CN106658826B - Two road list firewire switch of one kind - Google Patents
Two road list firewire switch of one kind Download PDFInfo
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- CN106658826B CN106658826B CN201611007481.4A CN201611007481A CN106658826B CN 106658826 B CN106658826 B CN 106658826B CN 201611007481 A CN201611007481 A CN 201611007481A CN 106658826 B CN106658826 B CN 106658826B
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- diode
- power supply
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- capacitance
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
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Abstract
The present invention relates to two road list firewire switches of one kind, including Switching Power Supply, metal-oxide-semiconductor power supply module, relay K1 and relay K2, the relay K1 are for controlling single firewire L to load LED1 power supplies or stopping power supply；The relay K2 is for controlling single firewire L to load LED2 power supplies or stopping power supply；Forming circuit gives switch complete machine power supply between the Switching Power Supply is used to make when the relay K1 is disconnected single firewire L and loads the zero curve N that LED1 reflux comes；The metal-oxide-semiconductor power supply module is used to generate pulse pressure drop when the relay K1 is closed and the Switching Power Supply is replaced to give switch complete machine power supply.The present invention is since MOS power supply module internal resistances are low, driving current is small, load current is big, calorific value is low and the big shock proof feature of relay load keeps state switching quick and convenient, the interference to power grid can be reduced, while can be used on not having the switch position of zero curve N.
Description
Technical field
The present invention relates to a kind of soft-touch controls, and in particular to two road list firewire switch of one kind.
Background technology
Existing intelligent switch is realized using zero firewire power supply mode and using silicon-controlled single fiery way to take power；Zero fire
The switch of line is since it is desired that zero curve and firewire are powered, but the light switch contactor position filled mostly now is all without cloth zero
Line, so market utilization rate is not high；It is directed to for the LED lamp of low-power consumption to go out using the circuit of silicon-controlled single fiery way to take power
The problem of existing stroboscopic, and if the dry of power grid can be influenced to power grid generation interference according to silicon-controlled characteristic large-scale use
Only.
Invention content
Technical problem to be solved by the invention is to provide two road list firewire switches of one kind, it is possible to reduce power grid is interfered,
It can use on not having the switch position of zero curve simultaneously.
The technical solution that the present invention solves above-mentioned technical problem is as follows：Two road list firewire switch of one kind, including Switching Power Supply,
The input terminal of metal-oxide-semiconductor power supply module, relay K1 and relay K2, the Switching Power Supply are connected on single firewire L, the switch
The output end of power supply is connected to from the zero curve N that load LED1 reflux comes, and the input terminal of the metal-oxide-semiconductor power supply module is connected to
On single firewire L, the output end of the metal-oxide-semiconductor power supply module is connected to come through overload LED1 reflux by the relay K1
Zero curve N on, the relay K2 is connected between the single firewire L and zero curve N that comes through overload LED2 reflux；
The relay K1 is for controlling single firewire L to load LED1 power supplies or stopping power supply；
The relay K2 is for controlling single firewire L to load LED2 power supplies or stopping power supply；
The Switching Power Supply is used to make when the relay K1 is disconnected the zero curve that single firewire L comes with load LED1 reflux
Forming circuit gives switch complete machine power supply between N；
The metal-oxide-semiconductor power supply module, which is used to generate pulse pressure drop when the relay K1 is closed, replaces the Switching Power Supply
Give switch complete machine power supply.
The beneficial effects of the invention are as follows：Two road list firewire switch of one kind of the invention by relay switch Switching Power Supply with
Metal-oxide-semiconductor power supply module is to loading and switching complete machine power supply, since MOS power supply module internal resistances are low, driving current is small, load current
Greatly, calorific value is low and the big shock proof feature of relay load keeps state switching quick and convenient, it is possible to reduce the interference to power grid,
It can use on not having the switch position of zero curve N simultaneously.
Based on the above technical solution, the present invention can also be improved as follows.
Further, the metal-oxide-semiconductor power supply module generates pulse pressure drop after relay K1 closures makes the switch electricity
The input voltage in source reduces, and the Switching Power Supply stops generating the voltage for switch complete machine power supply because input voltage reduces
VCC, while the metal-oxide-semiconductor power supply module is generated for the voltage VCC to switch complete machine power supply；The driving end of the relay K1
It is connected on the voltage VCC that the metal-oxide-semiconductor power supply module generates；The driving end of the relay K2 is connected to the Switching Power Supply
On the voltage VCC of generation, the driving end of the relay K2 is additionally attached on the voltage VCC that the metal-oxide-semiconductor power supply module generates.
Further, the metal-oxide-semiconductor power supply module includes charging rectifier circuit, compares trigger circuit, metal-oxide-semiconductor unit and energy storage
The input terminal of circuit, the metal-oxide-semiconductor unit is connected on single firewire L, and the output end of the metal-oxide-semiconductor unit passes through the relay
K1 is connected on the zero curve through overload LED1, and the first input end of the charging rectifier circuit is connected on single firewire L, described
Second input terminal of charging rectifier circuit is connected on the common end between the metal-oxide-semiconductor unit and relay K1, the charging
The input terminal of the first output end trigger circuit compared with described of rectification circuit connects, the second output of the charging rectifier circuit
End is connected with the input terminal of the accumulator, and the output end of the relatively trigger circuit is connected to touching for the metal-oxide-semiconductor unit
On originator；
The charging rectifier circuit is used to provide triggering item to the relatively trigger circuit under the action of single firewire L powers
Part and to the accumulator charge；
The relatively trigger circuit, which is used to trigger the metal-oxide-semiconductor unit in conjunction with the charging rectifier circuit, is in work shape
State；
The metal-oxide-semiconductor unit is for list firewire L to be connected when the relay K1 is closed and loads the power supply between LED1
Access, while generating alternating-current pulse pressure drop；
The accumulator is used to provide voltage VDD1 under the action of metal-oxide-semiconductor unit generates alternating-current pulse pressure drop, and will
Voltage VDD1 carries out processing and generates the voltage VCC for replacing the Switching Power Supply to switch complete machine power supply.
