CN202931272U - Electronic device and signal one-out-of-two circuit thereof - Google Patents
Electronic device and signal one-out-of-two circuit thereof Download PDFInfo
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- CN202931272U CN202931272U CN201220561908.6U CN201220561908U CN202931272U CN 202931272 U CN202931272 U CN 202931272U CN 201220561908 U CN201220561908 U CN 201220561908U CN 202931272 U CN202931272 U CN 202931272U
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Abstract
The utility model discloses an electronic device and a signal one-out-of-two circuit thereof. The signal one-out-of-two circuit comprises a first signal input end, a second signal input end, a signal output end, a level signal input end and a discrete component module. The discrete component module is connected with the first signal input end to receive first signal input, and is connected with the second signal input end to receive second signal input. The discrete component module controls the signal output end which is connected with the discrete component module to select and output a first signal or a second signal through a level signal which is input by the level signal input end which is connected with the discrete component module. According to the utility model, the signal one-out-of-two circuit uses common resistor, triode or MOS tube and other common discrete components, and has the advantages of simple circuit principle, easy implementation and low cost; at the same time, discrete components do not need model selection, which avoids adverse effects on the circuit, which are caused by wrong model selection; and the signal one-out-of-two circuit is suitable for devices of different types of signals, and has the advantages of simple and convenient circuit and strong versatility.
Description
Technical field
The utility model relates to a kind of electronic technology field, particularly a kind of electronic equipment and signal alternative circuit thereof.
Background technology
At present, in most of consumer electronics products, comprise two or more signal input sources but a signal output terminal is only arranged on market, can only select one road signal to export from multiple signals.For example, the above composite video signal CVBS input source of two-way is arranged in consumer electronics product, but only has a CVBS lead-out terminal, the pattern of multichannel CVBS input, single channel CVBS output will be the trend of consumer electronics product, usually the function selected of the multichannel CVBS that realizes with integrated circuit (IC) of these products.Traditional use IC realizes the mode of signal alternative circuit, and cost is higher, and the bandwidth of the selection of this type signal on market IC is different with speed, causes type selecting complicated, has risk.
The utility model content
A kind of circuit is simple and convenient in order to provide for main purpose of the present utility model, easy realization, highly versatile and the low signal alternative circuit of cost and comprise the electronic equipment of this circuit.
The utility model proposes a kind of signal alternative circuit, comprise first signal input, secondary signal input, signal output part and level signal input, also comprise the discrete component module, described discrete component module comprises the first switch element, second switch element, the 3rd switch element and the 4th switch element, wherein:
The first end of described the first switch element connects described first signal input, receives the first signal input, and the second end connects described signal output part, and the 3rd end connects the first end of described the 3rd switch element; The first end of described second switch element connects described secondary signal input, receives the secondary signal input, and the second end connects described signal output part, and the 3rd end connects respectively the 3rd end of described the 3rd switch element and the first end of described the 4th switch element; The first end of described the 3rd switch element connects power supply, the second end ground connection with the 3rd end; The 3rd end of described the 4th switch element connects described level signal input, the second end ground connection; Described discrete component module is controlled described signal output part and is selected the described first signal of output or secondary signal according to the level signal of described level signal input input.
Preferably, described the first switch element, second switch element, the 3rd switch element and the 4th switch element are respectively the first triode, the second triode, the 3rd triode and the 4th triode, the collector electrode of described the first triode is connected with described first signal input, base stage is connected with the collector electrode of described the 3rd triode, and emitter connects described signal output part; The collector electrode of described the second triode connects described secondary signal input, and emitter connects described signal output part, and base stage connects respectively the base stage of described the 3rd triode and the collector electrode of described the 4th triode; The collector electrode of described the 3rd triode is connected described power supply, grounded emitter with base stage; The base stage of described the 4th triode connects described level signal input, grounded emitter.
preferably, described discrete component module also comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance and the 5th resistance, the base stage of described the first triode is connected with the collector electrode of described the 3rd triode through described the first resistance, the base stage of described the second triode is connected with the base stage of the 3rd resistance with the 3rd triode through described the second resistance, the collector electrode of described the 3rd triode is connected with described power supply through described the 4th resistance, the base stage of described the 3rd triode is connected with described power supply with the 5th resistance through described the 3rd resistance, the collector electrode of described the 4th triode is connected with the base stage of described the second triode through described the second resistance.
