CN216057552U

CN216057552U - Light-adjusting and color-temperature-adjusting phase-cut light-adjusting power supply

Info

Publication number: CN216057552U
Application number: CN202122610875.1U
Authority: CN
Inventors: 郑德华; 赵显云
Original assignee: Zhuhai Shengchang Electronics Co ltd
Current assignee: Zhuhai Shengchang Electronics Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-03-15
Anticipated expiration: 2031-10-28

Abstract

The utility model discloses a light and color temperature adjusting phase-cut light adjusting power supply, and aims to provide a light and color temperature adjusting phase-cut light adjusting power supply which has the advantages of multi-path light adjustment, color temperature adjusting function, simple circuit and lower cost. The utility model comprises an electromagnetic filter circuit, a switching power supply circuit, a phase-cut dimming signal conversion circuit, a singlechip control circuit and an electronic switching circuit; the input of the switching power supply circuit and the input of the phase-cut dimming signal conversion circuit are electrically connected with the output of the electromagnetic filter circuit, the output of the switching power supply circuit is electrically connected with the input of the lamp, the output of the phase-cut dimming signal conversion circuit is connected with the input of the single chip microcomputer control circuit, and the output of the single chip microcomputer control circuit is electrically connected with the output of the lamp through the electronic switching circuit. The utility model is applied to the technical field of light-adjusting, color-temperature-adjusting, phase-cutting and light-adjusting power supplies.

Description

Light-adjusting and color-temperature-adjusting phase-cut light-adjusting power supply

Technical Field

The utility model relates to the field of dimming power supplies, in particular to a dimming, color temperature regulating and phase-cut dimming power supply.

Background

Most of the existing phase-cut dimming power supplies are single-path dimming and do not have a color temperature adjusting function, and some phase-cut dimming power supplies with color temperature adjusting function are provided, but the circuits are complex, a front-stage single chip microcomputer is required to collect signals and then convert the signals into PWM signals to be provided for a secondary single chip microcomputer processing circuit, the circuits are not complex, the cost is high, and the reliability is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides the light-modulating, color-modulating, phase-cutting and light-modulating power supply which has the advantages of multi-path light modulation, color temperature modulation function, simple circuit and lower cost.

The technical scheme adopted by the utility model is as follows: the utility model comprises an electromagnetic filter circuit, a switching power supply circuit, a phase-cut dimming signal conversion circuit, a singlechip control circuit and an electronic switching circuit; the input end of the switching power supply circuit and the input end of the phase-cut dimming signal conversion circuit are both electrically connected with the output end of the electromagnetic filter circuit, the output end of the switching power supply circuit is electrically connected with the input end of the lamp, the output end of the phase-cut dimming signal conversion circuit is connected with the input end of the single chip microcomputer control circuit, and the output end of the single chip microcomputer control circuit is electrically connected with the output end of the lamp through the electronic switching circuit; the dimming, color temperature and phase-cut dimming power supply receives alternating current chopped by a phase-cut dimmer, one path of the alternating current is input to the switching power supply circuit after passing through the electromagnetic filter circuit, the other path of the alternating current is input to the phase-cut dimming signal conversion circuit, the switching power supply circuit provides energy for the lamp and supplies power to all circuits, the phase-cut dimming signal conversion circuit converts a phase-cut dimming signal into a PWM (pulse width modulation) signal and then inputs the PWM signal to the single chip microcomputer control circuit, the single chip microcomputer control circuit detects the input signal in real time, and the signal is processed by the single chip microcomputer control circuit and then outputs a dimming signal to the electronic switch circuit so as to control the switching time of the electronic switch circuit.

Further, the phase-cut dimming signal conversion circuit comprises a first diode, a second diode, a first resistor, a second resistor, a third resistor, a triode and an optocoupler; the positive pole of first diode with the positive pole of second diode respectively with two output of electromagnetic filter circuit are connected, the negative pole of first diode with the negative pole of second diode connect the back with the one end of first resistance is connected, the other end of first resistance with the base of triode is connected, the collecting electrode of triode with the projecting pole negative pole of opto-coupler is connected, the projecting pole positive pole of opto-coupler passes through the third resistance is pulled up at supply voltage, two output of opto-coupler receiving terminal with single chip microcomputer control circuit connects, the one end of second resistance with the projecting pole of triode all inserts the protection ground, the other end of second resistance with the base of triode is connected.