Further, the charging rectifier circuit includes diode D3, diode D4, diode D5 and diode D6, described
The anode of diode D3 is connected on single firewire L, and the cathode of the diode D3 is connected with the cathode of the diode D6, described
The anode of diode D6 is connected on the swing arm foot of the relay K1, and the anode of the diode D5 is connected to the diode
Between D3 and the common end of diode D6, the cathode of the diode D5 is connected with the anode of the diode D4, two pole
The cathode of pipe D4 is connected on the accumulator.
Further, the metal-oxide-semiconductor unit includes metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3, and the source electrode of the metal-oxide-semiconductor Q1 is connected to single fire
On line L, the grid of the grounded drain of the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q1 passes sequentially through resistance R3 and resistance R5 and the MOS
The grid of pipe Q3 is connected, the grounded drain of the metal-oxide-semiconductor Q3, and the source electrode of the metal-oxide-semiconductor Q3 is connected to the dynamic of the relay K1
On arm foot.
Advantageous effect using above-mentioned further scheme is：Metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3 internal resistances in metal-oxide-semiconductor unit are low, drive
Streaming current is small, the big feature low with calorific value of load current so that reduces the interference to power grid.
Further, it is described relatively trigger circuit include capacitance C5, zener diode DZ2, operational amplifier U4, resistance R8,
Capacitance C7, resistance R9, resistance R10, triode Q4, resistance R13, resistance R12 and capacitance C6, the anode of the capacitance C5 are connected to
Between the diode D3 and the common end of diode D6, the cathode of the capacitance C5 is grounded, and the zener diode DZ2's is negative
Pole is connected between the diode D3 and the common end of diode D6, and the anode of the zener diode DZ2 is connected to described
In the noninverting input of operational amplifier U4, the reverse input end of the operational amplifier U4 is connected to electricity by the resistance R8
It presses on VDD, a power end of the operational amplifier U4 is grounded, and another power end of the operational amplifier U4 is connected to
On common end between the diode D4 and diode D5, the output end of the operational amplifier U4 is connected to the resistance R3
On common end between resistance R5, the anode of the capacitance C7 is connected to the zener diode DZ2 and operational amplifier U4
Between common end on, the cathode of the capacitance C7 is grounded, one end of the resistance R9 be connected to the zener diode DZ2 with
On common end between operational amplifier U4, the other end of the resistance R9 is grounded, and one end of the resistance R10 is connected to described
On common end between resistance R8 and operational amplifier U4, the other end of the resistance R10 is connected to the collection of the triode Q4
On electrode, the emitter of the triode Q4 is grounded, and the base stage of the triode Q4 is connected to the electricity by the resistance R13
It hinders on the common end between R3 and resistance R5, one end of the resistance R12 is grounded, and the other end of the resistance R12 is connected to institute
It states on the common end between resistance R3 and resistance R5, the cathode of the plus earth of the capacitance C6, the capacitance C6 is connected to institute
It states on the common end between resistance R3 and resistance R5.
Further, the accumulator includes capacitance C9, diode D12 and zener diode DZ3, and the capacitance C9 is just
Pole is connected on the cathode of the diode D4, and voltage VDD1, the cathode of the capacitance C9 are provided on the anode of the capacitance C9
Ground connection, the anode of the diode D12 are connected on the anode of the capacitance C9, the cathode of the diode and the voltage stabilizing two
The cathode of pole pipe DZ3 is connected, and the anode of the zener diode DZ3 is generated to the voltage VCC of switch complete machine power supply.
Further, the Switching Power Supply is auto-excitation type RC oscillation switch power supplys, and the switching power circuit includes rectifier bridge
U2, resistance R1, resistance R2, resistance R4, capacitance C2, transformer T1, triode Q2, diode D7, capacitance C4, resistance R6, capacitance
C3, voltage stabilizing isolation optocoupler O1, zener diode ZD1, resistance R7, diode D1 and diode D2, one of the rectifier bridge U2
Input terminal is connected on single firewire L, and another input terminal of the rectifier bridge U2, which is connected to, to come through overload LED1 reflux
On zero curve N, the cathode output end of the rectifier bridge U2 passes sequentially through described resistance R1, R2 and R4 and the voltage stabilizing isolation optocoupler O1
Collector be connected, the anode of the capacitance C2 is connected on the common end between the resistance R1 and resistance R2, the capacitance
The cathode of C2 is connected on the cathode output end of the rectifier bridge U2, and one end of the primary coil of the transformer T1 is connected to institute
It states on the common end between resistance R1 and resistance R2, the other end of the primary coil of the transformer T1 is connected to the triode
On the collector of Q2, the base stage of the triode Q2 is connected to the common end between the resistance R4 and voltage stabilizing isolation optocoupler O1
On, the emitter of the triode Q2 is connected on the cathode output end of the rectifier bridge U2, and the anode of the diode D7 is even
It is connected on the emitter of the voltage stabilizing isolation optocoupler O1, the cathode of the diode D7 is connected to second of the transformer T1
On one end of grade coil, the other end of the second subprime coil of the transformer T1 is connected to the cathode output of the rectifier bridge U2
On end, the anode of the capacitance C4 is connected on the cathode output end of the rectifier bridge U2, and the cathode of the capacitance C4 is connected to
On the emitter of the voltage stabilizing isolation optocoupler O1, one end of the resistance R6 is connected on the cathode of the diode D7, described
The other end of resistance R6 is connected with the cathode of the capacitance C3, and the anode of the capacitance C3 is connected to the base stage of the triode Q2
On, the anode of the zener diode ZD1 is connected on the anode of the voltage stabilizing isolation optocoupler O1, the zener diode ZD1
Cathode be connected with one end of the resistance R7, the minus earth of the voltage stabilizing isolation optocoupler O1, the first of the transformer T1
One end of secondary coil is connected on the anode of the diode D1, the anode of the cathode of the diode D1 and the capacitance C9
It is connected, the other end ground connection of the first secondary coil of the transformer T1, the midpoint of the first secondary coil of the transformer T1
It is connected with the anode of the diode D2, the cathode of the diode D2 is connected with the other end of the resistance R7 and generates to opening
Close the voltage VCC of complete machine power supply.