Preferably, described the first triode, the second triode, the 3rd triode and the 4th triode are NPN type triode.
Preferably, described the first switch element, second switch element, the 3rd switch element and the 4th switch element are respectively the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, the drain electrode of described the first metal-oxide-semiconductor is connected with described first signal input, grid is connected with the drain electrode of described the 3rd metal-oxide-semiconductor, and source electrode connects described signal output part; The drain electrode of described the second metal-oxide-semiconductor connects described secondary signal input, and source electrode connects described signal output part, and grid connects respectively the drain electrode of grid and described the 4th metal-oxide-semiconductor of described the 3rd metal-oxide-semiconductor; The drain and gate of described the 3rd metal-oxide-semiconductor connects described power supply, source ground; The grid of described the 4th metal-oxide-semiconductor connects described level signal input, source ground.
preferably, described discrete component module also comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance and the 5th resistance, the grid of described the first metal-oxide-semiconductor is connected with the drain electrode of described the 3rd metal-oxide-semiconductor through described the first resistance, the grid of described the second metal-oxide-semiconductor is connected with the grid of the 3rd resistance with the 3rd metal-oxide-semiconductor through described the second resistance, the drain electrode of described the 3rd metal-oxide-semiconductor is connected with described power supply through described the 4th resistance, the grid of described the 3rd metal-oxide-semiconductor is connected with described power supply with the 5th resistance through described the 3rd resistance, the drain electrode of described the 4th metal-oxide-semiconductor is connected with the grid of described the second metal-oxide-semiconductor through described the second resistance.
Preferably, described the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor are the NMOS pipe.
Preferably, also comprise the 6th resistance, the 7th resistance and the 8th resistance, the first end of described the first switch element is also through described the 6th grounding through resistance, described second switch element first end also through described the 7th grounding through resistance, the 3rd end of described the 4th switch element is connected with described level signal input through described the 8th resistance.
Preferably, also comprise the first inductance and the first electric capacity, the first end of described the 3rd switch element through described the 4th resistance be connected inductance and be connected with described power supply, the 3rd end of described the 3rd switch element is connected with described power supply through described the 3rd resistance, the 5th resistance and the inductance of being connected, and described power supply is also through described the first inductance and the first capacity earth.
The utility model also proposes a kind of electronic equipment, comprise signal alternative circuit, described signal alternative circuit comprises first signal input, secondary signal input, signal output part and level signal input, described signal alternative circuit also comprises the discrete component module, described discrete component module comprises the first switch element, second switch element, the 3rd switch element and the 4th switch element, wherein:
The first end of described the first switch element connects described first signal input, receives the first signal input, and the second end connects described signal output part, and the 3rd end connects the first end of described the 3rd switch element; The first end of described second switch element connects described secondary signal input, receives the secondary signal input, and the second end connects described signal output part, and the 3rd end connects respectively the 3rd end of described the 3rd switch element and the first end of described the 4th switch element; The first end of described the 3rd switch element connects power supply, the second end ground connection with the 3rd end; The 3rd end of described the 4th switch element connects described level signal input, the second end ground connection; Described discrete component module is controlled described signal output part and is selected the described first signal of output or secondary signal according to the level signal of level signal input input.
