CN220023127U - Simple type double-color lamp driving circuit and switching power supply circuit adopting same - Google Patents
Simple type double-color lamp driving circuit and switching power supply circuit adopting same Download PDFInfo
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- CN220023127U CN220023127U CN202321033513.3U CN202321033513U CN220023127U CN 220023127 U CN220023127 U CN 220023127U CN 202321033513 U CN202321033513 U CN 202321033513U CN 220023127 U CN220023127 U CN 220023127U
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Abstract
The utility model discloses a simple bicolor lamp driving circuit and a switch power supply circuit adopting the same, wherein a grid electrode of a MOS tube Q3 is connected with a control signal input end, a source electrode of the MOS tube Q3 is grounded, the grid electrode of the MOS tube Q3 is connected with a positive power supply, the grid electrode of the MOS tube Q3 is connected with a public end of a resistor R51 and a public end of a resistor R52, a base electrode of a triode Q7 is connected with the public end of the resistor R52 and the public end of the resistor R53, an emitter electrode of the triode Q7 is grounded, a collector electrode of the triode Q7 is connected with one end of an electrodeless bicolor LED lamp LED1, a collector electrode of the triode Q7 is connected with a +33V power supply through a resistor R56, a resistor R54, a voltage stabilizing diode ZD3 and a voltage stabilizing diode ZD4 are sequentially connected in series, and the other end of the electrodeless bicolor LED lamp LED1 is connected with a cathode of the voltage stabilizing diode ZD 3.
Description
Technical Field
The utility model discloses a driving circuit, in particular to a simple double-color lamp driving circuit and a switching power supply circuit adopting the same, which can be applied to push rod type power supplies, medical system power supplies or other occasions needing double-color lamps.
Background
At present, the push rod power supply, the medical system power supply and the like which are common in the market have very strict requirements on low power consumption, safe work and the like, so that the part of standby power consumption needs to be specially treated in the power supply in the aspect, for example: when the system, the push rod motor and the like do not work, the power supply is in a standby state, when the system, the push rod motor and the like need to work, an enabling signal (PS-ON) is generated when the hand controller operates, and the motor system can stretch or contract or perform other actions according to the control of the enabling signal.
Based on the above processing procedure, a status indication for clearly distinguishing whether the power supply is in standby or normal working mode is required for the consumer or the operator, so that a dual-color LED is often required to be made on the power supply, and the distinguishing indication is made through the display of LEDs with different colors.
The driving circuit of the double-color LED indicator lamp in the prior art has a complex structure, and is high in design cost and manufacturing cost, so that the overall product cost is high.
Disclosure of Invention
Aiming at the defects of complex structure and high cost of the driving circuit of the bicolor LED indicator lamp in the prior art, the utility model provides a novel simple bicolor lamp driving circuit which controls the energizing current direction of a bicolor LED by using a triode so as to control the display color of the bicolor LED indicator lamp, and the driving circuit has the advantages of simple structure, easy design and lower cost.
The technical scheme adopted for solving the technical problems is as follows: a simple bicolor lamp driving circuit comprises a MOS (metal oxide semiconductor) transistor Q3, a resistor R51, a resistor R52, a resistor R53, a triode Q7, a resistor R56, an electrodeless bicolor LED lamp LED1, a resistor R54, a zener diode ZD3 and a zener diode ZD4, wherein a grid electrode of the MOS transistor Q3 is connected with a control signal input end, a source electrode of the MOS transistor Q3 is grounded, a grid electrode of the MOS transistor Q3 is connected with a positive power supply, the resistor R51, the resistor R52 and the resistor R53 are sequentially connected in series, the resistor R51 is connected with a +33V power supply, the resistor R53 is grounded, the grid electrode of the MOS transistor Q3 is connected with a public end of the resistor R51 and the resistor R52, an emitter electrode of the triode Q7 is grounded, a collector electrode of the triode Q7 is connected with one end of the electrodeless bicolor LED lamp LED1, a collector electrode of the triode Q7 is connected with a +33V power supply through the resistor R56, the resistor R54, the zener diode ZD3 and the zener diode ZD4 are sequentially connected with a positive electrode and a negative electrode of the diode, the resistor R54 is connected with a negative electrode of the bipolar LED 3 and the other end of the bipolar LED is connected with a negative electrode of the bipolar LED 3 and the diode is connected with a negative electrode of the diode 3 and the positive electrode of the diode is connected with the negative electrode of the diode ZD 4.
The switching power supply circuit comprises an AC input interface, an EMI module, a primary rectifying and filtering module, a high-frequency transformation module, a secondary rectifying and filtering module, a power output module, a power management module and a bicolor lamp control circuit, wherein the AC input interface is used for being connected with alternating current 220V mains supply, the AC input interface is connected with the EMI module, the EMI module is connected with the primary rectifying and filtering module, the primary rectifying and filtering module is connected with the high-frequency transformation module, a triode Q2 is connected on a switching signal output interface of the power management module, an emitting electrode of the triode Q2 is connected with a MOS tube Q1, the MOS tube Q1 is connected with the high-frequency transformation module, the secondary rectifying and filtering module is connected with the high-frequency transformation module, the power output module and the bicolor lamp control circuit are respectively connected to an output end of the secondary rectifying and filtering module, and a drain electrode of the MOS tube Q3 in the bicolor lamp control module is connected with an output end of the power output module.
The technical scheme adopted by the utility model for solving the technical problems further comprises the following steps:
the resistor R53 is connected with a capacitor C9 in parallel.
A capacitor C15 is connected between the source electrode and the grid electrode of the MOS tube Q3, and a resistor R65 and a diode ZD2 are connected in parallel with the capacitor C15.
The EMI module include exciting coil LF1, exciting coil LF2, exciting coil LF3 and electric capacity CX1, exciting coil LF2, exciting coil LF3 connect gradually in series connection, electric capacity CX1 connects between exciting coil LF1 and exciting coil LF 2.
The primary rectifying and filtering module comprises a rectifying bridge DB1, a capacitor C1 and a capacitor EC1, wherein the capacitor C1 and the capacitor EC1 are connected in parallel at the output end of the rectifying bridge DB 1.
The power management module adopts a switching power supply chip U1.
The power management module is connected with an output voltage detection feedback module, the output voltage detection feedback module comprises a voltage stabilizing diode ZD1, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a resistor R39, a capacitor C12, a capacitor C13, a photoelectric coupler OC1 and a reference voltage stabilizing chip U2, the voltage stabilizing diode ZD1, the resistor R34, the resistor R35 and the reference voltage stabilizing chip U2 are sequentially connected between a positive power output end of the power management module and the ground in series, the resistor R36 and the resistor R38 are connected between the positive power output end of the power management module and the ground in series, a light emitting diode of the photoelectric coupler OC1 is connected with the resistor R35 in parallel, a phototriode of the photoelectric coupler OC1 is connected with a feedback end of the switch power chip U1 and used for outputting voltage signal feedback, one end of the capacitor C12 is connected with a public end of the resistor R35 and the reference voltage stabilizing chip U2, the other end of the capacitor C12 is connected with a public end of the resistor R36 and the resistor R38, the resistor R39 and the capacitor C13 are connected with the capacitor C13 in series, the serially connected resistor R39 and the capacitor C13 are connected with the capacitor C12 and the public end of the resistor R38 in parallel, and the public end of the resistor R38 is connected with the resistor R38 in parallel.
The voltage dependent resistor MOV is connected across the AC input interface.
And a fuse F1 is connected in series on the live wire input end of the AC input interface.
The beneficial effects of the utility model are as follows: the utility model adopts an electrodeless double-color LED, and compared with the conventional driving circuit in the prior art, the electrodeless double-color LED can save two triodes and some resistors through an optimized simple driving circuit, thereby saving the manufacturing cost of products and improving certain production efficiency.
The utility model will be further described with reference to the drawings and detailed description.
Drawings
Fig. 1 is a block diagram of the circuit of the present utility model.
Fig. 2 is a schematic circuit diagram of a power input part of the present utility model.
FIG. 3 is a schematic circuit diagram of a portion of a power management module according to the present utility model.
Fig. 4 is a schematic circuit diagram of the power output part of the utility model.
Fig. 5 is a schematic circuit diagram of a control portion of the bi-color lamp of the present utility model.
Fig. 6 is a schematic circuit diagram of an output voltage detecting section according to the present utility model.
Detailed Description
This example is a preferred embodiment of the present utility model, and other principles and basic structures are the same as or similar to those of this example, and all fall within the scope of the present utility model.
