CN108155898A - A kind of optical fiber trigger circuit - Google Patents
A kind of optical fiber trigger circuit Download PDFInfo
- Publication number
- CN108155898A CN108155898A CN201711381183.6A CN201711381183A CN108155898A CN 108155898 A CN108155898 A CN 108155898A CN 201711381183 A CN201711381183 A CN 201711381183A CN 108155898 A CN108155898 A CN 108155898A
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- China
- Prior art keywords
- resistance
- scr
- diode
- silicon controlled
- controlled rectifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/567—Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
Abstract
The invention discloses a kind of optical fiber trigger circuits, it includes light receiver, photoelectrical coupler, the silicon controlled rectifier (SCR) being connected in inverse parallel, rectifier circuit, the silicon controlled rectifier (SCR) of two series aiding connections, stable+5V voltages are provided by Voltage stabilizing module, light receiver receives the optical signal from optical fiber, and can realize silicon controlled rectifier (SCR) has the conducting of light zero cross fired and unglazed automatic cut-off.
Description
Technical field
The present invention relates to a kind of optical fiber trigger circuits more particularly to a kind of optical fiber with silicon controlled rectifier (SCR) to trigger electricity
Road.
Background technology
In order to realize accurate quick stability contorting, the synchronization triggering technique of core power device is highly important.It passes
The trigger circuit of system is since electrical isolation problem cannot be advantageously applied to middle-and-high voltage system, and at present, static reacance rate technology should
During for middle-and-high voltage system, core power device is generally using series connection voltage divider techniques composition silicon controlled rectifier device assembly intervention system
System, but its Triggering Control System belongs to low pressure weak electricity system, it is necessary to trigger pulse is realized by high-low pressure electrical isolation technology
The long distance transmission of signal solves high-low pressure electrical isolation and electromagnetic interference problem.Optical fiber triggering system of the prior art simultaneously
Also there is power supply instability in system.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of optical fiber trigger circuit, including first resistor, second resistance, the
Three resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the first silicon controlled rectifier
Device, the second silicon controlled rectifier (SCR), third silicon controlled rectifier (SCR), the 4th silicon controlled rectifier (SCR), the first diode, the second diode,
Third diode, the 4th diode, the 5th diode, the 6th diode, the 7th diode, the first capacitance, the second capacitance, first
Photoelectrical coupler, the second photoelectrical coupler, triode, zener diode, Voltage stabilizing module, light receiver；Wherein the three or two pole
Pipe, the 4th diode, the 5th diode, the 6th diode form rectification module；First silicon controlled rectifier (SCR) and second silicon-controlled
The both ends for the parallel circuit that rectifier reverse parallel connection, the first silicon controlled rectifier (SCR) and the second silicon controlled rectifier (SCR) are formed connect respectively
The anode and cathode of power supply；First resistor and the first diode form parallel circuit, which connects positive pole,
The other end is connected to the input terminal of rectification circuit, and second resistance and the second diode form parallel circuit, the parallel circuit one end
Power cathode is connected to, the other end is connected to another input terminal of rectification circuit；The cathode series connection of third silicon controlled rectifier (SCR) connects
The anode of the 4th silicon controlled rectifier (SCR) is connect, the anode of third silicon controlled rectifier (SCR) is connected to one end of 3rd resistor, and control pole connects
It is connected to the other end of 3rd resistor and one end of the first photoelectrical coupler；The anode of 4th silicon controlled rectifier (SCR) is connected to the 4th electricity
One end of resistance, control pole are connected to the other end of the 4th resistance and one end of the second photoelectrical coupler, minus earth simultaneously；Three poles
The emitter of pipe is connected to the first photoelectrical coupler, and collector is connected to the 5th resistance, and base stage is connected to the 6th resistance and the 7th
One end of resistance, the other end of the 7th resistance are connected to light receiver；Voltage stabilizing module selected as AMS1117 chips therein,
Its offer+5V voltages are to light receiver；Photoelectrical coupler selected as TLP521-4 opto-coupler chips therein；First capacitance and
Two capacitances are electrolytic capacitor, and anode is connected to Voltage stabilizing module, cathode ground connection.
The rectified module rectification of alternating voltage obtains pulsating dc voltage, the pulsating dc voltage by the 8th resistance,
After 7th diode and zener diode, output+10V the voltages ,+10V voltages are electrolysed through AMS1117 chips and first
After capacitance and the effect of the second electrolytic capacitor, output+5V DC voltages, the 8th resistance is 5k Ω.
Description of the drawings
Fig. 1 circuit connection diagrams of the present invention.
The internal structure chart of Fig. 2 light receivers.