Further, the normally open end of the relay K1 is connected on the zero curve N to come through overload LED1 reflux, it is described after
The normal-closed end of electric appliance K1 is hanging, and the driving input terminal of the relay K1 is connected on the anode of the capacitance C9, the relay
The drive output of device K1 is connected on the first output end of IC U5, and an input terminal of the IC U5 is connected to voltage
On VDD, another input terminal of the IC U5 is connected to by resistance R11 on the anode of the capacitance C9, the relay
Diode D8 is additionally provided between the driving input terminal and drive output of K1, the anode of the diode D8 is connected to the relay
The cathode of the driving input terminal of device K1, the diode D8 is connected in the drive output of the relay K1；
The swing arm foot of the relay K2 is connected on single firewire L, and the normally open end of the relay K2 is connected to by negative
It carries on the zero curve N that LED2 reflux comes, the normal-closed end of the relay K2 is hanging, and the driving end of the relay K2 includes driving
The driving input terminal of input terminal and drive output, the relay K2 is connected on the anode of the capacitance C9, the relay
The drive output of device K2 is connected in the second output terminal of the Building C I U5, and the driving input terminal of the relay K2 and driving are defeated
Diode D9 is additionally provided between outlet, the anode of the diode D9 is connected to the driving input terminal of the relay K2, described
The cathode of diode D9 is connected in the drive output of the relay K2.
Advantageous effect using above-mentioned further scheme is：Zero curve N is that load provides so that two road list firewires of the invention
Switch can use on not having the switch position of zero curve N.
Further, the voltage VDD is depressured to obtain by voltage VCC by reduction voltage circuit, and the reduction voltage circuit includes voltage stabilizing
The input terminal of device U6, capacitance C30, capacitance C1 and capacitance C10, the voltage-stablizer U6 are connected to the voltage of switch complete machine power supply
On VCC, the ground terminal of the voltage-stablizer U6 is grounded, and the cathode of the capacitance C30 is connected to the voltage VCC of switch complete machine power supply
On, the anode of the plus earth of the capacitance C30, the capacitance C1 is connected on the input terminal of the voltage-stablizer U6, the electricity
Hold the cathode ground connection of C1, two output ends of the voltage-stablizer are grounded by the capacitance C10 and are produced between the capacitance C10
Raw voltage VDD.
Description of the drawings
Fig. 1 is a kind of overall structure block diagram of two roads list firewire switch of the present invention；
Fig. 2 is the structure diagram of metal-oxide-semiconductor power supply module in a kind of two roads list firewire switch of the present invention；
Fig. 3 is a kind of overall structure circuit diagram of two roads list firewire switch of the present invention；
Fig. 4 is the circuit diagram of interface between J1-1 and J1-5 in Fig. 3；
Fig. 5 is the circuit diagram of K1A interfaces in Fig. 3；
Fig. 6 is the circuit diagram of VDD1 interfaces in Fig. 3；
Fig. 7 is the circuit structure diagram of the reduction voltage circuit in a kind of two roads list firewire switch of the present invention.
Specific implementation mode
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in Figure 1, two road list firewire switch of one kind, including Switching Power Supply, metal-oxide-semiconductor power supply module, relay K1 and after
The input terminal of electric appliance K2, the Switching Power Supply are connected on single firewire L, and the output end of the Switching Power Supply is connected to from load
On the zero curve N that LED1 reflux comes, the input terminal of the metal-oxide-semiconductor power supply module is connected on single firewire L, the metal-oxide-semiconductor power supply
The output end of module is connected to by the relay K1 on the zero curve N to come through overload LED1 reflux, the relay K2
It is connected between single firewire L and the zero curve N to come through overload LED2 reflux；The relay K1 for control single firewire L to
It loads LED1 power supplies or stops power supply；The relay K2 is for controlling single firewire L to load LED2 power supplies or stopping power supply；Institute
Switching Power Supply is stated to be formed between the zero curve N that comes for making single firewire L when the relay K1 is disconnected and loading LED1 to flow back
Switch complete machine power supply is given in circuit；The metal-oxide-semiconductor power supply module is used to generate pulse pressure drop when the relay K1 is closed and replace
The Switching Power Supply gives switch complete machine power supply.The metal-oxide-semiconductor power supply module generates pulse pressure drop after relay K1 closures
The input voltage of the Switching Power Supply is set to reduce, the Switching Power Supply stops generating for whole to switching because input voltage reduces
The voltage VCC of machine power supply, while the metal-oxide-semiconductor power supply module is generated for the voltage VCC to switch complete machine power supply；The relay
The driving end of device K1 is connected on the voltage VCC that the metal-oxide-semiconductor power supply module generates；The driving end of the relay K2 is connected to
On the voltage VCC that the Switching Power Supply generates, the driving end of the relay K2 is additionally attached to the metal-oxide-semiconductor power supply module and generates
Voltage VCC on.