Referring to fig. 5, the present utility model mainly protects a simple dual-color lamp driving circuit, which mainly includes a MOS transistor Q3, a resistor R51, a resistor R52, a resistor R53, a triode Q7, a resistor R56, an electrodeless dual-color LED lamp LED1, a resistor R54, a zener diode ZD3 and a zener diode ZD4, wherein a gate of the MOS transistor Q3 is connected to a control signal input end (in this embodiment, an enable signal of a hand controller), a source of the MOS transistor Q3 is grounded, a gate of the MOS transistor Q3 is connected to a positive power supply (in this embodiment, an output positive power supply), the resistor R51, the resistor R52 and the resistor R53 are sequentially connected in series, the resistor R51 is connected to a +33v power supply, the resistor R53 is grounded, and a gate of the MOS transistor Q3 is connected to a common end of the resistor R51 and the resistor R52 (in this embodiment, defining this point as point C), the base of the triode Q7 is connected to the common terminal of the resistor R52 and the resistor R53, the emitter of the triode Q7 is grounded, the collector of the triode Q7 is connected to one end of the electrodeless two-color LED lamp LED1 (in this embodiment, this point is defined as point H), the collector of the triode Q7 is connected to the +33v power supply through the resistor R56, the resistor R54, the zener diode ZD3 and the zener diode ZD4 are sequentially connected in series, one end of the resistor R54 is connected to the +33v power supply, the other end of the resistor R54 is connected to the negative electrode of the zener diode ZD3 (in this embodiment, this point is defined as point J), the positive electrode of the zener diode ZD3 is connected to the negative electrode of the zener diode ZD4, the positive electrode of the zener diode ZD4 is grounded, and the other end of the electrodeless two-color LED lamp LED1 is connected to the negative electrode of the zener diode ZD 3.
In this embodiment, a capacitor C9 is connected in parallel with the resistor R53.
In this embodiment, a capacitor C15 is connected between the source and the gate of the MOS transistor Q3, and a resistor R65 and a diode ZD2 are connected in parallel with the capacitor C15.
When the LED lamp is used, the power supply is in an electrified state, when the K point is in a low level and the MOS tube Q3 is not conducted in a standby state, the base voltage of the triode Q7 reaches 0.7V through the voltage division of the resistor R51, the resistor R52 and the resistor R53, the triode Q7 is conducted, at the moment, the collector electrode of the triode Q7 is pulled down to be in a low level, the LED1 of the electrodeless double-color LED lamp is powered by the resistor R54 and the voltage-stabilizing diode ZD3 in a voltage-stabilizing way, a loop is formed by the collector electrode of the triode Q7, a green lamp (namely a G lamp) in the LED1 of the electrodeless double-color LED lamp is lighted, and the LED1 of the electrodeless double-color LED lamp is displayed as green.
When the system and the motor need to work, the hand controller sends an enabling signal to a Power enable port (namely a K point), the enabling signal is connected to a grid electrode of the MOS tube Q3 (namely a driving pin of the MOS tube Q3), the MOS tube Q3 is conducted, a source electrode and a drain electrode of the MOS tube Q3 can be regarded as the same potential, a common node (namely a C point) of the resistor R51 and the resistor R52 is pulled down to a low level by the MOS tube Q3, the triode Q7 is not conducted, the electrodeless two-color LED lamp LED1 is powered through the resistor R56 at the moment, a loop is formed by conducting the voltage of the H point in the circuit to be higher than the voltage of the J point, the voltage stabilizing diode ZD4 is lighted, and the electrodeless two-color LED lamp LED1 is red.
