Importance

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Abstract

A power supply module is applicable to an LED tube lamp adapted to install on a lamp socket, and having electric shock protection function, the LED tube lamp including a lamp tube; two end caps, each having a first external connection terminal, and each coupled to a respective end of the lamp tube, the first connection terminals of the two end caps for receiving an external signal; and an LED module configured for emitting light. The power supply module includes: a rectifying circuit, coupled to the first external connection terminals of the end caps and the LED module, for rectifying a received signal to produce a rectified signal; a filtering circuit, coupled to the rectifying circuit and the LED module, for filtering the rectified signal to produce a filtered signal; a switch circuit configured to be switched according to a control signal; an electric shock protection controller coupled to the switch circuit, for detecting whether an electric shock risk has occurred, and configured to turn the switch circuit on or off according to the detection result; and impedance devices, which impedance devices and at least one electric component of the electric shock protection controller form a detection path. The electric shock protection controller is configured to cause a current to be conducted in the detection path for generating the detection result.

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First Claim