One-button switch control circuit and led lamps
A technology of switch control circuit and LED light source, which is applied in the layout of electric lamp circuit, electric light source, lighting device, etc., can solve the problems of switch shrapnel ignition, switch contact oxidation, and switch function failure, etc.
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[0020] like figure 1 As shown, the single-key switch control circuit of this embodiment is used to control the LED light source to emit light, including a power supply BT1, a switch S1, a capacitor C1, a P-channel MOS transistor Q1, a switch transistor 200, a first voltage dividing resistor R1, a second The voltage dividing resistor R2, the third voltage dividing resistor R3, the current limiting resistor R4 and the LED light source 100; the source of the MOS transistor Q1 is connected to the positive pole of the power supply BT1, the drain of the MOS transistor Q1 is connected to the positive pole of the LED light source 100, and the LED light source 100 Both the negative pole and the negative pole of the power supply BT1 are grounded; the first voltage dividing resistor R1 is connected between the positive pole of the power supply BT1 and the gate of the MOS transistor Q1, and the second divider resistor R1 is connected in series between the control terminal of the switch tub...
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