The utility model also protects a switching power supply circuit adopting the double-color lamp driving circuit, which mainly comprises an AC input interface, an EMI module, a primary rectifying and filtering module, a high-frequency transformation module, a secondary rectifying and filtering module, a power output module, a power management module and a double-color lamp control module, wherein the AC input interface is used for being connected with alternating current 220V mains supply and is used for power input, the AC input interface is connected with the EMI module, the EMI module comprises an exciting coil LF1, an exciting coil LF2, an exciting coil LF3 and a capacitor CX1, the exciting coil LF2 and the exciting coil LF3 are sequentially connected in series, the capacitor CX1 is connected between the exciting coil LF1 and the exciting coil LF2, the utility model discloses a switching power supply chip, including the AC input interface, the AC input interface is input to the AC input, the AC input interface is carried out the EMI through the AC input through the EMI module, the EMI module is connected with primary rectification filter module, rectify the alternating current into direct current through primary rectification filter module, in this embodiment, primary rectification filter module includes rectifier bridge DB1, electric capacity C1 and electric capacity EC1 parallel connection are at rectifier bridge DB 1's output, primary rectification filter module is connected with high-frequency transformation module, power management module adopts switching power supply chip U1, in this embodiment, switching power supply chip U1 adopts the chip of model OB5269, during the implementation, also can select the switching power supply chip of other models according to actual need. The switching signal output interface of the switching power supply chip U1 is connected with a triode Q2, the emitting electrode of the triode Q2 is connected with a MOS tube Q1, the MOS tube Q1 is connected with a high-frequency transformation module, a high-frequency signal is provided by the switching power supply chip U1, high-frequency electricity is converted into low-frequency electricity by the high-frequency transformation module, the high-frequency transformation module adopts a transformer T1D, a secondary rectifying and filtering module is connected with the high-frequency transformation module, the secondary rectifying and filtering module adopts a rectifying diode D5 to convert high-frequency alternating current into direct current, the power supply output module and the bicolor lamp control module are respectively connected with the output end of the secondary rectifying and filtering module, the power supply output module adopts an exciting coil LF4 to carry out filtering treatment on the power supply of the output end, and the drain electrode of the MOS tube Q3 in the bicolor lamp control module is connected with the output end of the power supply output module and is used for supplying power to the bicolor lamp control module through the power supply output module.
In this embodiment, the power management module is further connected with an output voltage detection feedback module, where the output voltage detection feedback module includes a zener diode ZD1, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a resistor R39, a capacitor C12, a capacitor C13, a photo-coupler OC1 and a reference voltage stabilizing chip U2, the zener diode ZD1, the resistor R34, the resistor R35 and the reference voltage stabilizing chip U2 are sequentially connected in series between the positive power output terminal of the power management module and the ground, the resistor R36 and the resistor R38 are connected in series between the positive power output terminal of the power management module and the ground, the light emitting diode of the photo-coupler OC1 is connected in parallel with the resistor R35, the photo-triode of the photo-coupler OC1 is connected with the feedback terminal (i.e., FB pin) of the switching power chip U1, one end of the capacitor C12 is connected to the common terminal of the resistor R35 and the reference voltage stabilizing chip U2, the other end of the capacitor C12 is connected to the common terminal of the resistor R36 and the resistor R38, the resistor R39 and the capacitor C13 are connected in series between the resistor R13 and the resistor R13, and the resistor R38 are connected in parallel to the common terminal of the resistor R38.
In this embodiment, the AC input interface is bridged with a varistor MOV for overvoltage protection of the AC input interface.
In this embodiment, a fuse F1 is connected in series to the live wire input end of the AC input interface for overcurrent protection of the AC input interface.
The utility model adopts an electrodeless double-color LED, and compared with the conventional driving circuit in the prior art, the electrodeless double-color LED can save two triodes and some resistors through an optimized simple driving circuit, thereby saving the manufacturing cost of products and improving certain production efficiency.
Claims (10)
1. A simple double-color lamp driving circuit is characterized in that: the driving circuit comprises a MOS (metal oxide semiconductor) tube Q3, a resistor R51, a resistor R52, a resistor R53, a triode Q7, a resistor R56, an electrodeless bicolor LED lamp LED1, a resistor R54, a voltage stabilizing diode ZD3 and a voltage stabilizing diode ZD4, wherein the grid electrode of the MOS tube Q3 is connected with the input end of a control signal, the source electrode of the MOS tube Q3 is grounded, the grid electrode of the MOS tube Q3 is connected with a positive power supply, the resistor R51, the resistor R52 and the resistor R53 are sequentially connected in series, the resistor R51 is connected with a +33V power supply, the resistor R53 is grounded, the grid electrode of the MOS tube Q3 is connected with the public end of the resistor R51 and the resistor R52, the base electrode of the triode Q7 is connected with the public end of the resistor R52, the emitter electrode of the triode Q7 is grounded, the collector electrode of the triode Q7 is connected with one end of the electrodeless bicolor LED lamp LED1, the collector electrode of the triode Q7 is connected with a +33V power supply, one end of the resistor R54 is sequentially connected with the voltage stabilizing diode ZD4 in series, one end of the resistor R54 is connected with the +33V power supply, the other end of the resistor R54 is connected with the anode of the diode ZD3 is connected with the cathode of the bipolar LED 3, and the cathode of the diode ZD4 is connected with the cathode of the LED 3.