Specific embodiment
Fig. 1 is the connection diagram of the optical fiber trigger circuit of the present invention, including first resistor R1, second resistance R2, third
Resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, first
Silicon controlled rectifier (SCR) VT1, the second silicon controlled rectifier (SCR) VT2, third silicon controlled rectifier (SCR) VT3, the 4th silicon controlled rectifier (SCR) VT4,
First diode D1, the second diode D2, third diode D3, the 4th diode D4, the 5th diode D5, the 6th diode
D6, the 7th diode D7, the first capacitance C1, the second capacitance C2, the first photoelectrical coupler, the second photoelectrical coupler, triode T1,
Zener diode VDZ, Voltage stabilizing module, light receiver；Wherein third --- the 6th diode D3 --- D6 forms rectifier bridge；The
One silicon controlled rectifier (SCR) VT1 and the second silicon controlled rectifier (SCR) VT2 reverse parallel connections, the first silicon controlled rectifier (SCR) and second silicon-controlled whole
The both ends of parallel circuit that stream device is formed connect the anode and cathode of power supply respectively；First resistor R1 and the first diode D1 is formed
Parallel circuit, parallel circuit one end connection positive pole, the other end are connected to the input terminal of rectification circuit, second resistance R2 and
Second diode D2 forms parallel circuit, which is connected to power cathode, and the other end is connected to rectification circuit
Another input terminal；The cathode of third silicon controlled rectifier (SCR) VT3 is connected in series with the anode of the 4th silicon controlled rectifier (SCR) VT4, and third can
The anode of control silicon rectifier VT3 is connected to one end of 3rd resistor R3, and control pole is connected to the other end and the of 3rd resistor R3
One end of the output terminal of one photoelectrical coupler；The anode of 4th silicon controlled rectifier (SCR) VT4 is connected to one end of the 4th resistance R4, control
Pole processed is connected to one end of the other end of the 4th resistance R4 and the output terminal of the second photoelectrical coupler, minus earth simultaneously；Three poles
The emitter of pipe T1 is connected to one end of the first photoelectrical coupler input terminal, and collector is connected to the 5th resistance R5, base stage connection
To one end of the 6th resistance R6 and the 7th resistance R7, the other end of the 7th resistance R7 is connected to No. four feet of light receiver, light
No. 1 foot and No. 2 feet of line receiver are grounded, and No. 3 feet are connected to+5V voltages, Voltage stabilizing module selected as AMS1117 chips, light
Electric coupler selected as TLP521-4 opto-coupler chips, the first capacitance and the second capacitance are electrolytic capacitor, and anode is connected to surely
Die block, cathode ground connection, the rectified module rectification of alternating voltage obtain pulsating dc voltage, and the pulsating dc voltage is by the
After eight resistance, the 7th diode and zener diode, output+10V voltages ,+10V the voltages through AMS1117 chips and
After first electrolytic capacitor and the effect of the second electrolytic capacitor, output+5V DC voltages, the resistance value selected as 5k Ω of the 8th resistance.
During the silicon controlled rectifier (SCR) cut-off of reverse parallel connection, both end voltage obtains+5V optical receivers through hvdc circuit
Required DC power supply, supply voltage pass through silicon controlled rectifier (SCR), first resistor R1 (second resistance), rectifier bridge and third electricity
It hinders R3, the 4th resistance R4, the 9th resistance R9, the first diode D1 (the second diode) and forms circuit, light receiver receives warp
After optical fiber is to optical signals, light receiver output triode saturation conduction, the 7th resistance eutral grounding, rectifier bridge both ends output electricity
Relatively low while the third and fourth silicon controlled rectifier (SCR) is pressed to meet forward conduction condition, the 7th resistance obtains smaller partial pressure, clamps down on
The base voltage of triode T1, triode cut-off, the first and second photoelectrical couplers end the third and fourth silicon controlled rectifier (SCR)
Base circuit conducting is obtained, the silicon controlled rectifier (SCR) both end voltage being connected in inverse parallel is connected after reaching rated value, rectifier
Both ends output voltage is higher, and the 7th resistance obtains larger partial pressure, transistor base is clamped down on so as to lose, triode is led
Logical, the first and second photoelectrical couplers conducting, the third and fourth silicon controlled rectifier (SCR) ends in current over-zero, reverse parallel connection
First and second silicon controlled rectifier (SCR)s end in current over-zero.
When light receiver is not received by optical signal, the output triode in light receiver is equivalent to disconnection, rectification
The voltage of device both ends output terminal is connected by the 6th resistance trigger triode T1, the conducting of the first and second photoelectrical couplers, third
End with the 4th silicon controlled rectifier (SCR), the first and second silicon controlled rectifier (SCR)s being connected in inverse parallel end in current over-zero.
