Undervoltage Protection Circuit for LED Lamp

摘要

An undervoltage protection circuit for LED lamp includes a DC/DC converter, and a controlling circuit module. The controlling circuit module includes a signal collecting unit configured for collecting a signal, a signal comparing unit electrically connected to the signal collecting unit, and a signal processing unit electrically connected to the signal comparing unit. The signal comparing unit is configured for comparing a signal input from the signal collecting unit with a threshold voltage. The signal processing unit is configured for processing the signal output of the signal collecting unit to turn on or turn off the DC/DC converter. Whenever the voltage input is less than the threshold voltage which indicates an undervoltage condition, the controlling circuit module produces a high level and causes the DC/DC converter to not work as a result. Inversely, the controlling circuit module drops to a low level and the DC/DC converter begins to work.

主权项

1. An undervoltage protection circuit for an LED lamp comprising:
a DC/DC converter; a controlling circuit module electrically connected to the DC/DC converter, the controlling circuit module comprising:
a signal collecting unit configured for collecting input signal;a signal comparing unit electrically connected to the signal collecting unit, the signal comparing unit configured for comparing the input signal with a threshold voltage; anda signal processing unit electrically connected to the signal comparing unit, the signal processing unit configured for processing the output signal of the signal comparing unit to turn on or turn off the DC/DC converter.