Fig. 2 is the structure diagram of metal-oxide-semiconductor power supply module in a kind of two roads list firewire switch of the present invention；The metal-oxide-semiconductor power supply
Module includes charging rectifier circuit, compare trigger circuit, metal-oxide-semiconductor unit and accumulator, the input terminal of the metal-oxide-semiconductor unit connect
It is connected on single firewire L, the output end of the metal-oxide-semiconductor unit is connected to the zero curve through overload LED1 by the relay K1
On, the first input end of the charging rectifier circuit is connected on single firewire L, and the second input terminal of the charging rectifier circuit connects
Be connected on the common end between the metal-oxide-semiconductor unit and relay K1, the first output end of the charging rectifier circuit with it is described
Compare the input terminal connection of trigger circuit, the second output terminal of the charging rectifier circuit and the input terminal phase of the accumulator
Even, the output end of the relatively trigger circuit is connected in the triggering end of the metal-oxide-semiconductor unit；The charging rectifier circuit is used for
Trigger condition is provided to the relatively trigger circuit and charge to the accumulator under the action of single firewire L powers；It is described
It is in running order for triggering the metal-oxide-semiconductor unit in conjunction with the charging rectifier circuit to compare trigger circuit；The metal-oxide-semiconductor list
Member generates exchange arteries and veins for list firewire L to be connected when the relay K1 is closed and loads the supply access between LED1
Punching press is dropped；The accumulator is used to provide voltage VDD1 under the action of metal-oxide-semiconductor unit generates alternating-current pulse pressure drop, and will be electric
Pressure VDD1 carries out processing and generates the voltage VCC for replacing the Switching Power Supply to switch complete machine power supply.
Fig. 3 combinations Fig. 4, Fig. 5, Fig. 6 and Fig. 7 are a kind of overall structure circuit diagrams of two roads list firewire switch of the present invention.
Two road list firewire switch of one kind of the invention (including charging rectifier circuit, compares triggering electricity by metal-oxide-semiconductor power supply module
Road, metal-oxide-semiconductor unit and accumulator), the circuit structure of Switching Power Supply and relay K composition it is as follows：
The charging rectifier circuit includes diode D3, diode D4, diode D5 and diode D6, the diode D3
Anode be connected on single firewire L, the cathode of the diode D3 is connected with the cathode of the diode D6, the diode D6
Anode be connected on the swing arm foot of the relay K1, the anode of the diode D5 is connected to the diode D3 and two poles
Between the common end of pipe D6, the cathode of the diode D5 is connected with the anode of the diode D4, and the diode D4's is negative
Pole is connected on the accumulator.
The metal-oxide-semiconductor unit includes that the source electrode of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3, the metal-oxide-semiconductor Q1 are connected on single firewire L, institute
The grounded drain of metal-oxide-semiconductor Q1 is stated, the grid of the metal-oxide-semiconductor Q1 passes sequentially through the grid of resistance R3 and resistance R5 and the metal-oxide-semiconductor Q3
Extremely it is connected, the source electrode of the grounded drain of the metal-oxide-semiconductor Q3, the metal-oxide-semiconductor Q3 is connected on the swing arm foot of the relay K1.
The relatively trigger circuit includes that capacitance C5 (capacitance C5 be energy storage filter capacitor), zener diode DZ2, operation are put
Big device U4, resistance R8, capacitance C7, resistance R9, resistance R10, triode Q4, resistance R13, resistance R12 and capacitance C6, the capacitance
The anode of C5 is connected between the diode D3 and the common end of diode D6, the cathode ground connection of the capacitance C5, described steady
The cathode of pressure diode DZ2 is connected between the diode D3 and the common end of diode D6, the zener diode DZ2's
Anode is connected in the noninverting input of the operational amplifier U4, and the reverse input end of the operational amplifier U4 is described in
Resistance R8 is connected on voltage VDD, and the power end ground connection of the operational amplifier U4, the operational amplifier U4's is another
A power end is connected on the common end between the diode D4 and diode D5, and the output end of the operational amplifier U4 connects
It is connected on the common end between the resistance R3 and resistance R5, the anode of the capacitance C7 is connected to the zener diode DZ2
On common end between operational amplifier U4, the cathode of the capacitance C7 is grounded, and one end of the resistance R9 is connected to described
On common end between zener diode DZ2 and operational amplifier U4, the other end of the resistance R9 is grounded, the resistance R10
One end be connected on the common end between the resistance R8 and operational amplifier U4, the other end of the resistance R10 is connected to
On the collector of the triode Q4, the emitter of the triode Q4 is grounded, and the base stage of the triode Q4 passes through the electricity
Resistance R13 is connected on the common end between the resistance R3 and resistance R5, one end ground connection of the resistance R12, the resistance R12
The other end be connected on the common end between the resistance R3 and resistance R5, the plus earth of the capacitance C6, the capacitance
The cathode of C6 is connected on the common end between the resistance R3 and resistance R5.
The accumulator includes the anode connection of capacitance C9, diode D12 and zener diode DZ3, the capacitance C9
On the cathode of the diode D4, the cathode ground connection of voltage VDD1, the capacitance C9, institute are provided on the anode of the capacitance C9
The anode for stating diode D12 is connected on the anode of the capacitance C9, the cathode of the diode and the zener diode DZ3
Cathode be connected, the zener diode DZ3 anode generate complete machine to switch power supply voltage VCC.