The utility model signal alternative circuit is not selected integrated circuit (IC) in circuit element, employing be all the common common discrete components such as resistance, triode or metal-oxide-semiconductor, circuit theory is simple, more easily realize and cost low; Simultaneously, signal alternative circuit with respect to the available technology adopting integrated circuit (IC) need to be selected different model IC for different signals, the utility model signal alternative circuit, discrete component does not need type selecting, avoided due to type selecting not to and harmful effect that circuit is caused, applicable to the equipment of signal with different type, circuit is simple and convenient, highly versatile.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model signal alternative circuit one embodiment;
Fig. 2 is the electrical block diagram of another embodiment of the utility model signal alternative circuit;
Fig. 3 is the electrical block diagram of the another embodiment of the utility model signal alternative circuit.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 1, Fig. 1 is the electrical block diagram of the utility model signal alternative circuit one embodiment, the signal alternative circuit that this embodiment proposes, comprise first signal input 100, secondary signal input 200, signal output part 300 and level signal input 400, also comprise discrete component module 500, discrete component module 500 comprises the first switch element S1, second switch element S2, the 3rd switch element S3 and the 4th switch element S4, wherein:
The first end 1 of the first switch element S1 connects first signal input 100, receives the first signal input, and the second end 2 connects the first end 7 that signal output part 300, the three ends 3 connect the 3rd switch element S3; The first end 4 of second switch element S2 connects secondary signal input 200, receives the secondary signal input, and the second end 5 connects signal output part 300, the three ends 6 and connects respectively the 3rd end 9 of the 3rd switch element S3 and the first end 10 of the 4th switch element S4; The first end 7 of the 3rd switch element S3 connects power supply VCC, the second end 8 ground connection with the 3rd end 9; The 3rd end 12 of the 4th switch element S4 connects level signal input 400, the second end 11 ground connection; Discrete component module 500 comes control signal output 300 to select output first signal or secondary signal according to the level signal of level signal input 400 inputs.
Concrete, the present embodiment is controlled the operating state of the 4th switch element S4 by level signal input 400 incoming level signal to the four switch element S4, and then controls conducting or the disconnection of second switch element S2 and the 3rd switch element S3.
When second switch element S2 conducting, the secondary signal arriving signal output 300 that second switch element S2 receives, signal output part 300 output secondary signals; Simultaneously the state of the 3rd switch element S3 is being controlled the first switch element S1 and is disconnected, and the first signal that the first switch element S1 receives can not arriving signal output 300, and signal output part 300 is not exported first signal.When second switch element S2 disconnected, the secondary signal that second switch element S2 receives can not arriving signal output 300, and signal output part 300 is not exported secondary signal; The state of the 3rd switch element S3 is being controlled the first switch element S1 conducting simultaneously, the first signal arriving signal output 300 that the first switch element S1 receives, signal output part 300 output first signals.
The signal alternative circuit that the present embodiment proposes adopts level signal to control conducting or the disconnection of discrete component, realizes that principle is simple to the selection of signal output, is easy to realize; It all adopts discrete component than prior art, does not have the Component selection problem, be applicable to the selection of multi-signal, and cost is lower.
The signal alternative circuit of the present embodiment, also comprise the 6th resistance R 6, the 7th resistance R 7 and the 8th resistance R 8, the first end 1 of the first switch element S1 is also through the 6th resistance R 6 ground connection, second switch element S2 first end 4 also through the 7th resistance R 7 ground connection, the 3rd end 12 of the 4th switch element S4 is connected with level signal input 400 through the 8th resistance R 8.The 6th resistance R 6 and the 7th resistance R 7 are respectively the build-out resistor of the first switch element S1 and second switch element S2, and the 8th resistance R 8 is the current-limiting resistance of the 3rd end 12 of the 4th switch element S4.
As shown in Figure 2, Fig. 2 is the electrical block diagram of another embodiment of the utility model signal alternative circuit, in the present embodiment, the first switch element, second switch element, the 3rd switch element and the 4th switch element are respectively the first triode Q1, the second triode Q2, the 3rd triode Q3 and the 4th triode Q4, the collector electrode of the first triode Q1 is connected with first signal input 100, base stage is connected with the collector electrode of the 3rd triode Q3, and emitter connects signal output part 300; The collector electrode of the second triode Q2 connects secondary signal input 200, and emitter connects signal output part 300, and base stage connects respectively the base stage of the 3rd triode Q3 and the collector electrode of the 4th triode Q4; The collector electrode of the 3rd triode Q3 is connected power supply VCC, grounded emitter with base stage; The base stage of the 4th triode Q4 connects level signal input 400, grounded emitter.The first triode Q1, the second triode Q2, the 3rd triode Q3 and the 4th triode Q4 are NPN type triode.discrete component module 500 also comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4 and the 5th resistance R 5, the base stage of the first triode Q1 is connected with the collector electrode of the 3rd triode Q3 through the first resistance R 1, the base stage of the second triode Q2 is connected with the base stage of the 3rd triode Q3 with the 3rd resistance R 3 through the second resistance R 2, the collector electrode of the 3rd triode Q3 is connected with power supply VCC through the 4th resistance R 4, the base stage of the 3rd triode Q3 is connected with power supply VCC with the 5th resistance R 5 through the 3rd resistance R 3, the collector electrode of the 4th triode Q4 is connected with the base stage of the second triode Q2 through the second resistance R 2.
