Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
If you are using the same power supply, and the same current limiting resistor as when driving the LED at 100% duty cycle (always on), then if you reduce the duty cycle to 50% (at any chopping frequency) , the power dissipation in the both the resistor and the LED will be cut by 50/100 = 1/2
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