CN210469830U - Switch circuit for human body touch bulb - Google Patents
Switch circuit for human body touch bulb Download PDFInfo
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- CN210469830U CN210469830U CN201921616149.7U CN201921616149U CN210469830U CN 210469830 U CN210469830 U CN 210469830U CN 201921616149 U CN201921616149 U CN 201921616149U CN 210469830 U CN210469830 U CN 210469830U
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Abstract
The utility model discloses a switch circuit for a human touch bulb, which comprises an input power supply, wherein the input power supply is sequentially connected with a rectifying circuit, a voltage stabilizing circuit, a filter circuit, a clamping limiting circuit and a touch control circuit, and the clamping limiting circuit comprises a first triode to a third triode and a first resistor to a fourth resistor; the first end of first resistance is connected to the collecting electrode of first triode, the collecting electrode of second triode is connected to the projecting pole of first triode, the second end of first resistance is connected with the base of second triode and the collecting electrode of third triode respectively, the second end of second resistance is connected to the base of third triode, the first end of third resistance is connected to the first end of second resistance, the first end of fourth resistance is connected to the third end of third resistance, the second end of fourth resistance, the projecting pole of the projecting pole fourth triode of third triode all ground connection, the utility model discloses good market using value has.
Description
Technical Field
The utility model relates to the control field especially involves a be used for human touching bulb switch circuit.
Background
At present, bulbs are generally installed in front of gates of all households in rural areas, the bulbs are generally controlled by manual brake pulling or button switches, voice-operated bulbs are installed in cities for a while, people turn on the bulbs when going to a toilet at night, and the bulbs can light all night after coming back from the toilet because the people easily forget to turn off the bulbs due to vague confusion, so that the energy-saving and environment-friendly effects are very bad; accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model provides a switch that is used for human touching bulb switch circuit, controls the bulb through touching the sheetmetal, has solved people and has forgotten the problem of turning off the lamp and wasting the electric energy.
In a first aspect, the present invention discloses a technical solution as follows:
a switch circuit for touching a bulb by a human body comprises an input power supply, a rectifying circuit, a voltage stabilizing circuit, a filter circuit, a clamping limiting circuit and a touch control circuit; the input power supply is sequentially connected with the rectifying circuit, the voltage stabilizing circuit, the filter circuit, the clamping limiting circuit and the touch control circuit, and the clamping limiting circuit comprises a first triode to a third triode and a first resistor to a fourth resistor; the collecting electrode of first triode connects the first end of first resistance, the collecting electrode of second triode is connected to the projecting pole of first triode, the second end of first resistance is connected with the base of second triode and the collecting electrode of third triode respectively, the second end of second resistance is connected to the base of third triode, the first end of third resistance is connected to the first end of second resistance, the first end of fourth resistance is connected to the third end of third resistance, the second end of fourth resistance, the projecting pole of the projecting pole fourth triode of third triode all ground connection.
With reference to the first aspect, in a first implementation manner of the first aspect, an input power source is 220V commercial power, a live wire of the input power source is connected to one end of a bulb L1, and the other end of the bulb L1 is connected to a rectifying circuit, where the rectifying circuit includes a rectifying bridge and a first capacitor; the other end of the bulb L1 is connected with a pin of the rectifier bridge, three pins of the rectifier bridge are connected with the first end of the first capacitor, two pins of the rectifier bridge are grounded, four pins of the rectifier bridge are connected with a zero line, and the second end of the first capacitor is grounded.
With reference to the first aspect, in a second implementation manner of the first aspect, the filter circuit includes first to fifth diodes, a second capacitor, a third capacitor, a fourth capacitor, and fifth to seventh resistors; the anode of the first diode is respectively connected with the first end of the first capacitor and the first pin of the second diode, the cathode of the first diode is connected with the first end of the fifth resistor, the second end of the fifth resistor is grounded, the second pin of the second diode is connected with the anode of the third diode, the third pin of the second diode is respectively connected with the first end of the second capacitor, the sixth resistor and the first end of the seventh resistor, the second end of the second capacitor and the second end of the seventh resistor are both grounded, the second end of the sixth resistor is respectively connected with the first end of the third capacitor and the emitter of the first triode, the second end of the third capacitor is grounded, the cathode of the third diode is respectively connected with the anode of the fourth diode and the cathode of the fifth diode, the anode of the fifth diode is respectively connected with the first end of the fourth capacitor and the first end of the third resistor and the first end of the second resistor, and the cathode of the fourth diode is grounded.
With reference to the first aspect, in a third implementation manner of the first aspect, the voltage stabilizing circuit includes a sixth diode, an eighth resistor, and a ninth resistor; the eighth resistor and the ninth resistor are connected in parallel, first ends of the eighth resistor and the ninth resistor are connected with a first pin of the second diode, second ends of the eighth resistor and the ninth resistor are connected with a negative electrode of the sixth diode, and an anode of the sixth diode is connected with a first end of the third resistor.
With reference to the first aspect, in a fourth implementation manner of the first aspect, the touch control circuit includes tenth to twelfth resistors and a touch metal sheet; the touch metal sheet is connected with a second end of a tenth resistor, a first end of the tenth resistor is connected with a second end of an eleventh resistor, a first end of the eleventh resistor is respectively connected with a first end of a twelfth resistor and a base electrode of a first triode, and a second end of the twelfth resistor is grounded.
According to the technical scheme, the bulb L1 is lightened through people touching the metal sheet, the bulb is extinguished after a current loop is cut off, namely when a touch end M1 of the circuit is touched by people, a human body induction signal is input into the base electrode of the Q1 through the R5 and the R4, the Q1 is conducted, power supply voltage is added to the control electrode of the thyristor Q2 through the Q1 and the R6, the Q2 is conducted, and the lamp is lightened; after a period of time, the bulb is turned off after the current backflow is cut off, the possibility that the bulb may be on overnight is effectively changed, and the energy-saving and environment-friendly lamp is energy-saving and environment-friendly.
Drawings
For a clearer explanation of the embodiments or technical solutions in the prior art, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a switch circuit for a human body touching a bulb according to the present invention;
fig. 2 is a circuit diagram of the switch circuit for the human body touching the bulb according to the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The use of the terms "fixed," "integrally formed," "left," "right," and the like in this specification is for illustrative purposes only, and elements having similar structures are designated by the same reference numerals in the figures.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1, the present disclosure provides an embodiment of the present invention:
a switch circuit for touching a bulb by a human body comprises an input power supply, a rectifying circuit, a voltage stabilizing circuit, a filter circuit, a clamping limiting circuit and a touch control circuit; the input power supply is sequentially connected with the rectifying circuit, the voltage stabilizing circuit, the filter circuit, the clamping limiting circuit and the touch control circuit, and the clamping limiting circuit comprises a first triode Q1-a third triode Q4, a first resistor R3-a fourth resistor R10; the collector of the first triode Q1 is connected with the first end of a first resistor R3, the emitter of the first triode Q1 is connected with the collector of a second triode Q3, the second end of the first resistor R3 is connected with the base of a second triode Q3 and the collector of a third triode Q4, the base of the third triode Q4 is connected with the second end of the second resistor R9, the first end of the second resistor R9 is connected with the first end of a third resistor R11, the third end of the third resistor R11 is connected with the first end of a fourth resistor R10, and the second end of the third resistor R11, the second end of the fourth resistor R10 and the emitter of the fourth triode Q4 are all grounded.
As shown in fig. 2, in one embodiment, the input power is 220V commercial power, the live wire of the input power is connected to one end of a bulb L1, the other end of the bulb L1 is connected to a rectifying circuit, and the rectifying circuit includes a rectifying bridge and a first capacitor C3; the other end of the bulb L1 is connected with a pin of a rectifier bridge, three pins of the rectifier bridge are connected with the first end of a first capacitor C3, two pins of the rectifier bridge are grounded, four pins of the rectifier bridge are connected with a zero line, and the second end of the first capacitor C3 is grounded.
As shown in fig. 2, in one embodiment, the filter circuit includes a first diode D5 to a fifth diode D4, a second capacitor C1, a third capacitor C2, a fourth capacitor C4, a fifth resistor R12 to a seventh resistor R7; the anode of the first diode D5 is connected to the first terminal of the first capacitor C3 and the first pin of the second diode Q2, the cathode of the first diode D5 is connected to the first terminal of the fifth resistor R12, the second terminal of the fifth resistor R12 is grounded, the second pin of the second diode Q2 is connected to the anode of the third diode D3, the third pin of the second diode Q2 is connected to the first terminal of the second capacitor C1, the sixth resistor R6 and the first terminal of the seventh resistor R7, the second terminal of the second capacitor C1 and the second terminal of the seventh resistor R24 are grounded, the second terminal of the sixth resistor R6 is connected to the first terminal of the third capacitor C2 and the emitter of the first triode Q9, the second terminal of the third capacitor C2 is grounded, the cathode of the third diode D3 is connected to the anode of the fourth diode D6 and the cathode of the fifth diode D4, and the cathode of the third diode D3 is connected to the first terminal of the fourth diode D6 and the first terminal of the first resistor R867 and the first terminal of the fourth resistor R8658, respectively And the cathode of the fourth diode D6 is connected to ground.
As shown in FIG. 2, in one embodiment, the voltage regulation circuit includes a sixth diode D1, an eighth resistor R1, and a ninth resistor R2; the eighth resistor R1 and the ninth resistor R2 are connected in parallel, first ends of the eighth resistor R1 and the ninth resistor R2 are connected with a first pin of a second diode Q2, second ends of the eighth resistor R1 and the ninth resistor R2 are connected with a negative electrode of a sixth diode D1, and an anode of the sixth diode D1 is connected with a first end of a third resistor R11.
As shown in fig. 2, in one embodiment, the touch control circuit includes tenth to twelfth resistors R5 to R8 and a touch metal sheet M1; the touch metal sheet M1 is connected to a second end of a tenth resistor R5, a first end of the tenth resistor R5 is connected to a second end of an eleventh resistor R4, a first end of the eleventh resistor R4 is respectively connected to a first end of a twelfth resistor R8 and a base of a first triode Q1, and a second end of the twelfth resistor R8 is grounded.
The utility model discloses a theory of operation:
in the circuit, M1 is a touch metal sheet, D2 is a rectifier bridge, and L1 is a bulb. When the rectifier bridge has a current loop, the bulb is lighted; after the current loop is cut off, the lamp bulb is turned off;
the 220V mains supply is rectified by a bulb and a full bridge and then is added to a thyristor Q2, and since no trigger control signal exists at the beginning of Q2, the state is turned off; the other path supplies power to the circuit through R1 and R2. In an initial state, the base of the Q1 is cut off at a low level, the voltage regulator tube D1 is conducted to charge the capacitor C4 due to the fact that the voltage of the upper end is higher than 12V, the capacitor C4 is fully charged soon, the full-charge voltage of the capacitor is limited to about 1.4V by clamping of the diode D4 and the diode D6, the voltage is input to the base of the Q4 through R9, the Q4 is conducted, the Q3 is cut off, the Q2 is turned off, and the bulb is extinguished.
When a human body touches the touch end M1 of the circuit, a sensing signal of the human body is input into the base of the Q1 through the R5 and the R4, the Q1 is conducted, the power voltage is applied to the control electrode of the thyristor Q2 through the Q1 and the R6, the Q2 is conducted, and the lamp is turned on.
Because the power supply voltage of the circuit is pulled down by the conduction of the Q2, the voltage stabilizing diode D1 can not be conducted in a reverse breakdown mode, one path of discharging of the capacitor C4 is discharged through the R11 and the R10, and the other path of discharging of the capacitor C4 maintains the conduction of the Q4 through the R9. During the process of human body touch, the touch signal of the human body only needs one moment, when the trigger signal of the human body comes, the voltage on the C2 is quickly charged to the power supply voltage, and at this time, even if the trigger signal of the human body disappears, the thyristor Q2 maintains the conducting state due to the action of the capacitor C2.
The full charge voltage of C2 is 12V, and the full charge voltage of C4 is 1.4V. When debugging the circuit, adjust R11, make the first discharge of electric capacity C4 finish. Therefore, the time delay after the lamp is turned on depends on the time of maintaining the voltage on the C4, so that the combination of C4, R11 and R10 is selected to control the time delay.
