3V constant current LED Flasher concept designs

the 2N2222 2N2907 1N4148 1N5817 based White LED (with 3+ V voltage drop) flashers - occasionally utilizing the Red LED-s as zeners

constant current mode up to 2.5Ω - a SUM of the internal resistances for 2x 1.5V batteries

constant current mode up to 2.2Ω
note! : that these are concept design simulations that are not been optimized nor built/tested in real

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