Driving circuit and lamp

Abstract

The embodiment of the invention discloses a driving circuit, which comprises a power supply module, a control module, a feedback module, a voltage division module and a load module, wherein the power supply module is connected with the control module, the control module is respectively connected with the feedback module and the voltage division module, the voltage division module is respectively connected with the load module and the feedback module, when the control module detects triggering signals sent by the feedback module, the ratio of the charging time to the discharging time of the voltage division module is regulated, and the voltage division proportion of the voltage division module and the load module is controlled for regulating the voltage value of the load module to be corresponding to the triggering signals. The circuit has the advantages that the voltage division proportion of the voltage module and the load module can be controlled according to the concrete load condition, so that the goal of regulating the voltage value at the two ends of the load module can be achieved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a driving circuit and a lamp. Background technique [0002] With the rapid development of electronic technology in recent years, people always hope to change the voltage value connected to both ends of the load according to the specific load conditions. For example, when the load is a series of multiple lighting LEDs, the voltage provided to the load module It changes with the number of lighting LEDs, but the power supply for power supply is 220V AC, so different voltages cannot be provided according to specific load conditions. When there are many lighting LEDs in series, due to the power of each lighting LED The divided voltage cannot reach the driving voltage of the lighting LED, so the lighting LED will be darker or not bright at all. When there are fewer lighting LEDs in series, the divided voltage of each lighting LED is too large, exceeding the lighting LED The limit ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rapid development of electronic technology, people always hope to change the voltage value connected to both ends of the load according to the specific load conditions. For example, when the load is a series of multiple lighting LEDs, the voltage provided to the load module It changes with the number of lighting LEDs, but the power supply for power supply is 220V AC, so different voltages cannot be provided according to specific load conditions. When there are many lighting LEDs in series, due to the power of each lighting LED The divided voltage cannot reach the driving voltage of the lighting LED, so the lighting LED will be darker or not bright at all. When there are fewer lighting LEDs in series, the divided voltage of each lighting LED is too large, exceeding the lighting LED The limit voltage will burn out the lighting LED, and a power supply voltage specification can only provide the lighting voltage of a fixed number of lighting LEDs

Images