch S and back thereof, the bridge rectifier that constitutes with D1～D4 is connected, voltage after the rectification after divider resistance R1, R2 dividing potential drop and capacitor C 2 filtering, is connected in series a voltage-stabiliser tube ZD1 and is connected with photoelectrical coupler U, photoelectrical coupler load R4 is connected with low-voltage Vcc, from photoelectrical coupler load output low level digital signaling zero/1.
The output voltage of described divider resistance R1, R2 dividing potential drop is greater than voltage-stabiliser tube ZD1 and photoelectrical coupler U conducting voltage sum.
Described divider resistance R1, R2 perhaps are connected the back of dummy load capacitor C 1, and this moment, the filter capacitor C2 of rectification output also met a filter resistance R3.
Described dummy load capacitor C 1 is set because it produces minimum secondary power loss to power supply, but can the controllable silicon of giving security during as switch element with controllable silicon can operate as normal keep electric current.
When mains switch S closes, the voltage at described dummy load capacitor C 1 two ends is exactly supply voltage, when mains switch S transfers disconnection to by closure, according to the resistance of capacity and the described divider resistance R1 and the R2 of described dummy load capacitor C 1, the voltage at dummy load capacitor C 1 two ends is reduced to below 1/5th of supply voltage in the time that limits.Because supply voltage is relatively-stationary single alternating voltage numerical value, as 110V, 120V, 220V, 240V, 277V or the like is easy to choose on request and determine the resistance of capacity and the described divider resistance R1 and the R2 of described dummy load capacitor C 1.
Voltage on the described dummy load capacitor C 1 obtains commutating voltage Ua through divider resistance R1 and R2 dividing potential drop and through described bridge rectifier D 1～D4 rectification through filter resistance R3 and filter capacitor C2 filtering.Voltage on the perhaps dummy load capacitor C 1 is earlier through bridge rectifier D 1～D4 rectification, can obtain commutating voltage Ua equally by divider resistance R1 and R2 dividing potential drop and filter capacitor filtering C2 again.
When mains switch S is closed, the direct voltage Ua that dividing potential drop rectification or rectification and voltage division obtain is higher than the forward conduction voltage sum of the light emitting devices of the puncture voltage of voltage stabilizing didoe ZD1 and photoelectrical coupler U, thereby there is electric current to flow through the light emitting devices of voltage stabilizing didoe ZD1 and photoelectrical coupler U, the light receiving element of photoelectrical coupler U is through output resistance R4 output voltage V cc, promptly digital low level " 0 ".
When mains switch S disconnects, voltage U a drops to the puncture voltage that is lower than voltage stabilizing didoe ZD1 at the appointed time rapidly, there is not electric current to flow through the light emitting devices of voltage stabilizing didoe ZD1 and photoelectrical coupler U, the light receiving element of photoelectrical coupler U is through output resistance R4 output voltage V cc, i.e. digital high " 1 ".
Superior effect of the present utility model is: Univoltage switch status conversion circuit of the present utility model is when converting the on/off two states of mains switch to DC low-voltage 0/1 digital controlled signal effectively, also make output and input realize insulation on electric by photoelectrical coupler, promptly electricity is isolated.
Description of drawings
Accompanying drawing 1 is the circuit diagram of one of Univoltage switch status conversion circuit of the present utility model;
Accompanying drawing 2 is two a circuit diagram of Univoltage switch status conversion circuit of the present utility model;
The number in the figure explanation
L-AC power phase line; The R3-filter resistance;
N-AC power center line; The R4-output resistance;
The S-mains switch; The ZD1-voltage stabilizing didoe;
C1-dummy load electric capacity; The U-photoelectrical coupler;
The C2-filter capacitor; The 0/1 numeral output of DC-direct current;
D1～D4-bridge rectifier; Ua-on off state voltage;
R1, the R2-divider resistance.
Embodiment
Shown in accompanying drawing, the utility model will be further described.
The utility model provides a kind of Univoltage switch status conversion circuit, the single-power voltage input is through the dummy load capacitor C 1 of switch S and back thereof, the bridge rectifier that constitutes with D1～D4 is connected, voltage after the rectification, after divider resistance R1, R2 dividing potential drop and capacitor C 2 filtering, be connected in series a voltage-stabiliser tube ZD1 and be connected with photoelectrical coupler U, photoelectrical coupler load R4 is connected with low-voltage Vcc, from photoelectrical coupler load output low level digital signaling zero/1.
The output voltage of described divider resistance R1, R2 dividing potential drop is greater than voltage-stabiliser tube ZD1 and photoelectrical coupler U conducting voltage sum.
Described divider resistance R1, R2 perhaps are connected the back of dummy load capacitor C 1, and this moment, the filter capacitor C2 of rectification output also met a filter resistance R3.
