CN204031112U - A kind of isolated form controllable silicon drive circuit - Google Patents
A kind of isolated form controllable silicon drive circuit Download PDFInfo
- Publication number
- CN204031112U CN204031112U CN201420438331.9U CN201420438331U CN204031112U CN 204031112 U CN204031112 U CN 204031112U CN 201420438331 U CN201420438331 U CN 201420438331U CN 204031112 U CN204031112 U CN 204031112U
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- China
- Prior art keywords
- optocoupler
- auxiliary winding
- isolated form
- plain edition
- rectifier diode
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 21
- 239000010703 silicon Substances 0.000 title claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 61
- 239000003990 capacitor Substances 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model relates to a kind of isolated form controllable silicon drive circuit, comprise isolated form transformer, plain edition optocoupler, rectifier diode and electric capacity, described isolated form transformer comprises main winding, first auxiliary winding and the second auxiliary winding, described main winding is connected with 220V AC power, the output of described first auxiliary winding is connected with the anode of described plain edition optocoupler, the negative electrode of described plain edition optocoupler is connected with the control drive singal of single-chip microcomputer, one end of described second auxiliary winding is connected with the collector electrode of described plain edition optocoupler through the forward end of described rectifier diode, the other end ground connection of described second auxiliary winding, between the negative end that described electric capacity is connected to described rectifier diode and ground.The utility model is by increase by second auxiliary winding, rectifier diode is utilized to form stable voltage to capacitance stores, for plain edition optocoupler provides power supply, thus realize driving and the isolated form silicon controlled driving gate electrode current of plain edition optocoupler, make driving more reliable and more stable.
Description
Technical field
The utility model relates to a kind of isolated form controllable silicon drive circuit.
Background technology
General isolated form silicon controlled drive circuit, need to keep apart by the working power of isolated form transformer by forceful electric power and opto-coupler chip, therefore, control isolated form controllable silicon and generally adopt special isolated form optocoupler to realize, such as MOC3021 chip, but its price is higher.
Utility model content
The utility model provides a kind of isolated form controllable silicon drive circuit, adopts the plain edition optocoupler of power supply separately to realize isolated form silicon controlled and drives, and to reduce costs, improves isolated form silicon controlled control effects simultaneously.
For solving the problems of the technologies described above, the utility model provides a kind of isolated form controllable silicon drive circuit, comprise isolated form transformer, plain edition optocoupler, rectifier diode and electric capacity, described isolated form transformer comprises main winding, first auxiliary winding and the second auxiliary winding, described main winding is connected with 220V AC power, the output of described first auxiliary winding is connected with the anode of described plain edition optocoupler, the negative electrode of described plain edition optocoupler is connected with the control drive singal of single-chip microcomputer, one end of described second auxiliary winding is connected with the collector electrode of described plain edition optocoupler through the forward end of described rectifier diode, the other end ground connection of described second auxiliary winding, between the negative end that described electric capacity is connected to described rectifier diode and ground.
Preferably, described main winding and described first auxiliary winding are isolated, and described main winding and described second auxiliary winding are not isolated.
Preferably, described electric capacity is electrochemical capacitor, and the positive pole of described electrochemical capacitor is connected with the negative end of described rectifier diode, the minus earth of described electrochemical capacitor.
The isolated form controllable silicon drive circuit that the utility model provides, comprise isolated form transformer, plain edition optocoupler, rectifier diode and electric capacity, described isolated form transformer comprises main winding, first auxiliary winding and the second auxiliary winding, described main winding is connected with 220V AC power, the output of described first auxiliary winding is connected with the anode of described plain edition optocoupler, the negative electrode of described plain edition optocoupler is connected with the control drive singal of single-chip microcomputer, one end of described second auxiliary winding is connected with the collector electrode of described plain edition optocoupler through the forward end of described rectifier diode, the other end ground connection of described second auxiliary winding, between the negative end that described electric capacity is connected to described rectifier diode and ground.The utility model is by increase by second auxiliary winding, rectifier diode is utilized to form stable voltage to capacitance stores, for plain edition optocoupler provides power supply, thus realize driving and the isolated form silicon controlled driving gate electrode current of plain edition optocoupler, make driving more reliable and more stable.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the isolated form controllable silicon drive circuit of the utility model one embodiment.
Embodiment
In order to the technical scheme of the above-mentioned utility model of more detailed statement, below list specific embodiment and carry out Proof Technology effect; It is emphasized that these embodiments are not limited to for illustration of the utility model limit scope of the present utility model.