The present embodiment signal alternative circuit also comprises the first inductance L and the first capacitor C, the collector electrode of the 3rd triode Q3 through the 4th resistance R 4 be connected inductance L and be connected with power supply VCC, the base stage of the 3rd triode Q3 is connected with power supply VCC through the 3rd resistance R 3, the 5th resistance R 5 and the inductance L of being connected, and power supply VCC is also through the first inductance L and the first capacitor C ground connection.The first inductance L is for guaranteeing the Electro Magnetic Compatibility of circuit herein, and the first capacitor C is made power filter.
The operation principle of the present embodiment signal alternative circuit specifically describes as follows:
(1) when the base stage of level signal input input high level to the four triode Q4, the base stage of the 4th triode Q4 and the voltage between emitter are greater than cut-in voltage, the 4th triode Q4 conducting, its collector electrode and emitter are equivalent to short circuit, grounded emitter again is low level so its current collection very is equivalent to ground connection, the base stage of the base stage of the second triode Q2 and the 3rd triode Q3 is connected with the collector electrode of the 4th triode Q4, so the base stage of the base stage of the second triode Q2 and the 3rd triode Q3 is all low level, the base stage of the second triode Q2 and the voltage between emitter are less than cut-in voltage, the second not conducting of triode Q2, collector electrode and the emitter of the second triode Q2 are obstructed, the secondary signal that its collector electrode receives does not arrive emitter, namely do not arrive signal output part 300, signal output part 300 is not exported secondary signal, equally, the base stage of the 3rd triode Q3 and the voltage between emitter are less than cut-in voltage, the 3rd not conducting of triode Q3, its collector electrode is without its grounded emitter, it is high level that its collector electrode connects power supply VCC, the base stage of the first triode Q1 is connected with the 3rd triode Q3 collector electrode also and is high level, the base stage of the first triode Q1 and the voltage between emitter are greater than cut-in voltage, the first triode Q1 conducting, the collector and emitter conducting of the first triode Q1, the first signal that the collector electrode of the first triode Q1 receives is exported to signal output part 300 through emitter.
(2) when the base stage of level signal input 400 input low level to the four triode Q4, voltage between the 4th triode Q4 base stage and emitter is less than cut-in voltage, the 4th not conducting of triode Q4, the branch road that the base stage of the base stage of the second triode Q2 and the 3rd triode Q3 is connected with the collector electrode of the 4th triode Q4 is equivalent to open circuit, and it is high level that the base stage of the base stage of the second triode Q2 and the 3rd triode Q3 also connects power supply VCC; The base stage of the second triode Q2 and the voltage between emitter is greater than cut-in voltage, the second triode Q2 conducting, and the secondary signal that its collector electrode receives is exported through its emitter arriving signal output 300; The base stage of the 3rd triode Q3 and the voltage between emitter are greater than cut-in voltage simultaneously, the 3rd triode Q3 conducting, it is low level that its collector electrode is equivalent to ground connection, the base stage of the first triode Q1 that is connected with its collector electrode also is low level, so the first not conducting of triode Q1, the first signal that the collector electrode of the first triode Q1 receives can not arriving signal output 300, and signal output part 300 is not exported first signal.
