CN201022188Y - A two line low internal voltage reduction induction switch with LED indicator light - Google Patents
A two line low internal voltage reduction induction switch with LED indicator light Download PDFInfo
- Publication number
- CN201022188Y CN201022188Y CNU2006200672029U CN200620067202U CN201022188Y CN 201022188 Y CN201022188 Y CN 201022188Y CN U2006200672029 U CNU2006200672029 U CN U2006200672029U CN 200620067202 U CN200620067202 U CN 200620067202U CN 201022188 Y CN201022188 Y CN 201022188Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- led
- voltage
- inductive switch
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements
Landscapes
- Electronic Switches (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a two-wire voltage reducing inductive switch with low inner voltage, which is provided with a LED pilot lamp. A voltage tapping circuit is formed by the serial connection between the inductive switch and a diode circuit. The voltage tapping circuit comprises two diodes which are parallel in front-to-back connection. The diodes which are in parallel are connected with a voltage rising driving circuit in parallel and the voltage rising driving circuit is connected with the LED. The utility model is characterized in that within the two-wire inductive switch which is arranged with the LED pilot lamp, about 0.7 to 0.8 voltage is obtained by the clockwise conduction of the diode, the LED is provided by the voltage rising circuit with enough power supply for conduction, the LED could be started with the low inner voltage about 0.7 to 0.8 voltage and the large volume of the current could pass the LED.
Description
Technical field
The utility model relates to a kind of inductive switch, is specifically related to the low internal pressure drops inductive switch that a kind of twin wire has LED light.
Background technology
Existing twin wire has the inductive switch of LED light, has following several: 1, as accompanying drawing 1, and LED of series connection on switch, its switching current is subject to LED, the about 20mA of electric current, and internal pressure drops is the forward conduction voltage drop of LED, is about 2V to 3V; 2,, behind current-limiting resistance of the LED on switch series connection, with the circuit of voltage stabilizing didoe parallel connection, can pass through bigger electric current, but still have the internal pressure drops of 2V to 3V again as accompanying drawing 2; 3,, behind current-limiting resistance of the series connection of the LED on the switch, with three diode in series and the circuit that reverse diode parallel connection is formed, can pass through bigger electric current again, but still have the internal pressure drops of 2.1V to 3V as accompanying drawing 3.Below all exist for the internal pressure drops that overcomes LED conduction voltage drop 2V to 3V, and its energy consumption is bigger.
The utility model content
In order to overcome above-mentioned defective, the purpose of this utility model provides and a kind ofly provides power drives LED by booster circuit, and makes the internal pressure drops of switch be reduced to 0.7V to 0.8V.
To achieve these goals, the utility model adopts following technical scheme:
A kind of twin wire has the inductive switch of LED light, and power supply connects load, diode pressure circuit and switch module, and diode pressure circuit connects driving LED by booster circuit.
Above-mentioned diode pressure circuit is made up of two both forward and reverse directions diode connected in parallel.In above-mentioned booster circuit, utilization discrete assembly, LC oscillation step-up circuit, or by utilization integrated package booster circuit.
The utility model has in the LED light inductive switch at TW two wire, by a diode forward conducting obtain the voltage of about 0.7V to 0.8V, use booster circuit that the supply voltage that is enough to conducting is provided to LED again, make the low internal pressure drops of its 0.7V to 0.8V also can start LED work, and can pass through big electric current, cut down the consumption of energy.
Description of drawings
Accompanying drawing 1 is one of use schematic diagram of prior art;
Accompanying drawing 2 be prior art the use schematic diagram two;
Accompanying drawing 3 be prior art the use schematic diagram three;
Accompanying drawing 4 is a circuit block diagram of the present utility model;
Accompanying drawing 5 is a circuit diagram of the present utility model;
Accompanying drawing 6 is the circuit diagram of another execution mode.
Embodiment
As shown in Figure 4, power supply (3) connects load (2), diode pressure circuit (11) and switch module (12), and diode pressure circuit (11) connects LED lamp (14) by booster circuit (13).
As shown in Figure 5, a kind of inductive switch (1) that has LED is gone up the diode pressure circuit (11) that series connection both forward and reverse directions diode connected in parallel D1, D2 form at inductive switch (1), is connected in series switch module (12) K again and constitutes major loop.In parallel again by discrete assembly triode Q1, Q2 on the diode pressure circuit (11) of major loop, resistance R 1, R2, the LC concussion booster circuit (13) that capacitor C and inductance L are formed, booster circuit (13) connects driving LED (14).
As shown in Figure 6, a kind of inductive switch (1) that has LED is gone up the diode pressure circuit (11) that series connection both forward and reverse directions diode connected in parallel D1, D2 form at inductive switch (1), is connected in series switch module (12) K again and constitutes major loop.The booster circuit of being made up of ic chip and inductance L (13) in parallel again on the diode pressure circuit (11) of major loop, booster circuit (13) connects driving LED (14).
Claims (4)
1. a twin wire has the low internal pressure drops inductive switch (1) of LED light, it is characterized in that: power supply (3) connects load (2), diode pressure circuit (11) and switch module (12); Diode pressure circuit (11) connects LED (14) by booster circuit (13).
2. a kind of twin wire according to claim 1 has the low internal pressure drops inductive switch (1) of LED light, it is characterized in that: the utilization discrete assembly constitutes LC oscillation step-up circuit (13) in booster circuit (13).
3. a kind of twin wire according to claim 1 has the low internal pressure drops inductive switch (1) of LED light, it is characterized in that: the utilization integrated circuit constitutes integrated package booster circuit (13) in booster circuit (13).
4. a kind of twin wire according to claim 1 has the low internal pressure drops inductive switch (1) of LED light, it is characterized in that: pressure circuit (11) is made up of two both forward and reverse directions diode connected in parallel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200672029U CN201022188Y (en) | 2006-11-07 | 2006-11-07 | A two line low internal voltage reduction induction switch with LED indicator light |
| PCT/CN2007/002709 WO2008055403A1 (en) | 2006-11-07 | 2007-09-13 | A type of two-wire low internal pressure drop sensor switch with led indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200672029U CN201022188Y (en) | 2006-11-07 | 2006-11-07 | A two line low internal voltage reduction induction switch with LED indicator light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201022188Y true CN201022188Y (en) | 2008-02-13 |
Family
ID=39089604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200672029U Expired - Lifetime CN201022188Y (en) | 2006-11-07 | 2006-11-07 | A two line low internal voltage reduction induction switch with LED indicator light |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201022188Y (en) |
| WO (1) | WO2008055403A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1855403A4 (en) * | 2005-03-02 | 2012-02-22 | Fujitsu Ltd | Ofdm communication system and ofdm communication method |
| US11264193B2 (en) * | 2020-04-27 | 2022-03-01 | Hydra-Electric Company | Two wire pressure indicating switch with all electronic architecture with millivolt operating supply |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4625198A (en) * | 1984-08-14 | 1986-11-25 | Self Diagnostic Security Devices, Inc. | Alarm system diagnostic apparatus |
| JP2003269903A (en) * | 2002-03-13 | 2003-09-25 | Omron Corp | Proximity sensor |
| CN1190619C (en) * | 2002-12-09 | 2005-02-23 | 刘鹏程 | Light focusing and boost electric torch |
| CN2745311Y (en) * | 2004-09-29 | 2005-12-07 | 赵晓红 | LED torch |
-
2006
- 2006-11-07 CN CNU2006200672029U patent/CN201022188Y/en not_active Expired - Lifetime
-
2007
- 2007-09-13 WO PCT/CN2007/002709 patent/WO2008055403A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008055403A1 (en) | 2008-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201388310Y (en) | LED constant current drive circuit | |
| CN202404873U (en) | Constant voltage and constant current drive circuit of LED display screen | |
| CN101657056A (en) | Circuit arrangement for operating at least one semiconductor light source | |
| CN102496343A (en) | Luminous diode driving circuit having short-circuit protection function | |
| CN101026917B (en) | Solar LED lamp circuit | |
| CN104661399A (en) | LED constant-current drive circuit based on DC/DC voltage increase-voltage reduction | |
| CN201022188Y (en) | A two line low internal voltage reduction induction switch with LED indicator light | |
| CN203896538U (en) | LED driving power source employing single switch tube and two Buck-Boost circuits in cascade connection | |
| CN202455626U (en) | LED (light emitting diode) spotlight driving power supply | |
| CN204652745U (en) | A kind of constant current driver circuit for LED | |
| CN202663591U (en) | LED (light-emitting diode) resistance-capacitance type driver | |
| CN204168140U (en) | IGBT drive module, motor drive controller and power-driven system | |
| CN2914496Y (en) | Reversed polarity data transmitting device on DC power supply lines | |
| CN202602243U (en) | LED (Light-Emitting Diode) illumination power supply protection circuit | |
| CN203136251U (en) | Intelligently controlled LED light source | |
| CN202931618U (en) | High luminous efficiency double arrow LED vehicle interior lamp circuit device | |
| CN201965888U (en) | LED (Light Emitting Diode) screen driving device | |
| CN202019481U (en) | Driving circuit of low-current high-voltage light emitting diode (LED) lamp | |
| CN202050567U (en) | Current-return-type storage electricity-saving device | |
| CN202444676U (en) | Light-emitting diode (LED) driving control circuit | |
| CN102186280A (en) | Current backflow type storage and power saving device | |
| CN204305432U (en) | LED car lamp drive circuit | |
| CN203840613U (en) | LED circuit | |
| CN203840610U (en) | LED circuit having stand-by power source circuit | |
| CN214338171U (en) | Double-light-source driving control circuit of monitoring camera |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080213 |
|
| EXPY | Termination of patent right or utility model |