The isolated form controllable silicon drive circuit that the utility model provides, as shown in Figure 1, comprise isolated form transformer T, plain edition optocoupler U (such as PC817, PC123 etc.), rectifier diode D and electric capacity C, described isolated form transformer T comprises main winding (1/3), first auxiliary winding (7/10) and the second auxiliary winding (5/6), described main winding is connected with 220V AC power (not shown), the output of described first auxiliary winding is connected with the anode (pin 1) of described plain edition optocoupler U, in the present embodiment, described first auxiliary winding produces the voltage of 12V, the voltage of this 12V is utilized to power for plain edition optocoupler U, the negative electrode (pin 2) of described plain edition optocoupler U is connected with the control drive singal of single-chip microcomputer, one end of described second auxiliary winding is connected with the collector electrode (pin 4) of described plain edition optocoupler U through the forward end of described rectifier diode D, the other end (pin 6) ground connection of described second auxiliary winding, between the negative end that described electric capacity C is connected to described rectifier diode D and ground.The utility model is by increasing by the second auxiliary winding when isolated form transformer T designs, the stable voltage VRef of formation is stored to electric capacity C by rectifier diode D, for described plain edition optocoupler U provides power supply, thus realize driving and the silicon controlled driving gate electrode current of optocoupler, make driving more reliable and more stable, and compared to isolated form optocoupler, the cost of plain edition optocoupler U is lower.
Preferably, please continue to refer to Fig. 1, described main winding and described first auxiliary winding are isolated, and described main winding and described second auxiliary winding are not isolated, and wherein the pin 3 of main winding and the pin 7 of the first auxiliary winding are Same Name of Ends.Preferably, described electric capacity C is electrochemical capacitor, and the positive pole of described electrochemical capacitor is connected with the negative end of described rectifier diode D, the minus earth of described electrochemical capacitor, and the capacitance of described electrochemical capacitor is large, and cost is low.
In sum, the isolated form controllable silicon drive circuit that the utility model provides, comprise isolated form transformer T, plain edition optocoupler U, rectifier diode D and electric capacity C, described isolated form transformer T comprises main winding, first auxiliary winding and the second auxiliary winding, described main winding is connected with 220V AC power, the output of described first auxiliary winding is connected with the anode of described plain edition optocoupler U, the described negative electrode of plain edition optocoupler U is connected with the control drive singal of single-chip microcomputer, one end of described second auxiliary winding is connected with the collector electrode of described plain edition optocoupler U through the forward end of described rectifier diode D, the other end ground connection of described second auxiliary winding, between the negative end that described electric capacity C is connected to described rectifier diode D and ground.The utility model is by increase by second auxiliary winding, utilize rectifier diode D to store to electric capacity C and form stable voltage, for plain edition optocoupler U provides power supply, thus realize driving and the isolated form silicon controlled driving gate electrode current of plain edition optocoupler U, make driving more reliable and more stable.
Obviously, those skilled in the art can carry out various change and modification to utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (3)
1. an isolated form controllable silicon drive circuit, it is characterized in that, comprise isolated form transformer, plain edition optocoupler, rectifier diode and electric capacity, described isolated form transformer comprises main winding, first auxiliary winding and the second auxiliary winding, described main winding is connected with 220V AC power, the output of described first auxiliary winding is connected with the anode of described plain edition optocoupler, the negative electrode of described plain edition optocoupler is connected with the control drive singal of single-chip microcomputer, one end of described second auxiliary winding is connected with the collector electrode of described plain edition optocoupler through the forward end of described rectifier diode, the other end ground connection of described second auxiliary winding, between the negative end that described electric capacity is connected to described rectifier diode and ground.
2. isolated form controllable silicon drive circuit as claimed in claim 1, it is characterized in that, described main winding and described first auxiliary winding are isolated, and described main winding and described second auxiliary winding are not isolated.
3. isolated form controllable silicon drive circuit as claimed in claim 1, it is characterized in that, described electric capacity is electrochemical capacitor, and the positive pole of described electrochemical capacitor is connected with the negative end of described rectifier diode, the minus earth of described electrochemical capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438331.9U CN204031112U (en) | 2014-08-05 | 2014-08-05 | A kind of isolated form controllable silicon drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438331.9U CN204031112U (en) | 2014-08-05 | 2014-08-05 | A kind of isolated form controllable silicon drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204031112U true CN204031112U (en) | 2014-12-17 |
Family
ID=52070936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420438331.9U Expired - Fee Related CN204031112U (en) | 2014-08-05 | 2014-08-05 | A kind of isolated form controllable silicon drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204031112U (en) |
-
2014
- 2014-08-05 CN CN201420438331.9U patent/CN204031112U/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: 20141217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |