Hi there
I'd like to light up 8 LED in sequence using transistors such that by varying voltage from Vmin to Vmax, the LED will light up sequently and by varying voltage from Vmax to Vmin, the LED will switch off in the reverse sequence that they were lighting up (First On Last Off).
I have design a circuit using 8 transistors whereby their Bases are used as variable input to switch On and Off transistors accordind to the Voltage applied of course each base hase RB to limit IB and are all connected to a variable PS.
A resistor in serie with the collector to limit a voltage across the LED. the LED is connected between the Emetter and Ground and R in shunt with LED to limit a current flowing through the LED.
I'm struggling to light up 8 LED in sequence; I can only light up 2 LED in sequence.
Please any help will be appreciated.
Nganpet
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Impossible n'est pas Camerounais
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