Dimming LED constant-current driving circuit
A technology of constant current drive and LED lamp group, which is applied in the direction of electric lamp circuit layout, light source, electric light source, etc., and can solve the problems of inability to adjust output power, inconvenience for users, and inability to adjust light intensity.
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[0020] Such as figure 1 Shown is a block diagram of a dimmable LED constant current drive circuit.
[0021] A dimmable LED constant current drive circuit includes a dimming module 102 , a voltage divider module 101 , a sampling module 104 and a constant current drive module 103 .
[0022] The power supply terminal of the dimming module 102 is connected to the output terminal of the voltage divider module 101, the output terminal is connected to the enable terminal of the constant current drive module 103, and the input terminal of the voltage divider module 101 is connected to the input power supply; The power supply terminal of the constant current drive module 103 is connected to the input power supply, the ground terminal is connected to the ground, and the output terminal is connected to the positive pole of the LED lamp group connected in series, and the negative pole of the LED lamp group connected in series is connected to the output terminal of the sampling module 104,...
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