As shown in Figure 1, described divider resistance R1 and R2 are connected in the two ends of dummy load capacitor C 1 in parallel, the positive pole of two diodes of described bridge rectifier D 1～D4 and the input (～) that negative pole joins are connected in divider resistance R2 two ends in parallel, filter resistance R3 and filter capacitor C2 are connected in parallel on two outputs of bridge rectifier D 1～D4 after being connected in parallel again, and the negative output terminal (-) that the positive output end (+) that the positive pole of filter capacitor C2 and negative pole join with the negative pole of two diodes of bridge rectifier D 1～D4 respectively and the positive pole of two diodes join joins.The points of common connection a of the positive output end (+) of bridge rectifier D 1～D4, the positive pole of filter capacitor C2 and filter resistance R3 is connected with the negative electrode of voltage stabilizing didoe ZD1.The voltage of getting on divider resistance R2 obtains the low dc voltage Ua of a representation switch state through bridge rectifier D 1～D4 rectification at a point after filter resistance R3 and filter capacitor C2 filtering.The points of common connection of the negative output terminal (-) of bridge rectifier D 1～D4, the negative pole of filter capacitor C2 and filter resistance R3 is connected with the negative electrode of photoelectrical coupler U light emitting devices.The anode of photoelectrical coupler U light emitting devices is connected with the anode of voltage stabilizing didoe ZD1.
Or press Fig. 2, the positive pole of two diodes of described bridge rectifier D 1～D4 and the input (～) that negative pole joins are connected in the two ends of described dummy load capacitor C 1 in parallel.Divider resistance R1 and R2 are connected in parallel on (+) and (-) two outputs of bridge rectifier D 1～D4.Filter capacitor C2 is connected in parallel on the divider resistance R2, and the binding site of the positive pole of filter capacitor C2, the negative pole of voltage stabilizing didoe and divider resistance R1 and R2 links together at a point.The points of common connection that the other end of the negative output terminal (-) of described bridge rectifier D 1～D4, the negative pole of filter capacitor C2 and divider resistance R2 combines is connected with the negative electrode of photoelectrical coupler U light emitting devices.The anode of photoelectrical coupler U light emitting devices is connected with the anode of voltage stabilizing didoe ZD1.
According to the rated value of supply voltage and the fluctuation range of regulation, choose suitable divider resistance R1 and the voltage ratio of R2, make at mains switch S during by closure, on off state voltage U a is a little more than puncture voltage and the photoelectrical coupler U light emitting devices forward conduction voltage sum of voltage stabilizing didoe ZD1, thereby having electric current to flow through the light emitting devices of voltage stabilizing didoe ZD1 and photoelectrical coupler U, the light receiving element of photoelectrical coupler U is exported digital low level " 0 " through output resistance R4.
At mains switch S when disconnecting, on off state voltage U a will drop to the puncture voltage that is lower than voltage stabilizing didoe ZD1 rapidly, after this just do not have electric current to flow through the light emitting devices of voltage stabilizing didoe ZD1 and photoelectrical coupler U, the light receiving element of photoelectrical coupler U is through output resistance R4 output digital high " 1 ".
By above-mentioned Univoltage switch status conversion circuit, under the condition of single supply power voltage, it is corresponding to have realized that effectively the mains switch on off state has obtained with on off state through change-over circuit, electric going up and the DC low-voltage digital controlled signal 0/1 of isolated from power.
Claims (3)
1. Univoltage switch status conversion circuit is characterized in that:
The single-power voltage input is through the dummy load capacitor C 1 of switch S and back thereof, the bridge rectifier that constitutes with D1～D4 is connected, voltage after the rectification, after divider resistance R1, R2 dividing potential drop and capacitor C 2 filtering, being connected in series a voltage-stabiliser tube ZD1 is connected with photoelectrical coupler U, photoelectrical coupler load R4 is connected with low-voltage Vcc, from photoelectrical coupler load output low level digital signaling zero/1.
2. by the described Univoltage switch status conversion circuit of claim 1, it is characterized in that:
The output voltage of described divider resistance R1, R2 dividing potential drop is greater than voltage-stabiliser tube ZD1 and photoelectrical coupler U conducting voltage sum.
3. by the described Univoltage switch status conversion circuit of claim 1, it is characterized in that:
Described divider resistance R1, R2 perhaps are connected the back of dummy load capacitor C 1, and this moment, the filter capacitor C2 of rectification output also met a filter resistance R3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202360583U CN201742312U (en) | 2010-06-24 | 2010-06-24 | Single-voltage switch state converting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202360583U CN201742312U (en) | 2010-06-24 | 2010-06-24 | Single-voltage switch state converting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201742312U true CN201742312U (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202360583U Expired - Lifetime CN201742312U (en) | 2010-06-24 | 2010-06-24 | Single-voltage switch state converting circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN201742312U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867309A (en) * | 2010-06-24 | 2010-10-20 | 上海阿卡得电子有限公司 | Univoltage switch status conversion circuit |
| CN104360699A (en) * | 2014-10-24 | 2015-02-18 | 潍柴动力股份有限公司 | Temperature control circuit, temperature control method and temperature control device |
-
2010
- 2010-06-24 CN CN2010202360583U patent/CN201742312U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867309A (en) * | 2010-06-24 | 2010-10-20 | 上海阿卡得电子有限公司 | Univoltage switch status conversion circuit |
| CN104360699A (en) * | 2014-10-24 | 2015-02-18 | 潍柴动力股份有限公司 | Temperature control circuit, temperature control method and temperature control device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |