CN218634352U - Low-voltage lighting power supply circuit - Google Patents
Low-voltage lighting power supply circuit Download PDFInfo
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- CN218634352U CN218634352U CN202222789093.3U CN202222789093U CN218634352U CN 218634352 U CN218634352 U CN 218634352U CN 202222789093 U CN202222789093 U CN 202222789093U CN 218634352 U CN218634352 U CN 218634352U
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Abstract
The utility model discloses a low pressure illumination supply circuit relates to the illumination field, and this low pressure illumination supply circuit includes: the power supply switch module is used for controlling whether to supply power to the voltage stabilizing module; the voltage stabilizing module is used for outputting stable direct current voltage to be supplied to the lighting light-emitting module; the lighting and light-emitting module is used for converting direct current into alternating current to drive a lighting lamp to emit light; the brightness adjusting module is used for adjusting the voltage output to the voltage stabilizing module by the voltage stabilizing module; the power supply switch module connects voltage stabilizing module, and voltage stabilizing module connects illumination light emitting module, brightness control module, compares with prior art, the beneficial effects of the utility model are that: the utility model discloses a voltage size that the voltage stabilizing module output was given illumination light emitting module is adjusted to adjustting of the lighteness module to this driving voltage who changes the light changes the luminous luminance of light, and the adjustting of the lighteness module passes through the PWM signal pressure regulating simple and practical, and is efficient.
Description
Technical Field
The utility model relates to the field of lighting, specifically a low pressure illumination supply circuit.
Background
The standard lighting voltage is 220V ac. Depending on the particular engineering requirements, it is possible to use 127V ac or 36V dc, or other lamps with a voltage level lower than the standard lighting voltage, called low voltage lamps. The LED lamp is widely applied to the fields of mobile equipment illumination, household appliance auxiliary illumination, illumination of special occasions such as industrial and mining and the like.
The existing brightness adjustment of low-voltage lamp illumination is often adjusted by a voltage stabilizer, and the defects of the existing brightness adjustment are that the conversion rate is not high due to the use of the voltage stabilizer, the power consumption is too much when the low-voltage lamp is used, and if the low-voltage lamp is powered by a battery, the single service life is shorter, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low pressure illumination supply circuit to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a low voltage lighting supply circuit comprising:
the power supply switch module is used for controlling whether to supply power to the voltage stabilizing module;
the voltage stabilizing module is used for outputting stable direct current voltage to supply to the lighting light-emitting module;
the lighting and light-emitting module is used for converting direct current into alternating current to drive a lighting lamp to emit light;
the brightness adjusting module is used for adjusting the voltage output to the voltage stabilizing module by the voltage stabilizing module;
the power supply switch module is connected with the voltage stabilizing module, and the voltage stabilizing module is connected with the illumination light-emitting module and the brightness adjusting module.
As the utility model discloses further scheme again: the power supply switch module comprises a power supply VCC and a switch S1, one end of the power supply VCC is connected with one end of the switch S1, and the other end of the switch S1 is connected with the voltage stabilizing module.
As the utility model discloses further scheme again: the voltage stabilizing module comprises a resistor R1, a resistor R2, a resistor R3, a triode V1, a capacitor C1, one end of the resistor R1 is connected with one end of the resistor R2, a collector of the triode V1, a power supply switch module, the other end of the resistor R1 is connected with a base of the triode V1, one end of the capacitor C1, the other end of the emitter of the triode V1 is connected with the other end of the resistor R2, one end of the resistor R3, the other end of the resistor R3 is connected with the other end of the capacitor C1, an illumination light-emitting module and a brightness adjusting module.
As a further aspect of the present invention: the illumination light-emitting module comprises an inductor L1, a transformer W, a resistor R4, a resistor R5, a capacitor C3, a capacitor C4, a triode V3, a triode V4, and a lighting lamp X, wherein one end of the inductor L1 is connected with a voltage stabilizing module, the other end of the inductor L1 is connected with the first end of the input end of the transformer W, the second end of the input end of the transformer W is connected with one end of the resistor R4, the base electrode of the triode V4, one end of the capacitor C3, the third end of the input end of the transformer W is connected with one end of the resistor R5, the base electrode of the triode V3, the other end of the capacitor C3, the other end of the resistor R4 is connected with the other end of the resistor R5, the collector electrode of the triode V4, the emitter electrode of the triode V3, the collector electrode of the triode V3 is grounded, one end of the output end of the transformer W is connected with one end of the capacitor C4, and the other end of the lighting lamp X is connected with the other end of the capacitor C4.
As a further aspect of the present invention: the brightness adjusting module comprises an MOS tube V2, a diode D1 and a capacitor C2, the D pole of the MOS tube V2 is connected with one end of the capacitor C2 and the voltage stabilizing module, the other end of the capacitor C2 is grounded, the S pole of the MOS tube V2 is connected with the anode of the diode D1, the cathode of the diode D1 is grounded, and the G pole of the MOS tube V2 is connected with a PWM signal.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a voltage size that the voltage stabilizing module output was given illumination light emitting module is adjusted to adjustting of the lighteness module to this driving voltage who changes the light changes the luminous luminance of light, and the adjustting of the lighteness module passes through the PWM signal pressure regulating simple and practical, and is efficient.
Drawings
Fig. 1 is a schematic diagram of a low voltage lighting power supply circuit.
Fig. 2 is a circuit diagram of a low voltage lighting power supply circuit.
Fig. 3 is a pin diagram of a MOS transistor.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, a low voltage lighting power supply circuit includes:
the power supply switch module is used for controlling whether to supply power to the voltage stabilizing module;
the voltage stabilizing module is used for outputting stable direct current voltage to be supplied to the lighting light-emitting module;
the lighting and light-emitting module is used for converting direct current into alternating current to drive a lighting lamp to emit light;
the brightness adjusting module is used for adjusting the voltage output to the voltage stabilizing module by the voltage stabilizing module;
the power supply switch module is connected with the voltage stabilizing module, and the voltage stabilizing module is connected with the illumination light-emitting module and the brightness adjusting module.
In this embodiment: referring to fig. 2, the power supply switch module includes a power supply VCC and a switch S1, one end of the power supply VCC is connected to one end of the switch S1, and the other end of the switch S1 is connected to the voltage stabilizing module.
The power supply VCC supplies a dc voltage, and the switch S1 is a circuit master switch and supplies a voltage after being pressed.
In this embodiment: referring to fig. 2, the voltage stabilizing module includes a resistor R1, a resistor R2, a resistor R3, a transistor V1, and a capacitor C1, one end of the resistor R1 is connected to one end of the resistor R2, a collector of the transistor V1, and a power supply switch module, the other end of the resistor R1 is connected to a base of the transistor V1 and one end of the capacitor C1, an emitter of the transistor V1 is connected to the other end of the resistor R2 and one end of the resistor R3, and the other end of the resistor R3 is connected to the other end of the capacitor C1, the illumination and light emitting module, and the brightness adjusting module.
The direct current of power supply switch module output passes through triode V1's collecting electrode, resistance R1, resistance R2 output, and the voltage on the resistance R2 is triode V1's pressure drop, and the current control triode V1's collecting electrode voltage size on the resistance R1 changes triode V1's conducting state, consequently, after the current input, triode V1's projecting pole output steady voltage, the power supply for the illumination light emitting module through resistance R3.
In this embodiment: referring to fig. 2, the lighting and light emitting module includes an inductor L1, a transformer W, a resistor R4, a resistor R5, a capacitor C3, a capacitor C4, a transistor V3, a transistor V4, and a lighting lamp X, one end of the inductor L1 is connected to the voltage stabilizing module, the other end of the inductor L1 is connected to the first end of the input end of the transformer W, the second end of the input end of the transformer W is connected to one end of the resistor R4, the base of the transistor V4, one end of the capacitor C3, the third end of the input end of the transformer W is connected to one end of the resistor R5, the base of the transistor V3, the other end of the capacitor C3, the other end of the resistor R4 is connected to the other end of the resistor R5, the collector of the transistor V4, the emitter of the transistor V3, the emitter of the transistor V4 is grounded, the collector of the transistor V3 is grounded, one end of the output end of the transformer W is connected to one end of the capacitor C4, the other end of the lighting lamp X is connected to the other end of the capacitor C4.
Voltage is input to transformer W's input through inductance L1, charge for electric capacity C3, electric capacity C3 voltage is higher, stop to charge for it, electric capacity C3 begins to discharge, because electric capacity C3 charges and discharges, control triode V3, triode V4 switches on the situation, and then make triode V1, triode V2 switch on the state change, transformer W's input produces frequency signal (alternating current signal), make transformer W's output frequency signal, for light X power supply, light work is luminous.
In this embodiment: referring to fig. 2 and 3, the brightness adjustment module includes an MOS transistor V2, a diode D1, and a capacitor C2, a D pole of the MOS transistor V2 is connected to one end of the capacitor C2 and the voltage stabilization module, the other end of the capacitor C2 is grounded, an S pole of the MOS transistor V2 is connected to an anode of the diode D1, a cathode of the diode D1 is grounded, and a G pole of the MOS transistor V2 is connected to the PWM signal.