As shown in Figure 3, Fig. 3 is the electrical block diagram of the another embodiment of the utility model signal alternative circuit, in the present embodiment, the first switch element, second switch element, the 3rd switch element and the 4th switch element are respectively the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4, the drain electrode of the first metal-oxide-semiconductor Q1 is connected with first signal input 100, grid is connected with the drain electrode of the 3rd metal-oxide-semiconductor Q3, and source electrode connects signal output part 300; The drain electrode of the second metal-oxide-semiconductor Q2 connects secondary signal input 200, and source electrode connects signal output part 300, and grid connects respectively the Q4 drain electrode of grid and the 4th metal-oxide-semiconductor of the 3rd metal-oxide-semiconductor Q3; The drain and gate of the 3rd metal-oxide-semiconductor Q3 connects power supply VCC, source ground; The grid of the 4th metal-oxide-semiconductor Q4 connects level signal input 400, source ground.discrete component module 500 also comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4 and the 5th resistance R 5, the grid of the first metal-oxide-semiconductor Q1 is connected with the drain electrode of the 3rd metal-oxide-semiconductor Q3 through the first resistance R 1, the grid of the second metal-oxide-semiconductor Q2 is connected with the grid of the 3rd metal-oxide-semiconductor Q3 with the 3rd resistance R 3 through the second resistance R 2, the drain electrode of the 3rd metal-oxide-semiconductor Q3 is connected with power supply VCC through the 4th resistance R 4, the grid of the 3rd metal-oxide-semiconductor Q3 is connected with power supply VCC with the 5th resistance R 5 through the 3rd resistance R 3, the drain electrode of the 4th metal-oxide-semiconductor Q4 is connected with the grid of the second metal-oxide-semiconductor Q2 through the second resistance R 2.The first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4 are the NMOS pipe.
The present embodiment signal alternative circuit also comprises the first inductance L and the first capacitor C, the drain electrode of the 3rd metal-oxide-semiconductor Q3 through the 4th resistance R 4 be connected inductance L and be connected with power supply VCC, the grid of the 3rd metal-oxide-semiconductor Q3 is connected with power supply VCC through the 3rd resistance R 3, the 5th resistance R 5 and the inductance L of being connected, and power supply VCC is also through the first inductance L and the first capacitor C ground connection.The first inductance L is for guaranteeing the Electro Magnetic Compatibility of circuit herein, and the first capacitor C is made power filter.
The operation principle of the present embodiment signal alternative circuit specifically describes as follows:
(1) when the grid of level signal input input high level to the four metal-oxide-semiconductor Q4, the grid of the 4th metal-oxide-semiconductor Q4 and the voltage between source electrode are greater than cut-in voltage, the 4th metal-oxide-semiconductor Q4 conducting, its drain electrode is equivalent to short circuit with source electrode, source ground again is so its drain electrode is low level for being equivalent to ground connection; The grid of the grid of the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3 is connected with the drain electrode of the 4th metal-oxide-semiconductor Q4, so the grid of the grid of the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3 is all low level; The grid of the second metal-oxide-semiconductor Q2 and the voltage between source electrode are less than cut-in voltage, the second not conducting of metal-oxide-semiconductor Q2, drain electrode and the source electrode of the second metal-oxide-semiconductor Q2 are obstructed, and the secondary signal that its drain electrode receives does not arrive source electrode, namely do not arrive signal output part 300, signal output part 300 is not exported secondary signal; Equally, the grid of the 3rd metal-oxide-semiconductor Q3 and the voltage between source electrode are less than cut-in voltage, the 3rd not conducting of metal-oxide-semiconductor Q3, its drain electrode is without its source ground, it is high level that its drain electrode connects power supply VCC, the grid of the first metal-oxide-semiconductor Q1 drains to be connected with the 3rd metal-oxide-semiconductor Q3 and also is high level, the grid of the first metal-oxide-semiconductor Q1 and the voltage between source electrode are greater than cut-in voltage, the first metal-oxide-semiconductor Q1 conducting, the drain electrode of the first metal-oxide-semiconductor Q1 and source electrode conducting, the first signal that the drain electrode of the first metal-oxide-semiconductor Q1 receives is exported to signal output part 300 through source electrode.
(2) when the grid of level signal input 400 input low level to the four metal-oxide-semiconductor Q4, voltage between the 4th metal-oxide-semiconductor Q4 grid and source electrode is less than cut-in voltage, the 4th not conducting of metal-oxide-semiconductor Q4, the branch road that the grid of the grid of the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3 is connected with the drain electrode of the 4th metal-oxide-semiconductor Q4 is equivalent to open circuit, and it is high level that the grid of the grid of the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3 also connects power supply VCC; The grid of the second metal-oxide-semiconductor Q2 and the voltage between source electrode is greater than cut-in voltage, the second metal-oxide-semiconductor Q2 conducting, and the secondary signal that its drain electrode receives is exported through its source electrode arriving signal output 300; The grid of the 3rd metal-oxide-semiconductor Q3 and the voltage between source electrode are greater than cut-in voltage simultaneously, the 3rd metal-oxide-semiconductor Q3 conducting, it is low level that its drain electrode is equivalent to ground connection, the grid of the first metal-oxide-semiconductor Q1 that is connected with its drain electrode also is low level, so the first not conducting of metal-oxide-semiconductor Q1, the first signal that the drain electrode of the first metal-oxide-semiconductor Q1 receives can not arriving signal output 300, and signal output part 300 is not exported first signal.
