Patent ID: 8569959
Filing Date: 2013-10-29
Classification: H05B

Abstract:
1. A lamp control circuit connected to a power supply through a control, the lamp control circuit comprising: a first switch circuit to receive a voltage from the power supply when the control is turned on and output a first control signal; a count circuit to receive the first control signal from the first switch circuit and output a second control signal; a gate circuit to receive the second control signal from the count circuit and output a third control signal; a second switch circuit comprising first to third electronic switches, to receive the third control signal from the gate circuit, thereby the first to third electronic switches being turned on or turned of according to the third control signal; and a lighting circuit comprising first to fourth light emitting diode (LED) groups, the first to third LED groups respectively connected to the first to third electronic switches, each LED group comprising at least one LED, wherein turning on or off the first to third electronic switches controls the turning on or off of the corresponding LED groups, wherein when the control is turned on a first time, the first to third electronic switches are turned on, the first to fourth LED groups are lit; when the control is turned off and then turned on a second time, the first and second electronic switches are turned off, and the third electronic switch is turned on, the third and the fourth LED groups are lit, and the first and the second LED groups do not light; when the control is turned off and turned on a third time, the first electronic switch is turned off, the second and third are turned on, the first LED group does not light, and the second to the fourth LED groups are lit; when the control is turned off and turned on a fourth time, the first to third electronic switches are turned off, the first to the third LED groups do not light, the fourth LED group is lit.