When the voltage of the C4 is put to a value which can not maintain the conduction of the triode Q4, the Q4 is cut off, the Q3 is conducted, the control end of the thyristor has no trigger signal, and the thyristor is cut off when the alternating voltage passes through zero, so that the lamp is extinguished.
Claims (5)
1. A switch circuit for a human body touch bulb is characterized by comprising an input power supply, a rectifying circuit, a voltage stabilizing circuit, a filter circuit, a clamping limiting circuit and a touch control circuit; the input power supply is sequentially connected with the rectifying circuit, the voltage stabilizing circuit, the filter circuit, the clamping limiting circuit and the touch control circuit, and the clamping limiting circuit comprises a first triode to a third triode and a first resistor to a fourth resistor; the collecting electrode of first triode connects the first end of first resistance, the collecting electrode of second triode is connected to the projecting pole of first triode, the second end of first resistance is connected with the base of second triode and the collecting electrode of third triode respectively, the second end of second resistance is connected to the base of third triode, the first end of third resistance is connected to the first end of second resistance, the first end of fourth resistance is connected to the third end of third resistance, the second end of fourth resistance, the projecting pole of the projecting pole fourth triode of third triode all ground connection.
2. The switch circuit for the human body touch bulb as claimed in claim 1, wherein the input power is 220V commercial power, the live wire of the input power is connected with one end of a bulb L1, the other end of the bulb L1 is connected with a rectifying circuit, and the rectifying circuit comprises a rectifying bridge and a first capacitor; the other end of the bulb L1 is connected with a pin of the rectifier bridge, three pins of the rectifier bridge are connected with the first end of the first capacitor, two pins of the rectifier bridge are grounded, four pins of the rectifier bridge are connected with a zero line, and the second end of the first capacitor is grounded.
3. The switch circuit for the human body touch bulb as claimed in claim 2, wherein the filter circuit comprises a first diode to a fifth diode, a second capacitor, a third capacitor, a fourth capacitor, a fifth resistor to a seventh resistor;
the anode of the first diode is respectively connected with the first end of the first capacitor and the first pin of the second diode, the cathode of the first diode is connected with the first end of the fifth resistor, the second end of the fifth resistor is grounded, the second pin of the second diode is connected with the anode of the third diode, the third pin of the second diode is respectively connected with the first end of the second capacitor, the sixth resistor and the first end of the seventh resistor, the second end of the second capacitor and the second end of the seventh resistor are both grounded, the second end of the sixth resistor is respectively connected with the first end of the third capacitor and the emitter of the first triode, the second end of the third capacitor is grounded, the cathode of the third diode is respectively connected with the anode of the fourth diode and the cathode of the fifth diode, the anode of the fifth diode is respectively connected with the first end of the fourth capacitor and the first end of the third resistor and the first end of the second resistor, and the cathode of the fourth diode is grounded.
4. The switch circuit for the human body touch bulb as claimed in claim 1, wherein the voltage stabilizing circuit comprises a sixth diode, an eighth resistor and a ninth resistor; the eighth resistor and the ninth resistor are connected in parallel, first ends of the eighth resistor and the ninth resistor are connected with a first pin of the second diode, second ends of the eighth resistor and the ninth resistor are connected with a negative electrode of the sixth diode, and an anode of the sixth diode is connected with a first end of the third resistor.
5. The switch circuit for the human body to touch the bulb according to claim 1, wherein the touch control circuit comprises tenth to twelfth resistors and a touch metal sheet; the touch metal sheet is connected with a second end of a tenth resistor, a first end of the tenth resistor is connected with a second end of an eleventh resistor, a first end of the eleventh resistor is respectively connected with a first end of a twelfth resistor and a base electrode of a first triode, and a second end of the twelfth resistor is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921616149.7U CN210469830U (en) | 2019-09-26 | 2019-09-26 | Switch circuit for human body touch bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921616149.7U CN210469830U (en) | 2019-09-26 | 2019-09-26 | Switch circuit for human body touch bulb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210469830U true CN210469830U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921616149.7U Active CN210469830U (en) | 2019-09-26 | 2019-09-26 | Switch circuit for human body touch bulb |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210469830U (en) |
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2019
- 2019-09-26 CN CN201921616149.7U patent/CN210469830U/en active Active
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