Only illustrate technical scheme of the present invention rather than its limitations with reference to above-described embodiment.The ordinary skill people of fields
Member it is to be understood that those skilled in the art can to the present invention specific embodiment be modified or replaced equivalently, but
These modifications or change are being applied within pending claims.
Claims (6)
1. a kind of optical fiber trigger circuit, it is characterised in that：Including first resistor, second resistance, 3rd resistor, the 4th resistance,
Five resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the first silicon controlled rectifier (SCR), the second silicon controlled rectifier (SCR),
Third silicon controlled rectifier (SCR), the 4th silicon controlled rectifier (SCR), the first diode, the second diode, third diode, the four or two pole
Pipe, the 5th diode, the 6th diode, the 7th diode, the first capacitance, the second capacitance, the first photoelectrical coupler, the second photoelectricity
Coupler, triode, zener diode, Voltage stabilizing module, light receiver；Wherein third diode, the 4th diode, the five or two
Pole pipe, the 6th diode form rectification module；First silicon controlled rectifier (SCR) and the second silicon controlled rectifier (SCR) reverse parallel connection, first can
The both ends of parallel circuit that control silicon rectifier and the second silicon controlled rectifier (SCR) are formed connect the anode and cathode of power supply respectively；First
Resistance and the first diode form parallel circuit, parallel circuit one end connection positive pole, and the other end is connected to rectification circuit
Input terminal, second resistance and the second diode form parallel circuit, which is connected to power cathode, the other end
It is connected to another input terminal of rectification circuit；The cathode of third silicon controlled rectifier (SCR) is connected in series with the sun of the 4th silicon controlled rectifier (SCR)
Pole, the anode of third silicon controlled rectifier (SCR) are connected to one end of 3rd resistor, control pole be connected to 3rd resistor the other end and
One end of first photoelectrical coupler；The anode of 4th silicon controlled rectifier (SCR) is connected to one end of the 4th resistance, and control pole connects simultaneously
It is connected to the other end of the 4th resistance and one end of the second photoelectrical coupler, minus earth；The emitter of triode is connected to first
Photoelectrical coupler, collector are connected to the 5th resistance, and base stage is connected to one end of the 6th resistance and the 7th resistance, the 7th resistance
The other end is connected to light receiver.
2. optical fiber trigger circuit according to claim 1, it is characterised in that：The Voltage stabilizing module selected as AMS1117
Chip, offer+5V voltages are to light receiver.
3. optical fiber trigger circuit according to claim 1, it is characterised in that：Photoelectrical coupler selected as therein
TLP521-4 opto-coupler chips.
4. optical fiber trigger circuit according to claim 2, it is characterised in that：First capacitance and the second capacitance are electrolysis electricity
Hold, anode is connected to Voltage stabilizing module, cathode ground connection.
5. optical fiber trigger circuit according to claim 4, it is characterised in that：The rectified module rectification of alternating voltage obtains arteries and veins
Dynamic DC voltage, the pulsating dc voltage pass through after the 8th resistance, the 7th diode and zener diode, output+10V
Voltage, after+10V the voltages are acted on through AMS1117 chips and the first electrolytic capacitor and the second electrolytic capacitor, output+5V is straight
Galvanic electricity pressure.
6. optical fiber trigger circuit according to claim 5, it is characterised in that：8th resistance therein is 5k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711381183.6A CN108155898A (en) | 2017-12-20 | 2017-12-20 | A kind of optical fiber trigger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711381183.6A CN108155898A (en) | 2017-12-20 | 2017-12-20 | A kind of optical fiber trigger circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108155898A true CN108155898A (en) | 2018-06-12 |
Family
ID=62464174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711381183.6A Pending CN108155898A (en) | 2017-12-20 | 2017-12-20 | A kind of optical fiber trigger circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108155898A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2768365A2 (en) * | 2011-10-19 | 2014-08-27 | Bobrick Washroom Equipment, Inc. | Automated fluid dispensing system |
| CN104333364A (en) * | 2014-11-04 | 2015-02-04 | 许蓬 | AC solid state relay and fault detecting method of load circuit of same |
-
2017
- 2017-12-20 CN CN201711381183.6A patent/CN108155898A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2768365A2 (en) * | 2011-10-19 | 2014-08-27 | Bobrick Washroom Equipment, Inc. | Automated fluid dispensing system |
| CN104333364A (en) * | 2014-11-04 | 2015-02-04 | 许蓬 | AC solid state relay and fault detecting method of load circuit of same |
Non-Patent Citations (1)
| Title |
|---|
| 赵玉林 等: "配电变压器无触点有载调压中反并联晶闸管光纤触发方案", 《电力系统自动化》 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180612 |