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.
I need some help with an LED circuit. I have 48 LEDs wired in parallel, each with a voltage drop of 5V, operating at 40 mA, with a 12V supply. Should I use a single 175 OHM resistor for each LED? Should I split the LEDs into 24 pairs, each pair wired in series, using a 50 Ohm resistor? What...
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