CN211830733U - Two-state display switching circuit - Google Patents
Two-state display switching circuit Download PDFInfo
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- CN211830733U CN211830733U CN202020822024.6U CN202020822024U CN211830733U CN 211830733 U CN211830733 U CN 211830733U CN 202020822024 U CN202020822024 U CN 202020822024U CN 211830733 U CN211830733 U CN 211830733U
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- indicating device
- state indicating
- current limiting
- state
- limiting resistor
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Abstract
The utility model provides a two-state display switching circuit, it includes: a first state indicating device, a second state indicating device, a power switch device, a signal switch S1 and a current limiting resistor R1; the first state indicating device, the second state indicating device and the current limiting resistor R1 are kept in parallel arrangement, the first state indicating device, the second state indicating device and the current limiting resistor R1 in parallel relation are integrally connected to one end of the signal switch S1, and the first state indicating device and the second state indicating device are connected to the other end of the signal switch S1 through power switch devices; when the signal switch S1 is turned off, the power switch device turns on the circuit in which the second status indication device is located, and when the signal switch S1 is turned on, the power switch device turns on the circuit in which the first status indication device is located. The utility model discloses utilize two way LED of switching value signal control seamless switching under different on-off states to switch on, have simple structure, easily realize, advantage with low costs.
Description
Technical Field
The utility model relates to a switching circuit especially relates to a two-state display switching circuit.
Background
Currently, in an operating circuit of an electronic device or the like, it is necessary to instruct a closed state of a switch. However, in order to meet the above indication requirement, in the prior art, the sensor is mainly used to collect the signal, which results in a complicated circuit structure due to the dependence on the sensor, is also inconvenient for debugging the circuit, and has a high cost. Therefore, it is necessary to provide a further solution to the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a two-state display switching circuit to overcome the not enough that exists among the prior art.
In order to solve the technical problem, the technical scheme of the utility model is that:
a two-state display switching circuit, comprising: a first state indicating device, a second state indicating device, a power switch device, a signal switch S1 and a current limiting resistor R1;
the first state indicating device, the second state indicating device and the current limiting resistor R1 are kept in parallel arrangement, the first state indicating device, the second state indicating device and the current limiting resistor R1 in parallel relation are integrally connected to one end of the signal switch S1, and the first state indicating device and the second state indicating device are connected to the other end of the signal switch S1 through the power switch;
when the signal switch S1 is turned off, the power switch device turns on the circuit in which the second status indication device is located, and when the signal switch S1 is turned on, the power switch device turns on the circuit in which the first status indication device is located.
As the utility model discloses a two state display switching circuit's improvement, first state indicating device and second state indicating device are emitting diode.
As the utility model discloses a two state display switching circuit's improvement, the power switch device is the triode.
As the utility model discloses a two state display switching circuit's improvement, the triode is the NPN triode.
As the utility model discloses a two states show switching circuit 'S improvement, first state indicating device with the base of triode is connected, second state indicating device with the collecting electrode of triode is connected, the base of triode is connected to signal switch S1' S the other end.
As an improvement of the two-state display switching circuit of the present invention, the two-state display switching circuit further includes current limiting resistors R3 and R4, the current limiting resistor R3 is connected in series to the loop where the first state indicator is located, and the current limiting resistor R4 is connected in series to the loop where the second state indicator is located.
As the utility model discloses an improvement of two state display switching circuit, two state display switching circuit still includes current limiting resistor R2, current limiting resistor R2 connect in between current limiting resistor R1 and the first status indicator device.
As the utility model discloses an improvement of two state display switching circuit, two state display switching circuit still includes current limiting resistor R5, current limiting resistor R5 connect in between first state indicating device and the power switch device.
As an improvement of the two-state display switching circuit of the present invention, the signal switch S1 is a general switch or a relay.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a two states show switching circuit utilizes two way LED of switching value signal control seamless switching under different on-off states to switch on, has simple structure, easily realizes, only needs a switching value control signal, advantage with low costs.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a circuit diagram of a two-state display switching circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a two-state display switching circuit, it includes: the power switch comprises a first state indicating device, a second state indicating device, a power switch device, a signal switch and a current limiting resistor R1;
the first state indicating device, the second state indicating device and the current limiting resistor R1 are kept in parallel arrangement, the first state indicating device, the second state indicating device and the current limiting resistor R1 in parallel relation are integrally connected to one end of the signal switch, and the first state indicating device and the second state indicating device are connected to the other end of the signal switch through the power switch;
when the signal switch is switched off, the power switch device enables the loop where the second state indicating device is located to be in a conducting state, and when the signal switch is switched off, the power switch device enables the loop where the first state indicating device is located to be in a conducting state.
The technical solution of the two-state display switching circuit of the present invention is exemplified below with reference to a specific embodiment.
