CN202979376U - Novel LED isolated touch switch power circuit - Google Patents
Novel LED isolated touch switch power circuit Download PDFInfo
- Publication number
- CN202979376U CN202979376U CN 201220589495 CN201220589495U CN202979376U CN 202979376 U CN202979376 U CN 202979376U CN 201220589495 CN201220589495 CN 201220589495 CN 201220589495 U CN201220589495 U CN 201220589495U CN 202979376 U CN202979376 U CN 202979376U
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- circuit
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- resistance
- touch switch
- capacitor
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Abstract
An LED isolated touch switch power circuit provided by the utility model is disclosed. The utility model is characterized by providing an isolated touch switch power circuit which operates stably and adopts voltage-reduction and constant-current electron components to directly drive LED light sources. The LED isolated touch switch power circuit is composed of a rectifying circuit, a touch switch circuit and an isolated constant flow source circuit. The rectifying circuit is connected with an external alternating current power supply and a cartridge fuse is connected in series between the rectifying circuit and a power line. A piezoresistor is connected between the power line and a zero line.
Description
Technical field
The utility model relates to the lighting power technique fields, the isolated novel touch switching power circuit of espespecially a kind of LED.
Background technology
The plurality of advantages that LED light source is energy-efficient, environment friendly and pollution-free with it, good visual effect, life-span are long just progressively replaces most traditional lighting mode, becomes the main flow of lighting technology development, compare common energy-saving lamp, the environmental protection of LED electricity-saving lamp is not mercurous, recyclable recycling, power is little, high light efficiency, long-life, namely open namely bright, anti-frequent switch, light decay is little, rich color, tunable optical, change is abundant.A large amount of common energy-saving lamps that use can cause mercury pollution, contaminated soil water source, thereby contaminated food products indirectly, and environmental hazard can not be despised.With transformer, the input and output of power supply are kept apart, even output short-circuit or people touch output and also the phenomenon that shocks by electricity can not occur like this, driven for the civil power alternating current input power supplying, isolation output is based on the requirement of safety standard.The isolation scheme advantage is his good stability, and it is strong that ability is disturbed in anti-sense, and fail safe is relatively easily controlled; The advantage of insulating power supply is embodied in isolation naturally, its surge on can the isolating exterior circuit, and pulse and interference etc. guarantee the stable of power supply output, effectively protect the LED light fixture.
Summary of the invention
The isolated novel touch switching power circuit of a kind of LED of the utility model is characterized in that: a kind of working stability is provided, uses the isolated power circuit of soft-touch control that contains step-down and the direct driving LED light source of current stabilization electronic devices and components.
To achieve these goals, technical solution of the present utility model is: the isolated novel touch switching power circuit of a kind of LED is comprised of rectification circuit, touch switch circuit and isolated constant-current source circuit, rectification circuit is connected with external ac power source, and being connected in series cartridge fuse with the centre that is connected of live wire, connect piezo-resistance between live wire and zero line.
Described rectification circuit is made of diode D1～D4, cartridge fuse FUSE, common mode inductance L, piezo-resistance R1, capacitor C 1 and C2.
Described touch switch circuit is made of resistance R 2～R6, electrochemical capacitor C3 and C5, capacitor C 4, diode D5, voltage stabilizing didoe D6, triode Q2, integrated IC1, controllable silicon SCR and touch sheet M.
Described isolated constant-current source circuit is made of electrochemical capacitor C7, C8 and C12, capacitor C 6, C9～C11, isolated transformer T, field effect transistor Q1, diode D7～D12, integrated IC2 and resistance R 7～R13.
the beneficial effects of the utility model are: finger is had a touch with touch sheet M, the alternating current that human body leaks, make triode Q2 conducting by resistance, its signal enters the input pin of IC1, and make integrated IC1 bistable circuit counter-rotating once, its output pin current potential also just changes once, when output pin current potential is high potential, trigger the silicon controlled control utmost point and make its conducting, and then the isolated constant-current source circuit of conducting makes LED array luminous, thus, finger is often had a touch with touch sheet M, just can realize once the action of " opening " or " pass ", conducting or turn off thyristor, reach the effect that LED array is lighted or extinguished, simple and convenient during use, safety and stability, life-span is long.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Accompanying drawing 1 is the circuit theory diagrams of the isolated novel touch switching power circuit of a kind of LED.
Embodiment
as shown in drawings: the isolated novel touch switching power circuit of a kind of LED is by rectification circuit, touch switch circuit and isolated constant-current source circuit form, rectification circuit is connected with external ac power source, and meeting piezo-resistance R1 with being connected between the serial connection cartridge fuse FUSE zero line of centre of live wire, rectification circuit is by diode D1～D4, cartridge fuse FUSE, common mode inductance L, piezo-resistance R1, capacitor C 1 and C2 consist of, touch switch circuit is by resistance R 2～R6, electrochemical capacitor C3 and C5, capacitor C 4, diode D5, voltage stabilizing didoe D6, triode Q2, integrated IC1, controllable silicon SCR and touch sheet M consist of, isolated constant-current source circuit is by electrochemical capacitor C7, C8 and C12, capacitor C 6, C9～C11, isolated transformer T, field effect transistor Q1, diode D7～D12, integrated IC2 and resistance R 7～R13 consist of.
the D1 of the rectifier bridge that resistance R 2 and diode D1～D4 forms is connected contact and is connected with D3, and respectively with the positive pole of electrochemical capacitor C8, capacitor C 6 and C9, one end of the primary coil of isolated transformer T, diode D9, resistance R 7 is connected with R8, the other end of the primary coil of isolated transformer T is connected with the other end of capacitor C 9 with resistance R 8 by diode D10, the other end of resistance R 2 is connected with diode D5, the other end of diode D5 is connected with the negative pole end D2 of rectifier bridge and the contact of D4 by voltage stabilizing didoe D6, the positive pole of electrochemical capacitor C3 is connected contact and is connected with voltage stabilizing didoe D6 with diode D5, and respectively with capacitor C 4, the pin one 6 of integrated IC1 is connected with the collector electrode of triode Q2, touch sheet M is connected with the base stage of triode Q2 by resistance R 3, the emitter of triode Q2 is connected with the pin one 4 of integrated IC1 by resistance R 4, resistance R 4 is connected with resistance R 5 again, the pin one 4 of integrated IC1 is connected with the positive pole of electrochemical capacitor C5 again, the other end of resistance R 5, the negative pole of electrochemical capacitor C5, the negative electrode of controllable silicon SCR, the pin 8 of integrated IC1 and pin one 3 all are connected to the negative pole of rectifier bridge, the pin 4 of integrated IC1 is connected with pin one 5, pin two is connected with the control utmost point of controllable silicon SCR by resistance R 6, the anode of controllable silicon SCR respectively with the negative pole of electrochemical capacitor C7, capacitor C 6 and C10, diode D7, resistance R 10 and R11, sample coil one end of the pin Gnd of integrated IC2 and isolated transformer T is connected, the other end of capacitor C 10 respectively with the pin Vcc of integrated IC2, diode D11 is connected with resistance R 7, the other end of resistance R 10 is connected with the pin CS of integrated IC2 and the drain electrode of field effect transistor Q1, the other end of resistance R 11 is connected with R12 with the pin FB of integrated IC2 respectively, the other end of resistance R 12 is connected with diode D11 and is connected with the sample coil other end of isolated transformer T, the source electrode of field effect transistor Q1 is connected with the contact of the primary coil other end of diode D10 and isolated transformer T, the grid of field effect transistor Q1 is connected with the pin Gate of integrated IC2, the positive pole of electrochemical capacitor C7 and resistance R 9, diode D9 is connected, the other end of resistance R 9 is connected with diode D8, diode D7 is connected with the contact of electrochemical capacitor C8 with diode D8, secondary coil one end of isolated transformer T is connected with the other end of secondary coil with electrochemical capacitor C12 by diode D12, capacitor C 11 and resistance R 13 are parallel to the two ends of electrochemical capacitor C12, electrochemical capacitor C12 two ends are as power take-off, connect LED array.
during use, finger is had a touch with touch sheet M, the alternating current that human body leaks, make triode Q2 conducting by resistance R 3, its signal enters the input pin one 4 of IC1, and make integrated IC1 bistable circuit counter-rotating once, its output pin two current potential also just changes once, when output pin two current potential is high potential, the control utmost point that triggers controllable silicon SCR makes its conducting, and then the isolated constant-current source circuit of conducting makes LED array luminous, thus, finger is often had a touch with touch sheet M, just can realize once the action of " opening " or " pass ", conducting or turn off thyristor SCR, reach the effect that LED array is lighted or extinguished, simple and convenient during use, safety and stability, life-span is long.
The above; execution mode is only that preferred implementation of the present utility model is described; be not that scope of the present utility model is limited; under the prerequisite of the spirit that does not break away from the utility model technology; various distortion and improvement that this area engineers and technicians make the technical solution of the utility model all should fall in the definite protection range of claims of the present utility model.
Claims (2)
1. isolated novel touch switching power circuit of LED, it is characterized in that: the isolated power circuit of described LED soft-touch control is comprised of rectification circuit, touch switch circuit and isolated constant-current source circuit.
2. the isolated novel touch switching power circuit of a kind of LED according to claim 1, it is characterized in that: described rectification circuit is by diode D1～D4, cartridge fuse FUSE, common mode inductance L, piezo-resistance R1, capacitor C 1 and C2 consist of, described touch switch circuit is by resistance R 2～R6, electrochemical capacitor C3 and C5, capacitor C 4, diode D5, voltage stabilizing didoe D6, triode Q2, integrated IC1, controllable silicon SCR and touch sheet M consist of, described isolated constant-current source circuit is by electrochemical capacitor C7, C8 and C12, capacitor C 6, C9～C11, isolated transformer T, field effect transistor Q1, diode D7～D12, integrated IC2 and resistance R 7～R13 consist of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220589495 CN202979376U (en) | 2012-11-11 | 2012-11-11 | Novel LED isolated touch switch power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220589495 CN202979376U (en) | 2012-11-11 | 2012-11-11 | Novel LED isolated touch switch power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202979376U true CN202979376U (en) | 2013-06-05 |
Family
ID=48520391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220589495 Expired - Fee Related CN202979376U (en) | 2012-11-11 | 2012-11-11 | Novel LED isolated touch switch power circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202979376U (en) |
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2012
- 2012-11-11 CN CN 201220589495 patent/CN202979376U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131111 |