2. The simplified bi-color lamp driving circuit according to claim 1, wherein: the resistor R53 is connected with a capacitor C9 in parallel.
3. The simplified bi-color lamp driving circuit according to claim 1, wherein: a capacitor C15 is connected between the source electrode and the grid electrode of the MOS tube Q3, and a resistor R65 and a diode ZD2 are connected in parallel with the capacitor C15.
4. A switching power supply circuit employing the simplified two-color lamp driving circuit as claimed in any one of claims 1 to 3, characterized in that: the switching power supply circuit comprises an AC input interface, an EMI module, a primary rectifying and filtering module, a high-frequency transformation module, a secondary rectifying and filtering module, a power output module, a power management module and a bicolor lamp control circuit, wherein the AC input interface is used for being connected with alternating current 220V mains supply, the AC input interface is connected with the EMI module, the EMI module is connected with the primary rectifying and filtering module, the primary rectifying and filtering module is connected with the high-frequency transformation module, a triode Q2 is connected on a switching signal output interface of the power management module, an emitting electrode of the triode Q2 is connected with a MOS tube Q1, the MOS tube Q1 is connected with the high-frequency transformation module, the secondary rectifying and filtering module is connected with the high-frequency transformation module, the power output module and the bicolor lamp control circuit are respectively connected to an output end of the secondary rectifying and filtering module, and a drain electrode of the MOS tube Q3 in the bicolor lamp control module is connected with an output end of the power output module.
5. The switching power supply circuit according to claim 4, wherein: the EMI module include exciting coil LF1, exciting coil LF2, exciting coil LF3 and electric capacity CX1, exciting coil LF2, exciting coil LF3 connect gradually in series connection, electric capacity CX1 connects between exciting coil LF1 and exciting coil LF 2.
6. The switching power supply circuit according to claim 4, wherein: the primary rectifying and filtering module comprises a rectifying bridge DB1, a capacitor C1 and a capacitor EC1, wherein the capacitor C1 and the capacitor EC1 are connected in parallel at the output end of the rectifying bridge DB 1.
7. The switching power supply circuit according to claim 4, wherein: the power management module adopts a switching power supply chip U1.
8. The switching power supply circuit according to claim 4, wherein: the power management module is connected with an output voltage detection feedback module, the output voltage detection feedback module comprises a voltage stabilizing diode ZD1, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a resistor R39, a capacitor C12, a capacitor C13, a photoelectric coupler OC1 and a reference voltage stabilizing chip U2, the voltage stabilizing diode ZD1, the resistor R34, the resistor R35 and the reference voltage stabilizing chip U2 are sequentially connected between a positive power output end of the power management module and the ground in series, the resistor R36 and the resistor R38 are connected between the positive power output end of the power management module and the ground in series, a light emitting diode of the photoelectric coupler OC1 is connected with the resistor R35 in parallel, a phototriode of the photoelectric coupler OC1 is connected with a feedback end of the switch power chip U1 and used for outputting voltage signal feedback, one end of the capacitor C12 is connected with a public end of the resistor R35 and the reference voltage stabilizing chip U2, the other end of the capacitor C12 is connected with a public end of the resistor R36 and the resistor R38, the resistor R39 and the capacitor C13 are connected with the capacitor C13 in series, the serially connected resistor R39 and the capacitor C13 are connected with the capacitor C12 and the public end of the resistor R38 in parallel, and the public end of the resistor R38 is connected with the resistor R38 in parallel.
9. The switching power supply circuit according to claim 4, wherein: the voltage dependent resistor MOV is connected across the AC input interface.
10. The switching power supply circuit according to claim 4, wherein: and a fuse F1 is connected in series on the live wire input end of the AC input interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321033513.3U CN220023127U (en) | 2023-05-04 | 2023-05-04 | Simple type double-color lamp driving circuit and switching power supply circuit adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321033513.3U CN220023127U (en) | 2023-05-04 | 2023-05-04 | Simple type double-color lamp driving circuit and switching power supply circuit adopting same |
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| Publication Number | Publication Date |
|---|---|
| CN220023127U true CN220023127U (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321033513.3U Active CN220023127U (en) | 2023-05-04 | 2023-05-04 | Simple type double-color lamp driving circuit and switching power supply circuit adopting same |
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| Country | Link |
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| CN (1) | CN220023127U (en) |
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2023
- 2023-05-04 CN CN202321033513.3U patent/CN220023127U/en active Active
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