Opple Lighting Patente

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Provided in the present disclosure are a drive circuit, a drive controller, and a lamp. The drive circuit comprises a load module, an energy storage module, a constant-current control module and a sampling signal module, wherein the load module comprises a first load and a second load, which are connected to a power supply module; the energy storage module is connected to the first load, the power supply module charges the energy storage module, and the energy storage module can supply power to the load module; the constant-current control module comprises a first control unit and a fourth control unit, which are connected to the second load in parallel, and a second control unit and a third control unit, which are connected to the second load in series; and the sampling signal module comprises a diode D1 and a sampling module, which are arranged between the power supply module and the energy storage module, the sampling module sampling an output voltage of the power supply module and controlling the connection or disconnection of the first control unit, the second control unit, the third control unit and the fourth control unit. In the present disclosure, an energy storage module and a constant-current control module are configured, such that a load can realize constant-current output when a voltage fluctuation is relatively large, thereby avoiding stroboflash of a lamp bead during the voltage fluctuation.

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The present application provides a constant current drive circuit, a constant current control system, and a lamp. The constant current drive circuit includes a load module, a start-stop module for controlling the start and stop of the load module, an energy storage module, and a rectifier module for controlling the current angle and current magnitude of the load module circuit. The energy storage module can charge when the load module is input with a high voltage and discharge when the load module is input with a low voltage. The rectifier module includes a resistor R1, a first compensation circuit, a first reference circuit, a first comparator, and a field-effect transistor M1 connected in sequence, the drain electrode and the source electrode of the field-effect transistor M1 are respectively connected to the energy storage module and the resistor R3. The output terminal of the resistor R3 is connected to the output terminal of the load module and grounded, and the current peak value of the energy storage module is controlled through the resistor R3. In the present application, by adjusting the resistance value of the resistor R1, the on or off time of the field-effect transistor M1 is changed to adjust the phase angle of the electrolytic capacitor E1; by adjusting the resistance value of the resistor R3, the current peak value of the electrolytic capacitor E1 is further adjusted.

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Provided in the present application are a fixing structure and a lamp. The fixing structure is adapted to fix a power cord, and comprises: a cover, wherein a cord through hole is formed in the cover; and a shell which is received in the cover, wherein a cord through channel is formed in the shell corresponding to the cord through hole, and the cord through hole and the cord through channel are adapted to pass through a fitting part of the power cord; a fixing part is formed between the shell and the cover and is configured to accommodate a retaining part of the power cord, and the retaining part is arranged on the fitting part and protrudes relative to the fitting part in the circumferential direction of the power cord; and the cord through hole and the cord through channel are formed on the upper and lower sides of the fixing part respectively, and the orthographic projection of the fixing part extends beyond both the orthographic projection range of the cord through hole and the orthographic projection range of the cord through channel so as to limit and fix the retaining part in the fixing part through the cord through channel and the cord through hole. The fixing structure in the present application has a simple structure and is convenient for a cord to pass through, can firmly fix a power cord, and can meet the push-pull resistance requirements of safety compliance.

The present application relates to the technical field of circuits. Provided are a power carrier circuit and a lighting device. A carrier modulates a carrier signal into an alternating current of a first power source line, so as to obtain an alternating-current carrier control signal; a rectifier converts into a direct current the alternating-current carrier control signal transmitted by the first power source line, so as to obtain a first direct-current signal; a first coupler is used for filtering out a direct-current signal and a low-frequency signal in the alternating-current carrier control signal, and retaining a high-frequency signal in the alternating-current carrier control signal, so as to obtain a target carrier signal, wherein the target carrier signal and the first direct-current signal are modulated in a second power source line, so as to obtain a direct-current power source carrier signal; a second coupler is used for performing coupling on the direct-current power source carrier signal to obtain the target carrier signal, and transmitting the target carrier signal to a lighting module; and the lighting module draws power by means of the direct-current power source carrier signal and operates according to the target carrier signal. Four-wire transmission is not required, and thus the use of wires can be effectively reduced.

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The present application provides a constant current drive circuit, a circuit input power calculation method, and a lamp. The constant current drive circuit comprises: a constant voltage module, converting an external alternating current into a direct current of a constant voltage, an output negative end of the constant voltage module being connected to a first resistor; a constant current module, being connected to the constant voltage module, and converting the direct current of the constant voltage into a direct current of a constant current; an operational amplifier detection module, detecting the voltage of the first resistor; and a control module, the control module being connected to an output positive end of the constant voltage module, and detecting an output voltage of the constant voltage module, the control module being also connected to the operational amplifier detection module, and an output end of the control module being connected to the constant current module and being configured to output a signal to the constant current module. The operational amplifier detection module is used to amplify the detected voltage of the first resistor by means of a preset amplification factor and then output the amplified voltage to the control module, and the control module can calculate input power of the constant current drive circuit according to the detected output voltage of the constant voltage module and the voltage of the first resistor.