Ar vertas dėmesio toks LED draiverio sprendimas? išeitų labai pigus, platus įtampos pasirinkimas ir daug srovės atlaiko? Visas manualas dominanti schema
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circuit #3 is the best one, if we want to set the G-pin voltage to about 5 volts – use a 4.7 or 5.1 volt zener diode (such as: 1N4732A or 1N4733A) – any lower and Q2 won’t be able to turn all the way on, any higher and it won’t work with most microcontrollers. if your input voltage is below 10V, switch R1 for a 22k-ohm resistor, the zener diode doesn’t work unless there is 10uA going through it.
after this modification, the circuit will handle 60V with the parts listed, and you can find a higher-voltage Q2 easily if needed.
R1: approximately 100k-ohm resistor (such as: Yageo CFR-25JB series)
R3: current set resistor – see below
Q1: small NPN transistor (such as: Fairchild 2N5088BU)
Q2: large N-channel FET (such as: Fairchild FQP50N06L)
LED: power LED (such as: Luxeon 1-watt white star LXHL-MWEC)