Further, the electronic switch circuit comprises a first MOS tube and a second MOS tube, the grid electrode of the first MOS tube and the grid electrode of the second MOS tube are connected with the single chip microcomputer control circuit, the source electrode of the first MOS tube and the source electrode of the second MOS tube are grounded, the lamp comprises a first LED lamp and a second LED lamp, the drain electrode of the first MOS tube and the drain electrode of the second MOS tube are respectively connected with the cathode of the first LED lamp and the cathode of the second LED lamp, and the anode of the first LED lamp and the anode of the second LED lamp are both connected with the anode of the power output end of the switch power supply circuit.

Further, the negative electrode of the power output end of the switching power supply circuit is grounded.

The utility model has the beneficial effects that: the utility model receives the alternating current chopped by the phase-cut dimmer, one path of the alternating current is input into the switch power supply circuit after passing through the electromagnetic filter circuit, the other path of the alternating current is input into the phase-cut dimming signal conversion circuit, the switch power supply circuit provides energy for the lamp and also supplies power for each circuit, the phase-cut dimming signal conversion circuit converts a phase-cut dimming signal into a PWM signal and then inputs the PWM signal into the singlechip control circuit, the singlechip control circuit detects the input signal in real time, the signal is processed by the singlechip control circuit and then outputs a dimming signal to the electronic switch circuit, and further the switching time of the electronic switch circuit is controlled, so that the effect of dimming or color temperature adjustment is achieved.

Drawings

Fig. 1 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, in this embodiment, the present invention includes an electromagnetic filter circuit 101, a switching power supply circuit 102, a phase-cut dimming signal conversion circuit 103, a single-chip microcomputer control circuit 104, and an electronic switching circuit 105; the input end of the switching power supply circuit 102 and the input end of the phase-cut dimming signal conversion circuit 103 are electrically connected with the output end of the electromagnetic filter circuit 101, the output end of the switching power supply circuit 102 is electrically connected with the input end of the lamp 2, the output end of the phase-cut dimming signal conversion circuit 103 is connected with the input end of the single chip microcomputer control circuit 104, the output end of the single chip microcomputer control circuit 104 is electrically connected with the output end of the lamp 2 through the electronic switching circuit 105, and the single chip microcomputer control circuit 104 can adopt a general MCU.

In this embodiment, the phase-cut dimming signal conversion circuit 103 includes a first diode D1, a second diode D2, a first resistor R1, a second resistor R2, a third resistor R3, a triode Q1, and an optocoupler U1; the anode of the first diode D1 and the anode of the second diode D2 are respectively connected with two output ends of the electromagnetic filter circuit 101, the cathode of the first diode D1 and the cathode of the second diode D2 are connected with one end of the first resistor R1, the other end of the first resistor R1 is connected with the base of the triode Q1, the collector of the triode Q1 is connected with the cathode of the emitter of the optocoupler U1, the anode of the emitter of the optocoupler U1 is pulled up at a power supply voltage through the third resistor R3, two output ends of the receiving end of the optocoupler U1 are connected with the single chip microcomputer control circuit 104, one end of the second resistor R2 and the emitter of the triode Q1 are both connected to a ground protection GNS, and the other end of the second resistor R2 is connected with the base of the triode Q1.

In this embodiment, the electronic switch circuit 105 includes a first MOS transistor Q2 and a second MOS transistor Q3, the gate of the first MOS transistor Q2 and the gate of the second MOS transistor Q3 are both connected to the single chip microcomputer control circuit 104, the source of the first MOS transistor Q2 and the source of the second MOS transistor Q3 are both grounded GND, the lighting fixture 2 includes a first LED lamp LED1 and a second LED lamp LED2, the drain of the first MOS transistor Q2 and the drain of the second MOS transistor Q3 are respectively connected to the cathode of the first LED lamp LED1 and the cathode of the second LED lamp LED2, and the anode of the first LED lamp LED1 and the anode of the second LED lamp LED2 are both connected to the positive electrode of the power output terminal of the switching power supply circuit 102.

In the present embodiment, the negative electrode of the power output terminal of the switching power supply circuit 102 is grounded to GND.