The Switching Power Supply is auto-excitation type RC oscillation switch power supplys, and the switching power circuit includes rectifier bridge U2, resistance
R1, resistance R2, resistance R4, capacitance C2, transformer T1, triode Q2, diode D7, capacitance C4, resistance R6, capacitance C3, voltage stabilizing
The input terminal company of isolation optocoupler O1, zener diode ZD1, resistance R7, diode D1 and diode D2, the rectifier bridge U2
It being connected on single firewire L, another input terminal of the rectifier bridge U2 is connected on the zero curve N to come through overload LED1 reflux,
The cathode output end of the rectifier bridge U2 passes sequentially through the collector of described resistance R1, R2 and R4 and the voltage stabilizing isolation optocoupler O1
It is connected, the anode of the capacitance C2 is connected on the common end between the resistance R1 and resistance R2, the cathode of the capacitance C2
It is connected on the cathode output end of the rectifier bridge U2, one end of the primary coil of the transformer T1 is connected to the resistance R1
On common end between resistance R2, the other end of the primary coil of the transformer T1 is connected to the current collection of the triode Q2
On extremely, the base stage of the triode Q2 is connected on the common end between the resistance R4 and voltage stabilizing isolation optocoupler O1, and described three
The emitter of pole pipe Q2 is connected on the cathode output end of the rectifier bridge U2, and the anode of the diode D7 is connected to described steady
On the emitter for pressing isolation optocoupler O1, the cathode of the diode D7 is connected to the one of the second subprime coil of the transformer T1
On end, the other end of the second subprime coil of the transformer T1 is connected on the cathode output end of the rectifier bridge U2, described
The anode of capacitance C4 is connected on the cathode output end of the rectifier bridge U2, the cathode of the capacitance C4 be connected to the voltage stabilizing every
On emitter from optocoupler O1, one end of the resistance R6 is connected on the cathode of the diode D7, and the resistance R6's is another
One end is connected with the cathode of the capacitance C3, and the anode of the capacitance C3 is connected in the base stage of the triode Q2, described steady
The anode of pressure diode ZD1 is connected on the anode of the voltage stabilizing isolation optocoupler O1, the cathode of the zener diode ZD1 and institute
The one end for stating resistance R7 is connected, the minus earth of the voltage stabilizing isolation optocoupler O1, the first secondary coil of the transformer T1
One end is connected on the anode of the diode D1, and the cathode of the diode D1 is connected with the anode of the capacitance C9, described
The other end of the first secondary coil of transformer T1 is grounded, the midpoint of the first secondary coil of the transformer T1 and two pole
The anode of pipe D2 is connected, and the cathode of the diode D2, which is connected and is generated with the other end of the resistance R7, gives switch complete machine power supply
Voltage VCC.
The normally open end of the relay K1 is connected on the zero curve N to come through overload LED1 reflux, the relay K1
Normal-closed end it is hanging, the driving input terminal of the relay K1 is connected on the anode of the capacitance C9, the relay K1's
Drive output is connected on the first output end of the Building C I U5, and an input terminal of the IC U5 is connected on voltage VDD,
Another input terminal of the IC U5 is connected to by resistance R11 on the anode of the capacitance C9, the drive of the relay K1
The dynamic anode that diode D8, the diode D8 are additionally provided between input terminal and drive output is connected to the relay K1's
Input terminal, the cathode of the diode D8 is driven to be connected in the drive output of the relay K1；The relay K2's
Swing arm foot is connected on single firewire L, and the normally open end of the relay K2 is connected to the zero curve N to come through overload LED2 reflux
On, the normal-closed end of the relay K2 is hanging, and the driving end of the relay K2 includes driving input terminal and drive output, institute
The driving input terminal for stating relay K2 is connected on the anode of the capacitance C9, and the drive output of the relay K2 is connected to
In the second output terminal of IC U5, it is additionally provided with diode D9 between the driving input terminal and drive output of the relay K2,
The anode of the diode D9 is connected to the driving input terminal of the relay K2, and the cathode of the diode D9 is connected to described
In the drive output of relay K2.
The voltage VDD is depressured to obtain by voltage VCC by reduction voltage circuit, and the reduction voltage circuit includes voltage-stablizer U6, electricity
The input terminal for holding C30, capacitance C1 and capacitance C10, the voltage-stablizer U6 is connected on the voltage VCC to switch complete machine power supply, institute
The ground terminal ground connection of voltage-stablizer U6 is stated, the cathode of the capacitance C30 is connected on the voltage VCC to switch complete machine power supply, described
The anode of the plus earth of capacitance C30, the capacitance C1 is connected on the input terminal of the voltage-stablizer U6, and the capacitance C1's is negative
Pole is grounded, and two output ends of the voltage-stablizer are grounded by the capacitance C10 and generate voltage between the capacitance C10
VDD。
A kind of operation principle of the present invention two roads list firewire switch is：
The present invention controls relay K1 using low and high level mode, and when relay K1 is off, single firewire L stops
Load LED1 power supplies, Simultaneous Switching power supply is only given to give switch complete machine power supply, be specifically：Single firewire L passes through rectifier bridge U2 rectifications
Power supply out passes through R1 resistance (current-limiting resistance), resistance R2 and resistance R4 (start-up resistor), capacitance C2 (filter capacitor), transformation
Device T1, triode Q2 (switching tube), diode D7, capacitance C4, resistance R6 and capacitance C3 (RC vibrates original paper), voltage stabilizing isolation optocoupler
O1, voltage-stabiliser tube ZD1, resistance R7, diode D2 and diode D1 form the self-excitation type RC oscillation switch power supply electricity of a low-power consumption
Switch complete machine power supply is given on road.
When relay, which is in, closes closed state, the metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3 generate arteries and veins after relay K1 closures
Punching press is dropped, and list firewire L and the alternating voltage of A points only have more than ten volts at this time, so the input terminal of Switching Power Supply is just without enough
Voltage, the output end VCC of Switching Power Supply stops output, replaces Switching Power Supply to give switch complete machine by metal-oxide-semiconductor power supply module at this time
Power supply.
