| 摘要 |
<p>A method for solving overtemperature of constant current drive chips and an LED lamp strip drive circuit. The method comprises: step 1, providing dual-channel constant current drive chips (30), wherein each constant current drive chip (30) comprises a first input pin (1), a second input pin (3), a first output pin (2), a second output pin (4) and a control pin (5); step 2, providing LED lamp strips (20), resistors (R), a control source (10) and a power supply (40); step 3, connecting one end of one LED lamp strip (20) to the power supply (40), connecting the other end to the first input pin (1), connecting one end of another LED lamp strip (20) to the power supply (40), connecting the other end to the second input pin (3), connecting one end of one resistor (R) to the first output pin (2), connecting the other end to a ground wire, connecting one end of another resistor (R) to the second output pin (4), connecting the other end to the ground wire, and connecting the control source (10) to the control pin (5); step 4, repeating step 3 until a required number of LED lamp strips (20) are connected; and step 5, switching on the control source (10) and the power supply (40) to drive the LED lamp strips (20).</p> |
