CN204783770U - Electric fan indicates to touch warning circuit - Google Patents
Electric fan indicates to touch warning circuit Download PDFInfo
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- CN204783770U CN204783770U CN201520347784.5U CN201520347784U CN204783770U CN 204783770 U CN204783770 U CN 204783770U CN 201520347784 U CN201520347784 U CN 201520347784U CN 204783770 U CN204783770 U CN 204783770U
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Abstract
The utility model discloses an electric fan indicates to touch warning circuit, including chip U1, chip U2, resistance R1, electric capacity C1, rectifier bridge Q, transformer T and switch S. The utility model discloses the circuit is when child's hand touch and fan screen panel, and the fan still sends the sound of barking for a moment when losing the electricity immediately to the warning child don't go the touch again, leave the metal screen panel after about several seconds when the hand, the automatic telegram in reply of electric fan is opened, and is very practical, safe and reliable.
Description
Technical field
The utility model relates to a kind of warning circuit, and specifically a kind of electric fan refers to touch warning circuit.
Background technique
Fan is as the requirement of family of modern society, substantially every household all can have more than one now, but fan all exists very large potential safety hazard, particularly for children, innocent they go to stab the electric fan run with finger possibly, abnormally dangerous.
Model utility content
The purpose of this utility model is to provide a kind of safe and reliable electric fan to refer to touch warning circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technological scheme:
A kind of electric fan refers to touch warning circuit, comprises chip U1, chip U2, resistance R1, electric capacity C1, rectifier bridge Q, transformer T and switch S, described switch S one end connects 220V Ac one end, and the switch S the other end connects motor M respectively, resistance R6 and transformer T coil L2, the transformer T coil L2 the other end is the contact resistance R6 the other end respectively, the 220V Ac the other end, transformer T coil L1, the T1 pole of rectifier bridge Q pin 3 and bidirectional triode thyristor VS, the transformer T coil L1 the other end connects rectifier bridge Q pin 1, rectifier bridge Q pin 2 and connects electric capacity C4 respectively, diode D1 positive pole, electric capacity C3, resistance R3, electric capacity C2, chip U1 pin 1, electric capacity C1, resistance R8, chip U2 pin 2 and triode VT2 emitter, rectifier bridge Q pin 4 connects the electric capacity C4 the other end respectively, diode D1 negative pole, triode VT1 emitter, chip U1 pin 4, chip U1 pin 8, resistance R2, resistance R1, loudspeaker B, resistance R9 and triode VT3 collector electrode, the T2 pole of described motor M the other end difference contact resistance R5 and bidirectional triode thyristor VS, the G pole contact resistance R4 of bidirectional triode thyristor VS, the resistance R4 the other end is the contact resistance R3 the other end and triode VT1 collector electrode respectively, triode VT1 base stage connects chip U1 pin 3 and resistance R7 respectively, resistance R7 the other end connecting triode VT3 base stage, triode VT3 emitter is the contact resistance R8 the other end and chip U2 pin 1 respectively, chip U2 pin 3 connecting triode VT2 base stage, triode VT2 collector electrode connects the loudspeaker B the other end, the described chip U2 pin 4 contact resistance R9 the other end, described chip U1 pin 5 connects the electric capacity C2 the other end, chip U1 pin 2 is the contact resistance R1 the other end and fan screen respectively, and chip U1 pin 6 connects chip U1 pin 7 respectively, the resistance R2 the other end and the electric capacity C1 the other end.
As further program of the utility model: described chip U1 model is NE556.
As the utility model further scheme: described chip U2 model is NS5608.
Compared with prior art, the beneficial effects of the utility model are: the utility model circuit is when the hand of child touches fan screen, and fan also sends a burst of barking while dead electricity immediately, do not go to touch to warn child again; After hand leaves metal net mask about a few second, electric fan is sent a telegram in reply unlatching automatically, very practical, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the circuit diagram that electric fan refers to touch warning circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of electric fan refers to touch warning circuit, comprises chip U1, chip U2, resistance R1, electric capacity C1, rectifier bridge Q, transformer T and switch S, switch S one end connects 220V Ac one end, and the switch S the other end connects motor M respectively, resistance R6 and transformer T coil L2, the transformer T coil L2 the other end is the contact resistance R6 the other end respectively, the 220V Ac the other end, transformer T coil L1, the T1 pole of rectifier bridge Q pin 3 and bidirectional triode thyristor VS, the transformer T coil L1 the other end connects rectifier bridge Q pin 1, rectifier bridge Q pin 2 and connects electric capacity C4 respectively, diode D1 positive pole, electric capacity C3, resistance R3, electric capacity C2, chip U1 pin 1, electric capacity C1, resistance R8, chip U2 pin 2 and triode VT2 emitter, rectifier bridge Q pin 4 connects the electric capacity C4 the other end respectively, diode D1 negative pole, triode VT1 emitter, chip U1 pin 4, chip U1 pin 8, resistance R2, resistance R1, loudspeaker B, resistance R9 and triode VT3 collector electrode, the T2 pole of motor M the other end difference contact resistance R5 and bidirectional triode thyristor VS, the G pole contact resistance R4 of bidirectional triode thyristor VS, the resistance R4 the other end is the contact resistance R3 the other end and triode VT1 collector electrode respectively, triode VT1 base stage connects chip U1 pin 3 and resistance R7 respectively, resistance R7 the other end connecting triode VT3 base stage, triode VT3 emitter is the contact resistance R8 the other end and chip U2 pin 1 respectively, chip U2 pin 3 connecting triode VT2 base stage, triode VT2 collector electrode connects the loudspeaker B the other end, the chip U2 pin 4 contact resistance R9 the other end, chip U1 pin 5 connects the electric capacity C2 the other end, chip U1 pin 2 is the contact resistance R1 the other end and fan screen respectively, and chip U1 pin 6 connects chip U1 pin 7 respectively, the resistance R2 the other end and the electric capacity C1 the other end.