When relay, which is in, closes closed state, single firewire L is by charging circuit to the comparison formed with operational amplifier U4
Trigger circuit provides trigger condition, compares trigger circuit output high level pulse, and triggering metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3 is operated in height
Speed conducting and cut-off state, two pole of charging time and voltage stabilizing of the frequency and time of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3 conducting by capacitance C5
The control of pipe ZD2.
The detailed process that metal-oxide-semiconductor power supply module replaces Switching Power Supply to provide supply voltage VCC to switch complete machine is：
When single firewire L is in positive half period, diode D3 conductings, diode D6 cut-offs, the electric current of single firewire L is by two poles
Pipe D3 charges to capacitance C5, and under the action of the comparison trigger circuit formed with operational amplifier U4, metal-oxide-semiconductor Q1 and metal-oxide-semiconductor
Q3 is operated in high speed conducting and cut-off state；At this point, the electric current of single firewire L passes through metal-oxide-semiconductor Q1 to metal-oxide-semiconductor Q3 using relay
K1 is exported gives load LED1 actings to the composition circuits zero curve N through overload LED1；The electric current of single firewire L by metal-oxide-semiconductor Q1 and
Metal-oxide-semiconductor Q3 generates alternating-current pulse pressure drop, under the action of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3 generate alternating-current pulse pressure drop, single firewire L's
Electric current also passes through diode D3, diode D5 and diode D4 and charges to capacitance C9 successively, and capacitance C9 also has the function of filtering,
Positive terminal of the electric energy in capacitance C9 after the filtering boosting of itself inside capacitance C9 generates voltage VDD1, and voltage VDD1 is through two
It is generated to the voltage VCC of switch complete machine power supply after pole pipe D12 and zener diode DZ3 processing.
When firewire L is in negative half-cycle, diode D3 cut-offs, diode D6 conductings, the electricity of the zero curve N through overload LED1
Stream charges by relay K1 and diode D6 to capacitance C5, and in the work of the comparison trigger circuit formed with operational amplifier U4
Under, metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q1 are operated in high speed conducting and cut-off state；At this point, the electric current of the zero curve N through overload LED1
It is exported using metal-oxide-semiconductor Q1 by relay K1 to metal-oxide-semiconductor Q3 and gives load LED1 actings to the composition circuits single firewire L；By negative
The electric current for carrying the zero curve N of LED1 generates alternating-current pulse pressure drop by metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q1, in metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q1 productions
Under the action of raw alternating-current pulse pressure drop, the electric current of the zero curve N through overload LED1 also pass through successively relay K1, diode D6,
Diode D5 and diode D4 charges to capacitance C9, and capacitance C9 also has the function of filtering, and the electric energy inside capacitance C9 passes through certainly
Positive terminal after the filtering boosting of body in capacitance C9 generates voltage VDD1, and voltage VDD1 is through diode D12 and zener diode DZ3
It is generated after processing to the voltage VCC of switch complete machine power supply.
The energy source that relay K2 is opened in driving is Switching Power Supply or metal-oxide-semiconductor power supply module；When relay K2 is disconnected,
It is open circuit between the zero curve and single firewire L that come through overload LED2 reflux, single firewire L stops giving load LED2 power supplies.When after
It is access between the zero curve and single firewire L that come through overload LED2 reflux, single firewire L is to load after electric appliance K2 starts closure
LED2 powers.
The disconnection of relay K2 does not influence Switching Power Supply or metal-oxide-semiconductor power supply module with startup closure and gives switch complete machine power supply,
The source of switch complete machine power supply is only influenced by relay K1.
Two road list firewire switch of one kind of the invention is whole to switching by relay switching Switching Power Supply and metal-oxide-semiconductor power supply module
Machine is powered, since MOS power supply module internal resistances are low, driving current is small, load current is big, calorific value is low and relay loads big anti-impact
The characteristics of hitting keeps state switching quick and convenient, it is possible to reduce the interference to power grid, while can use and not have opening for zero curve N
On off-position.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. two road list firewire switch of one kind, it is characterised in that：Including Switching Power Supply, metal-oxide-semiconductor power supply module, relay K1 and relay
The input terminal of device K2, the Switching Power Supply are connected on single firewire L, and the output end of the Switching Power Supply is by loading LED1 connections
On zero curve N, the input terminal of the metal-oxide-semiconductor power supply module is connected on single firewire L, the output end of the metal-oxide-semiconductor power supply module
It passes sequentially through the relay K1 and load LED1 is connected on zero curve N, the relay K2 is connected to single firewire L and load
Between LED2, and loads LED2 and be additionally attached on zero curve N；
The relay K1 is for controlling single firewire L to load LED1 power supplies or stopping power supply；
The relay K2 is for controlling single firewire L to load LED2 power supplies or stopping power supply；
The Switching Power Supply when the relay K1 is disconnected for making single firewire L through being formed between overload LED1 and zero curve N
Switch complete machine power supply is given in circuit；
The metal-oxide-semiconductor power supply module be used for when the relay K1 is closed generate pulse pressure drop replace the Switching Power Supply give opened
Close complete machine power supply.
2. a kind of two roads list firewire switch according to claim 1, it is characterised in that：The metal-oxide-semiconductor power supply module is in institute
Stating generation pulse pressure drop after relay K1 is closed makes the input voltage of the Switching Power Supply reduce, and the Switching Power Supply is because of input electricity
Pressure drop is low and stops generation for the voltage VCC to switch complete machine power supply, while metal-oxide-semiconductor power supply module generation is for being opened
Close the voltage VCC of complete machine power supply；The driving end of the relay K1 is connected to the voltage VCC that the metal-oxide-semiconductor power supply module generates
On；The driving end of the relay K2 is connected on the voltage VCC that the Switching Power Supply generates, the driving end of the relay K2
It is additionally attached on the voltage VCC that the metal-oxide-semiconductor power supply module generates.
