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Calculating Current Limiting Resistor Values for LED Circuits | Nuts & Volts Magazine
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ASK: what do you think of this LED current limiting circuit ? When R2 current/voltage rises high enough, Q2 turns on and Q1 turns off, then R2 current/voltage drops and Q1 turns
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Resistor Calculator
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LED Current Limiter, ideal for model lighting | eBay
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Easy LED Current Limiting Resistor Calculator In 3 Steps
Exercise: LED with current limiter — Intro to Arduino