Chip U1 model is NE556.
Chip U2 model is NS5608.
Working principle of the present utility model is: when no one touches fan screen, chip U1 pin 3 output low level, triode VT1 conducting, controls bidirectional triode thyristor VS conducting, thus has electric current by fan electromotor M, motor M is rotated, its rotational speed depends on the voltage at motor M two ends, and this voltage controls by the angle of flow of bidirectional triode thyristor VS again, changes the value of resistance R4, the size of the angle of flow can be changed, thus the size of air quantity of fan can be changed.
If when someone touches fan screen, then chip U1 pin 3 exports high level, triode VT1 pipe is ended, bidirectional triode thyristor VS is forced to end, thus make fan stall, chip U1 pin 3 level also makes the conducting of VT3 pipe simultaneously, and trigger barking integrated chip U2 work, its output signal promotes loudspeaker B and sends barking after VT2 amplifies.
When hand leaves metal net mask, after the time lag of 1.1*R2*C1, chip U1 overturns reset, chip U1 pin 3 output low level, thus fan starts again normal work.
Claims (1)
1. electric fan refers to touch a warning circuit, comprises chip U1, chip U2, resistance R1, electric capacity C1, rectifier bridge Q, transformer T and switch S, is characterized in that, described switch S one end connects 220V Ac one end, and the switch S the other end connects motor M respectively, resistance R6 and transformer T coil L2, the transformer T coil L2 the other end is the contact resistance R6 the other end respectively, the 220V Ac the other end, transformer T coil L1, the T1 pole of rectifier bridge Q pin 3 and bidirectional triode thyristor VS, the transformer T coil L1 the other end connects rectifier bridge Q pin 1, rectifier bridge Q pin 2 and connects electric capacity C4 respectively, diode D1 positive pole, electric capacity C3, resistance R3, electric capacity C2, chip U1 pin 1, electric capacity C1, resistance R8, chip U2 pin 2 and triode VT2 emitter, rectifier bridge Q pin 4 connects the electric capacity C4 the other end respectively, diode D1 negative pole, triode VT1 emitter, chip U1 pin 4, chip U1 pin 8, resistance R2, resistance R1, loudspeaker B, resistance R9 and triode VT3 collector electrode, the T2 pole of described motor M the other end difference contact resistance R5 and bidirectional triode thyristor VS, the G pole contact resistance R4 of bidirectional triode thyristor VS, the resistance R4 the other end is the contact resistance R3 the other end and triode VT1 collector electrode respectively, triode VT1 base stage connects chip U1 pin 3 and resistance R7 respectively, resistance R7 the other end connecting triode VT3 base stage, triode VT3 emitter is the contact resistance R8 the other end and chip U2 pin 1 respectively, chip U2 pin 3 connecting triode VT2 base stage, triode VT2 collector electrode connects the loudspeaker B the other end, the described chip U2 pin 4 contact resistance R9 the other end, described chip U1 pin 5 connects the electric capacity C2 the other end, chip U1 pin 2 is the contact resistance R1 the other end and fan screen respectively, and chip U1 pin 6 connects chip U1 pin 7 respectively, the resistance R2 the other end and the electric capacity C1 the other end, described chip U1 model is NE556, and described chip U2 model is NS5608.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347784.5U CN204783770U (en) | 2015-05-26 | 2015-05-26 | Electric fan indicates to touch warning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347784.5U CN204783770U (en) | 2015-05-26 | 2015-05-26 | Electric fan indicates to touch warning circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204783770U true CN204783770U (en) | 2015-11-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520347784.5U Expired - Fee Related CN204783770U (en) | 2015-05-26 | 2015-05-26 | Electric fan indicates to touch warning circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204783770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832447A (en) * | 2015-05-26 | 2015-08-12 | 苏州达泰佳机械科技有限公司 | Finger touch alarming circuit of electric fan |
-
2015
- 2015-05-26 CN CN201520347784.5U patent/CN204783770U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832447A (en) * | 2015-05-26 | 2015-08-12 | 苏州达泰佳机械科技有限公司 | Finger touch alarming circuit of electric fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160526 |