The utility model signal alternative circuit the first switch element, second switch element, the 3rd switch element and the 4th switch element can also be other discrete components, and the utility model only is elaborated as an example of NPN type triode and NMOS pipe example.
The utility model signal alternative circuit, employing be all the common common discrete components such as resistance, triode or metal-oxide-semiconductor, circuit theory is simple, easily realize and cost low; Simultaneously, signal alternative circuit with respect to the available technology adopting integrated circuit (IC) need to be selected different model IC for different signals, the utility model signal alternative circuit, do not need type selecting, circuit is simple and convenient, highly versatile, also avoided due to type selecting not to and harmful effect that circuit is caused.
The utility model also proposes a kind of electronic equipment, comprises signal alternative circuit, and the circuit structure of its signal alternative circuit is identical with the circuit structure of the described signal alternative of top embodiment circuit, does not do at this and gives unnecessary details.
The above is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (10)
1. signal alternative circuit, comprise first signal input, secondary signal input, signal output part and level signal input, it is characterized in that, also comprise the discrete component module, described discrete component module comprises the first switch element, second switch element, the 3rd switch element and the 4th switch element, wherein:
The first end of described the first switch element connects described first signal input, receives the first signal input, and the second end connects described signal output part, and the 3rd end connects the first end of described the 3rd switch element; The first end of described second switch element connects described secondary signal input, receives the secondary signal input, and the second end connects described signal output part, and the 3rd end connects respectively the 3rd end of described the 3rd switch element and the first end of described the 4th switch element; The first end of described the 3rd switch element connects power supply, the second end ground connection with the 3rd end; The 3rd end of described the 4th switch element connects described level signal input, the second end ground connection; Described discrete component module is controlled described signal output part and is selected the described first signal of output or secondary signal according to the level signal of described level signal input input.
2. signal alternative circuit according to claim 1, it is characterized in that, described the first switch element, second switch element, the 3rd switch element and the 4th switch element are respectively the first triode, the second triode, the 3rd triode and the 4th triode, the collector electrode of described the first triode is connected with described first signal input, base stage is connected with the collector electrode of described the 3rd triode, and emitter connects described signal output part; The collector electrode of described the second triode connects described secondary signal input, and emitter connects described signal output part, and base stage connects respectively the base stage of described the 3rd triode and the collector electrode of described the 4th triode; The collector electrode of described the 3rd triode is connected described power supply, grounded emitter with base stage; The base stage of described the 4th triode connects described level signal input, grounded emitter.
3. signal alternative circuit according to claim 2, it is characterized in that, described discrete component module also comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance and the 5th resistance, the base stage of described the first triode is connected with the collector electrode of described the 3rd triode through described the first resistance, the base stage of described the second triode is connected with the base stage of the 3rd resistance with the 3rd triode through described the second resistance, the collector electrode of described the 3rd triode is connected with described power supply through described the 4th resistance, the base stage of described the 3rd triode is connected with described power supply with the 5th resistance through described the 3rd resistance, the collector electrode of described the 4th triode is connected with the base stage of described the second triode through described the second resistance.
4. the described signal alternative of any one circuit according to claim 2 or 3, is characterized in that, described the first triode, the second triode, the 3rd triode and the 4th triode are NPN type triode.
5. signal alternative circuit according to claim 1, it is characterized in that, described the first switch element, second switch element, the 3rd switch element and the 4th switch element are respectively the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, the drain electrode of described the first metal-oxide-semiconductor is connected with described first signal input, grid is connected with the drain electrode of described the 3rd metal-oxide-semiconductor, and source electrode connects described signal output part; The drain electrode of described the second metal-oxide-semiconductor connects described secondary signal input, and source electrode connects described signal output part, and grid connects respectively the drain electrode of grid and described the 4th metal-oxide-semiconductor of described the 3rd metal-oxide-semiconductor; The drain and gate of described the 3rd metal-oxide-semiconductor connects described power supply, source ground; The grid of described the 4th metal-oxide-semiconductor connects described level signal input, source ground.