The working principle of the utility model is as follows: according to the utility model, after the alternating current chopped by the phase-cut dimmer passes through the electromagnetic filter circuit 101, one path of the alternating current is input into the switch power supply circuit 102, the other path of the alternating current is input into the phase-cut dimming signal conversion circuit 103, the switch power supply circuit 102 supplies energy to the lamp 2 and also supplies power to each circuit, the phase-cut dimming signal conversion circuit 103 converts a phase-cut dimming signal into a PWM signal and then inputs the PWM signal into the single chip microcomputer control circuit 104, the single chip microcomputer control circuit 104 detects the input signal in real time, the signal is processed by the single chip microcomputer control circuit 104 and then outputs a dimming signal to the electronic switch circuit 105, and the switching time of the electronic switch circuit 105 is controlled, so that the dimming or color temperature adjusting effect is achieved.

While the embodiments of the present invention have been described in terms of practical embodiments, they are not to be construed as limiting the meaning of the present invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present description.

Claims

1. The utility model provides a cut looks dimming power supply of mixing of colors temperature of adjusting luminance which characterized in that: the dimming, color temperature regulating and phase-cut dimming power supply (1) comprises an electromagnetic filter circuit (101), a switching power supply circuit (102), a phase-cut dimming signal conversion circuit (103), a single chip microcomputer control circuit (104) and an electronic switching circuit (105); the input end of the switching power supply circuit (102) and the input end of the phase-cut dimming signal conversion circuit (103) are both electrically connected with the output end of the electromagnetic filter circuit (101), the output end of the switching power supply circuit (102) is electrically connected with the input end of the lamp (2), the output end of the phase-cut dimming signal conversion circuit (103) is connected with the input end of the single chip microcomputer control circuit (104), and the output end of the single chip microcomputer control circuit (104) is electrically connected with the output end of the lamp (2) through the electronic switching circuit (105); the dimming, color temperature and phase-cut dimming power supply (1) receives alternating current chopped by a phase-cut dimmer, after passing through the electromagnetic filter circuit (101), one path of the alternating current is input into the switching power supply circuit (102), the other path of the alternating current is input into the phase-cut dimming signal conversion circuit (103), the switching power supply circuit (102) provides energy for the lamp (2) and also supplies power for each circuit, the phase-cut dimming signal conversion circuit (103) converts a phase-cut dimming signal into a PWM signal and then inputs the PWM signal into the single chip microcomputer control circuit (104), the single chip microcomputer control circuit (104) detects the input signal in real time, and the signal is processed by the single chip microcomputer control circuit (104) and then outputs a dimming signal to the electronic switch circuit (105), so that the switching time of the electronic switch circuit (105) is controlled.

2. A dimming, color temperature and phase-cut dimming power supply according to claim 1, wherein: the phase-cut dimming signal conversion circuit (103) comprises a first diode (D1), a second diode (D2), a first resistor (R1), a second resistor (R2), a third resistor (R3), a triode (Q1) and an optical coupler (U1); the anode of the first diode (D1) and the anode of the second diode (D2) are respectively connected with two output ends of the electromagnetic filter circuit (101), the cathode of the first diode (D1) and the cathode of the second diode (D2) are connected and then connected with one end of the first resistor (R1), the other end of the first resistor (R1) is connected with the base of the triode (Q1), the collector of the triode (Q1) is connected with the cathode of the emitter of the optocoupler (U1), the emitter positive pole of the optical coupler (U1) is pulled up to a supply voltage through the third resistor (R3), two output ends of the receiving end of the optical coupler (U1) are connected with the singlechip control circuit (104), one end of the second resistor (R2) and the emitter of the triode (Q1) are connected to a protective Ground (GNS), the other end of the second resistor (R2) is connected with the base of the triode (Q1).

3. A dimming, color temperature and phase-cut dimming power supply according to claim 1, wherein: the electronic switch circuit (105) comprises a first MOS tube (Q2) and a second MOS tube (Q3), the grid of the first MOS tube (Q2) and the grid of the second MOS tube (Q3) are both connected with the single chip microcomputer control circuit (104), the source of the first MOS tube (Q2) and the source of the second MOS tube (Q3) are both Grounded (GND), the lamp (2) comprises a first LED lamp (LED 1) and a second LED lamp (LED 2), the drain of the first MOS tube (Q2) and the drain of the second MOS tube (Q3) are respectively connected with the cathode of the first LED lamp (LED 1) and the cathode of the second LED lamp (LED 2), and the anode of the first LED lamp (LED 1) and the anode of the second LED lamp (LED 2) are both connected with the positive pole of the power output end of the switch power supply circuit (102).

4. A dimming, color temperature and phase-cut dimming power supply according to claim 3, wherein: the negative pole of the power output end of the switching power supply circuit (102) is Grounded (GND).