As shown in fig. 1, the two-state display switching circuit of the present embodiment includes: a first status indicating device LED1, a second status indicating device LED2, a power switch Q1, a signal switch S1, and a current limiting resistor R1.
The first status indicating device LED1, the second status indicating device LED2 and the current limiting resistor R1 are maintained in parallel, the first status indicating device LED1, the second status indicating device LED2 and the current limiting resistor R1 in parallel relation are integrally connected to one end of the signal switch S1, and the first status indicating device LED1 and the second status indicating device LED2 are connected to the other end of the signal switch S1 via the power switch device Q1.
When the signal switch S1 is turned off, the power switch Q1 turns on the circuit where the second status indicator LED2 is located, and when the signal switch S1 is turned on, the power switch Q1 turns on the circuit where the first status indicator LED1 is located.
In this embodiment, both the first status indicating device LED1 and the second status indicating device LED2 are light emitting diodes. The power switching device Q1 is a transistor, and the transistor is an NPN transistor. Signal switch S1 is a conventional switch or relay or other switching node. At this time, the first status indicating device LED1 is connected to the base of the transistor, the second status indicating device LED2 is connected to the collector of the transistor, and the base of the transistor is connected to the other end of the signal switch S1.
In addition, the two-state display switching circuit further comprises current limiting resistors R2-R5, wherein the current limiting resistor R3 is connected in series with a loop where the first state indicator is located, and the current limiting resistor R4 is connected in series with a loop where the second state indicator LED2 is located; the current limiting resistor R2 is connected between the current limiting resistor R1 and the first status indicating device LED 1; a current limiting resistor R5 is connected between the first status indicating device LED1 and the power switch device Q1.
Thus, for example, when the signal switch S1 is turned off, the transistor Q1(Ib is about 1.1mA) is turned on to enter a saturation state, the LED2 emits light, and the LED1 is turned off by the transistor Q1 being turned on; when the signal switch S1 is closed, the base voltage of the triode Q1 is pulled low and is turned off, the Vdc voltage forms a loop in the current-limiting resistor R2, the current-limiting resistor R3, the LED1 and the signal switch S1, and the LED1 is turned on to emit light; when the signal switch S1 is closed, the current flowing through the current-limiting resistor R1 is small because of its large resistance, and the power consumption is negligible.
To sum up, the utility model discloses a two states show switching circuit utilizes two way LEDs of switching value signal control seamless switching under different on-off states to switch on, has simple structure, easily realizes, only needs a switching value control signal, advantage with low costs.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A two-state display switching circuit, comprising: a first state indicating device, a second state indicating device, a power switch device, a signal switch S1 and a current limiting resistor R1;
the first state indicating device, the second state indicating device and the current limiting resistor R1 are kept in parallel arrangement, the first state indicating device, the second state indicating device and the current limiting resistor R1 in parallel relation are integrally connected to one end of the signal switch S1, and the first state indicating device and the second state indicating device are connected to the other end of the signal switch S1 through the power switch;
when the signal switch S1 is turned off, the power switch device turns on the circuit in which the second status indication device is located, and when the signal switch S1 is turned on, the power switch device turns on the circuit in which the first status indication device is located.
2. The two-state display switching circuit according to claim 1, wherein the first and second state indicating devices are light emitting diodes.
3. The two-state display switching circuit according to claim 1 or 2, wherein the power switching device is a triode.
4. The two-state display switching circuit according to claim 3, wherein the transistor is an NPN transistor.
5. The two-state display switching circuit of claim 4, wherein the first state indicating device is coupled to a base of the transistor, the second state indicating device is coupled to a collector of the transistor, and the base of the transistor is coupled to the other end of the signal switch S1.
6. The two-state display switching circuit according to claim 1, further comprising current limiting resistors R3 and R4, wherein the current limiting resistor R3 is connected in series to the circuit of the first state indicator, and wherein the current limiting resistor R4 is connected in series to the circuit of the second state indicator.
7. The two-state display switching circuit according to claim 1, further comprising a current limiting resistor R2, wherein the current limiting resistor R2 is connected between the current limiting resistor R1 and the first state indicating device.
8. The two-state display switching circuit according to claim 1, further comprising a current limiting resistor R5, wherein the current limiting resistor R5 is connected between the first state indicating device and the power switch device.
9. The two-state display switching circuit according to claim 1, wherein the signal switch S1 is a normal switch or a relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020822024.6U CN211830733U (en) | 2020-05-18 | 2020-05-18 | Two-state display switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020822024.6U CN211830733U (en) | 2020-05-18 | 2020-05-18 | Two-state display switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211830733U true CN211830733U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020822024.6U Active CN211830733U (en) | 2020-05-18 | 2020-05-18 | Two-state display switching circuit |
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| Country | Link |
|---|---|
| CN (1) | CN211830733U (en) |
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2020
- 2020-05-18 CN CN202020822024.6U patent/CN211830733U/en active Active
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