6. signal alternative circuit according to claim 5, it is characterized in that, described discrete component module also comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance and the 5th resistance, the grid of described the first metal-oxide-semiconductor is connected with the drain electrode of described the 3rd metal-oxide-semiconductor through described the first resistance, the grid of described the second metal-oxide-semiconductor is connected with the grid of the 3rd resistance with the 3rd metal-oxide-semiconductor through described the second resistance, the drain electrode of described the 3rd metal-oxide-semiconductor is connected with described power supply through described the 4th resistance, the grid of described the 3rd metal-oxide-semiconductor is connected with described power supply with the 5th resistance through described the 3rd resistance, the drain electrode of described the 4th metal-oxide-semiconductor is connected with the grid of described the second metal-oxide-semiconductor through described the second resistance.
7. the described signal alternative of any one circuit according to claim 5 or 6, is characterized in that, described the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor are the NMOS pipe.
8. signal alternative circuit according to claim 1, it is characterized in that, also comprise the 6th resistance, the 7th resistance and the 8th resistance, the first end of described the first switch element is also through described the 6th grounding through resistance, described second switch element first end also through described the 7th grounding through resistance, the 3rd end of described the 4th switch element is connected with described level signal input through described the 8th resistance.
9. the described signal alternative of any one circuit according to claim 3 or 6, it is characterized in that, also comprise the first inductance and the first electric capacity, the first end of described the 3rd switch element through described the 4th resistance be connected inductance and be connected with described power supply, the 3rd end of described the 3rd switch element is connected with described power supply through described the 3rd resistance, the 5th resistance and the inductance of being connected, and described power supply is also through described the first inductance and the first capacity earth.
10. an electronic equipment, is characterized in that, comprises signal alternative circuit as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220561908.6U CN202931272U (en) | 2012-10-29 | 2012-10-29 | Electronic device and signal one-out-of-two circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220561908.6U CN202931272U (en) | 2012-10-29 | 2012-10-29 | Electronic device and signal one-out-of-two circuit thereof |
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| CN202931272U true CN202931272U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220561908.6U Expired - Fee Related CN202931272U (en) | 2012-10-29 | 2012-10-29 | Electronic device and signal one-out-of-two circuit thereof |
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| CN (1) | CN202931272U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485936A (en) * | 2014-12-31 | 2015-04-01 | 东北大学 | High-temperature either-or switch circuit |
| CN107707248A (en) * | 2017-11-01 | 2018-02-16 | 成都声立德克技术有限公司 | Same OR circuit, adjusting method and NOR gate circuit |
| CN109217847A (en) * | 2018-11-13 | 2019-01-15 | 东莞钜威动力技术有限公司 | A kind of digital output circuit and automobile |
| CN111294035A (en) * | 2020-01-22 | 2020-06-16 | 无锡艾为集成电路技术有限公司 | Level selection circuit, level selection method, chip and electronic equipment |
-
2012
- 2012-10-29 CN CN201220561908.6U patent/CN202931272U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485936A (en) * | 2014-12-31 | 2015-04-01 | 东北大学 | High-temperature either-or switch circuit |
| CN104485936B (en) * | 2014-12-31 | 2018-01-02 | 东北大学 | A kind of high temperature either-or switch circuit |
| CN107707248A (en) * | 2017-11-01 | 2018-02-16 | 成都声立德克技术有限公司 | Same OR circuit, adjusting method and NOR gate circuit |
| CN107707248B (en) * | 2017-11-01 | 2024-01-26 | 成都声立德克技术有限公司 | exclusive-OR gate circuit, adjusting method and exclusive-OR gate circuit |
| CN109217847A (en) * | 2018-11-13 | 2019-01-15 | 东莞钜威动力技术有限公司 | A kind of digital output circuit and automobile |
| CN111294035A (en) * | 2020-01-22 | 2020-06-16 | 无锡艾为集成电路技术有限公司 | Level selection circuit, level selection method, chip and electronic equipment |
| CN111294035B (en) * | 2020-01-22 | 2023-04-18 | 无锡艾为集成电路技术有限公司 | Level selection circuit, level selection method, chip and electronic equipment |
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