3. a kind of two roads list firewire switch according to claim 2, it is characterised in that：The metal-oxide-semiconductor power supply module includes
Charging rectifier circuit compares trigger circuit, metal-oxide-semiconductor unit and accumulator, and the input terminal of the metal-oxide-semiconductor unit is connected to single fire
On line L, the output end of the metal-oxide-semiconductor unit is connected to by the relay K1 on the zero curve through overload LED1, described to fill
The first input end of electric rectification circuit is connected on single firewire L, and the second input terminal of the charging rectifier circuit is connected to described
On common end between metal-oxide-semiconductor unit and relay K1, the first output end of the charging rectifier circuit triggers compared with described
The input terminal of circuit connects, and the second output terminal of the charging rectifier circuit is connected with the input terminal of the accumulator, described
The output end for comparing trigger circuit is connected in the triggering end of the metal-oxide-semiconductor unit；
The charging rectifier circuit be used under the action of single firewire L power to it is described relatively trigger circuit provide trigger condition with
It charges to the accumulator；
The relatively trigger circuit is in running order for triggering the metal-oxide-semiconductor unit, and the relatively trigger circuit triggers
The in running order trigger condition of the metal-oxide-semiconductor unit is provided by the charging rectifier circuit；
The metal-oxide-semiconductor unit is for the conducting list firewire L when the relay K1 is closed and loads the supply access between LED1,
Generate alternating-current pulse pressure drop simultaneously；
The accumulator is used to provide voltage VDD1 under the action of metal-oxide-semiconductor unit generates alternating-current pulse pressure drop, and by voltage
VDD1 carries out processing and generates the voltage VCC for replacing the Switching Power Supply to switch complete machine power supply.
4. a kind of two roads list firewire switch according to claim 3, it is characterised in that：The charging rectifier circuit includes two
Pole pipe D3, diode D4, diode D5 and diode D6, the diode D3 anode be connected on single firewire L, two pole
The cathode of pipe D3 is connected with the cathode of the diode D6, and the anode of the diode D6 is connected to the swing arm of the relay K1
On foot, the anode of the diode D5 is connected to the common end of the diode D3 and diode D6, and the diode D5's is negative
Pole is connected with the anode of the diode D4, and the cathode of the diode D4 is connected on the accumulator.
5. a kind of two roads list firewire switch according to claim 4, it is characterised in that：The metal-oxide-semiconductor unit includes metal-oxide-semiconductor
The source electrode of Q1 and metal-oxide-semiconductor Q3, the metal-oxide-semiconductor Q1 are connected on single firewire L, the grounded drain of the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor
The grid of Q1 passes sequentially through resistance R3 and resistance R5 and is connected with the grid of the metal-oxide-semiconductor Q3, the grounded drain of the metal-oxide-semiconductor Q3,
The source electrode of the metal-oxide-semiconductor Q3 is connected on the swing arm foot of the relay K1.
6. a kind of two roads list firewire switch according to claim 5, it is characterised in that：The relatively trigger circuit includes electricity
Hold C5, zener diode DZ2, operational amplifier U4, resistance R8, capacitance C7, resistance R9, resistance R10, triode Q4, resistance
R13, resistance R12 and capacitance C6, the anode of the capacitance C5 is connected to the common end of the diode D3 and diode D6, described
The cathode of capacitance C5 is grounded, and the cathode of the zener diode DZ2 is connected to the common end of the diode D3 and diode D6,
The anode of the zener diode DZ2 is connected in the noninverting input of the operational amplifier U4, the operational amplifier U4
Reverse input end be connected on voltage VDD by the resistance R8, a power end of operational amplifier U4 ground connection, institute
Another power end for stating operational amplifier U4 is connected on the common end between the diode D4 and diode D5, the fortune
The output end for calculating amplifier U4 is connected on the common end between the resistance R3 and resistance R5, the anode connection of the capacitance C7
On common end between the zener diode DZ2 and operational amplifier U4, the cathode of the capacitance C7 is grounded, the resistance
One end of R9 is connected on the common end between the zener diode DZ2 and operational amplifier U4, and the resistance R9's is another
End ground connection, one end of the resistance R10 are connected on the common end between the resistance R8 and operational amplifier U4, the resistance
The other end of R10 is connected on the collector of the triode Q4, the emitter ground connection of the triode Q4, the triode Q4
Base stage be connected on the common end between the resistance R3 and resistance R5 by the resistance R13, one end of the resistance R12
Ground connection, the other end of the resistance R12 are connected on the common end between the resistance R3 and resistance R5, and the capacitance C6 is just
Pole is grounded, and the cathode of the capacitance C6 is connected on the common end between the resistance R3 and resistance R5.
7. a kind of two roads list firewire switch according to claim 6, it is characterised in that：The accumulator includes capacitance
The anode of C9, diode D12 and zener diode DZ3, the capacitance C9 are connected on the cathode of the diode D4, the electricity
Hold the cathode ground connection that voltage VDD1, the capacitance C9 are provided on the anode of C9, the anode of the diode D12 is connected to the electricity
On the anode for holding C9, the cathode of the diode is connected with the cathode of the zener diode DZ3, the zener diode DZ3
Anode generate complete machine to switch power supply voltage VCC.