The MOS tube V2 is an NMOS tube and is conducted when the G-pole voltage is high level. The on-state frequency of the MOS tube V2 is changed by changing the duty ratio of the PWM signal output to the MOS tube V2, and when the MOS tube V2 is on, because the impedances of the MOS tube V2 and the diode D1 are small, the output voltage of the voltage stabilizing module is grounded through the MOS tube V2 and the diode D1, and the power supply for the brightness adjusting module is stopped. For example, the voltage stabilizing module outputs 12V voltage, the MOS transistor V2 has a unit on time of 50%, so that the voltage stabilizing module outputs 12V voltage in one half of the unit time and is grounded through the MOS transistor V2 and the diode D1, and does not supply power to the illumination light emitting module, and outputs 12V voltage in the other half of the unit time to the illumination light emitting module, and after being filtered by the capacitor C2, the voltage stabilizing module outputs 6V voltage in the unit time to the illumination light emitting module, so that the on state of the MOS transistor V2 is changed by controlling the duty ratio of the PWM signal, the input voltage of the illumination light emitting module is changed, and the brightness of the illumination lamp X is changed; meanwhile, the output current of the voltage stabilizing module flows to at least one (when the MOS tube V2 is switched on, two are the lighting light-emitting module and the brightness adjusting module, and when the MOS tube V2 is switched off, only the lighting light-emitting module is used), so that when the MOS tube V2 is switched off, the current exists in the output direction, and the generation of large current is avoided.
The utility model discloses a theory of operation is: the power supply switch module controls whether to supply power to the voltage stabilizing module, the voltage stabilizing module outputs stable direct current voltage to the illumination light-emitting module, the illumination light-emitting module converts direct current into alternating current to drive the illumination lamp to emit light, and the brightness adjusting module adjusts the voltage output by the voltage stabilizing module to the voltage stabilizing module.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A low voltage lighting power supply circuit, characterized by:
this low pressure illumination supply circuit includes:
the power supply switch module is used for controlling whether to supply power to the voltage stabilizing module;
the voltage stabilizing module is used for outputting stable direct current voltage to be supplied to the lighting light-emitting module;
the lighting light-emitting module is used for converting direct current into alternating current to drive a lighting lamp to emit light;
the brightness adjusting module is used for adjusting the voltage output to the voltage stabilizing module by the voltage stabilizing module;
the power supply switch module is connected with the voltage stabilizing module, and the voltage stabilizing module is connected with the illumination light-emitting module and the brightness adjusting module.
2. The low-voltage lighting power supply circuit according to claim 1, wherein the power supply switch module comprises a power supply VCC and a switch S1, one end of the power supply VCC is connected to one end of the switch S1, and the other end of the switch S1 is connected to the voltage stabilizing module.
3. The low-voltage lighting power supply circuit according to claim 1, wherein the voltage stabilizing module comprises a resistor R1, a resistor R2, a resistor R3, a triode V1 and a capacitor C1, one end of the resistor R1 is connected with one end of the resistor R2, a collector of the triode V1 and the power supply switch module, the other end of the resistor R1 is connected with a base of the triode V1 and one end of the capacitor C1, an emitter of the triode V1 is connected with the other end of the resistor R2 and one end of the resistor R3, and the other end of the resistor R3 is connected with the other end of the capacitor C1, the lighting module and the brightness adjusting module.
4. The low voltage lighting power supply circuit according to claim 1, wherein the lighting module comprises an inductor L1, a transformer W, a resistor R4, a resistor R5, a capacitor C3, a capacitor C4, a transistor V3, a transistor V4, and a lighting lamp X, one end of the inductor L1 is connected to the voltage stabilizing module, the other end of the inductor L1 is connected to the first input end of the transformer W, the second input end of the transformer W is connected to one end of the resistor R4, the base of the transistor V4, and one end of the capacitor C3, the third input end of the transformer W is connected to one end of the resistor R5, the base of the transistor V3, and the other end of the capacitor C3, the other end of the resistor R4 is connected to the other end of the resistor R5, the collector of the transistor V4, the emitter of the transistor V3, and the emitter of the transistor V4, the collector of the transistor V3 is grounded, one output end of the transformer W is connected to one end of the capacitor C4, the other output end of the transformer W is connected to one end of the lighting lamp X, and the other end of the lighting lamp X is connected to the other end of the capacitor C4.
5. The low-voltage lighting power supply circuit according to claim 1 or 4, wherein the brightness adjusting module comprises a MOS transistor V2, a diode D1 and a capacitor C2, a D pole of the MOS transistor V2 is connected with one end of the capacitor C2 and the voltage stabilizing module, the other end of the capacitor C2 is grounded, an S pole of the MOS transistor V2 is connected with an anode of the diode D1, a cathode of the diode D1 is grounded, and a G pole of the MOS transistor V2 is connected with the PWM signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222789093.3U CN218634352U (en) | 2022-10-21 | 2022-10-21 | Low-voltage lighting power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222789093.3U CN218634352U (en) | 2022-10-21 | 2022-10-21 | Low-voltage lighting power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218634352U true CN218634352U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222789093.3U Active CN218634352U (en) | 2022-10-21 | 2022-10-21 | Low-voltage lighting power supply circuit |
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| Country | Link |
|---|---|
| CN (1) | CN218634352U (en) |
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2022
- 2022-10-21 CN CN202222789093.3U patent/CN218634352U/en active Active
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