8. a kind of two roads list firewire switch according to claim 7, it is characterised in that：The Switching Power Supply is auto-excitation type RC
Oscillation switch power supply, the switching power circuit include rectifier bridge U2, resistance R1, resistance R2, resistance R4, capacitance C2, transformer
T1, triode Q2, diode D7, capacitance C4, resistance R6, capacitance C3, voltage stabilizing isolation optocoupler O1, zener diode ZD1, resistance
An input terminal of R7, diode D1 and diode D2, the rectifier bridge U2 are connected on single firewire L, the rectifier bridge U2's
Another input terminal is connected to by loading LED1 on zero curve N, and the cathode output end of the rectifier bridge U2 passes sequentially through the electricity
Resistance R1, R2 and R4 are connected with the collector of the voltage stabilizing isolation optocoupler O1, and the anode of the capacitance C2 is connected to the resistance R1
On common end between resistance R2, the cathode of the capacitance C2 is connected on the cathode output end of the rectifier bridge U2, described
One end of the primary coil of transformer T1 is connected on the common end between the resistance R1 and resistance R2, the transformer T1's
The other end of primary coil is connected on the collector of the triode Q2, and the base stage of the triode Q2 is connected to the resistance
On common end between R4 and voltage stabilizing isolation optocoupler O1, the emitter of the triode Q2 is connected to the cathode of the rectifier bridge U2
On output end, the anode of the diode D7 is connected on the emitter of the voltage stabilizing isolation optocoupler O1, the diode D7's
Cathode is connected on one end of the second subprime coil of the transformer T1, the second subprime coil of the transformer T1 it is another
End is connected on the cathode output end of the rectifier bridge U2, and the cathode that the anode of the capacitance C4 is connected to the rectifier bridge U2 is defeated
In outlet, the cathode of the capacitance C4 is connected on the emitter of the voltage stabilizing isolation optocoupler O1, and one end of the resistance R6 connects
It is connected on the cathode of the diode D7, the other end of the resistance R6 is connected with the cathode of the capacitance C3, the capacitance C3
Anode be connected in the base stage of the triode Q2, the anode of the zener diode ZD1 is connected to the voltage stabilizing isolation light
On the anode of coupling O1, the cathode of the zener diode ZD1 is connected with one end of the resistance R7, the voltage stabilizing isolation optocoupler O1
Minus earth, one end of the first secondary coil of the transformer T1 is connected on the anode of the diode D1, described two
The cathode of pole pipe D1 is connected with the anode of the capacitance C9, the other end ground connection of the first secondary coil of the transformer T1, institute
The midpoint for stating the first secondary coil of transformer T1 is connected with the anode of the diode D2, the cathode of the diode D2 and institute
The other end for stating resistance R7 is connected and generates to the voltage VCC of switch complete machine power supply.
9. a kind of two roads list firewire switch according to claim 8, it is characterised in that：The normally open end of the relay K1 is logical
Overload LED1 is connected on zero curve N, and the normal-closed end of the relay K1 is hanging, the driving input terminal connection of the relay K1
On the anode of the capacitance C9, the drive output of the relay K1 is connected on the first output end of IC U5, described
An input terminal of IC U5 is connected on voltage VDD, and another input terminal of the IC U5 is connected to institute by resistance R11
On the anode for stating capacitance C9, diode D8 is additionally provided between the driving input terminal and drive output of the relay K1, it is described
The anode of diode D8 is connected to the driving input terminal of the relay K1, and the cathode of the diode D8 is connected to the relay
In the drive output of device K1；
The swing arm foot of the relay K2 is connected on single firewire L, and the normally open end of the relay K2 is by loading LED2 connections
On zero curve N, the normal-closed end of the relay K2 is hanging, and the driving end of the relay K2 includes driving input terminal and drives defeated
The driving input terminal of outlet, the relay K2 is connected on the anode of the capacitance C9, the driving output of the relay K2
End is connected in the second output terminal of IC U5, and two are additionally provided between the driving input terminal and drive output of the relay K2
Pole pipe D9, the anode of the diode D9 are connected to the driving input terminal of the relay K2, and the cathode of the diode D9 connects
It is connected in the drive output of the relay K2.
10. according to two road list firewire switch of claim 6 to 9 any one of them one kind, it is characterised in that：The voltage VDD
It is depressured to obtain by reduction voltage circuit by voltage VCC, the reduction voltage circuit includes voltage-stablizer U6, capacitance C30, capacitance C1 and capacitance
The input terminal of C10, the voltage-stablizer U6 are connected on the voltage VCC to switch complete machine power supply, the ground terminal of the voltage-stablizer U6
The cathode of ground connection, the capacitance C30 is connected on the voltage VCC to switch complete machine power supply, the plus earth of the capacitance C30,
The anode of the capacitance C1 is connected on the input terminal of the voltage-stablizer U6, the cathode ground connection of the capacitance C1, the voltage-stablizer
Two output ends be grounded by the capacitance C10 and generate voltage VDD between the capacitance C10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611007481.4A CN106658826B (en) | 2016-11-16 | 2016-11-16 | Two road list firewire switch of one kind |
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| CN201611007481.4A CN106658826B (en) | 2016-11-16 | 2016-11-16 | Two road list firewire switch of one kind |
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| CN106658826B true CN106658826B (en) | 2018-07-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111491423B (en) * | 2020-03-27 | 2022-07-05 | 普联技术有限公司 | Single-fire switch circuit and single-fire switch device |
| CN112039513B (en) * | 2020-09-11 | 2023-12-05 | 金枫林电器（无锡）有限公司 | Safety isolation circuit of key switch |
| CN117641642B (en) * | 2024-01-26 | 2024-05-17 | 江西众一信息产业股份有限公司 | Single fire intelligent lighting switch circuit |
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